DE1548579A1 - Electroluminescent display device - Google Patents

Description

Electroluminescent Display Device The invention relates to one Display device based on the phenomenon of electroluminescence, as well as Circuits for actuating the display device.

In the German patent application B 75 170 IXb / 42d of January 7, 1964 such a display device has already been described in which Luminescent elements excited by all switches dieu-zends photoconductive elements will.

\ Vie in the previous application exist in the present Sign the sur display serving luminescent display segments from a thin Layer of a phosphorescent substance, which is between two electrio conductive Sohichten bofindet. In a solo arrangement, the creation of a variable one acts Voltage to the outer, electrically conductive layers under suitable conditions, because the phosphorescent substance emits light on the other hand, in the early hours Registration practically uses an independent excitation circle for each display segment, through which the display device becomes complex and bulky.

In the present invention, this dependency is avoided by the number of anresungakrelse is no longer proportional to the number of display segments needs to be.

According to the invention acts in the electroluminescent display device as a function of a voltage dan indicating one of the measured values to be set Light emitted by an electroluminescent cell acts on an ala switch Photoconductor connected to an electroluminescent display segment. the Electroluminescent display device belongs to an erate group of electroluminescent, parallel streets in one direction, from a second group of electrolminescent, mutually parallel strips in a second direction, which is essential la runs perpendicular to the first direction, made of photoconductors that serve as switches, are arranged like a matrix at the intersection of the strips of both groups, o that they are each optically coupled with individual strips of a group and either one of the strips can be switched one after the other or in rows, until, in a comparison circle, the voltage indicating the measured value with the total voltage on the excited electroluminescent segments and the measured value is displayed In the arrangement according to the invention are those serving as changeover switches Photoconductors Within a row, parallel to each other and with connected to the last photoliter of the previous row serving as a switch, while the all changeover switches serving photoliter of the first Roche parallel to each other are connected to the power source, so that the last photoconductor within one row serves as an auxiliary voltage source for the photoconductors of the following row, which is connected when the last photoconductor in a row is turned over is.

An advantageous feature of the present invention is that because # each group of electroluminescent strips is a group of electronic Switching elements assigned let to the excitation depending on the measured To control measured value, and that each group of electronic Umecheltern a summing circuit sugeordered let, which is operated at the same time by the changeover switches.

According to a feature of the invention is the number of electronic Changeover switch slightly larger than half of the electroluminescent strips of the associated Groups. According to another feature of the invention causes the excitation of an electroluminescent Htreifen in the first direction the Umechaltune of a single photoconductor and thus the excitation of a single electroluminescent cell (fine display), while the excitation of an electroluminescent strip in the wide direction the switching causes a whole series of photoconductors, and thus a corresponding number is excited by electroluminescent cells. (Grchanzei @ e) According to another characteristic the hearing becomes the measured value and that displayed by summing circle Value compared in a comparison group, as in the German patent application B 83 067 IXd / 21e of July 31, 1965 under the title "Transistorized comparison circle" or in the German patent application B 83 910 IXb / 42s of September 25, 1965 at has been described under the title "Electronic Control System".

Another special feature of the invention is that # the Electroluminescent display elements like the display column of a mercury thermometer are arranged and parallel to each other at one of their outputs via a brightness control are at ground, so that # the brightness ta dependency Yen of the lighting @ strength can be changed in the environment.

The present invention is characterized in that it is a optional arrangement ait Sohaltkreleen for the Photoelter wt circuits for the electroluminescent cells, as well as storage elements for the "fine display" and the "coarse display" used in the excitation of the electroluminescent display where the holding elements of the "coarse display" a holding position for an axis of the arrangement bowirkeng while the Sohalteloaente for the "fine display" on the other @ Aoho der Take effect and close the luminescent display elements again allow when the input signal changes.

Display deviations, which are due to changes in the charge carrierdiohtev don the bias signal, the bias voltage, the voltage drop the diodes, the supply voltage and due to maintenance are reduced. The switching trip, the voltage and the current for operating the display device have been reduced and the excitation circles simplified.

The branching device does not require any precise, strong control signals and no costly jus. The display is inertia, thereby avoiding instability. No moving parts are used.

Further features of the invention are taken from the description in conjunction with the accompanying drawings.

In the drawings: FIG. 1 is a block diagram of the invention Electroluminescent display device with electroluminescent cells and photoconductors; 2 shows a symbolic representation of the electroluminescent cells and the photoconductors with the "coarse display", "fine display" and the "section display"; 3 an enlarged one schematic partial view of the electroluminescent cells and the photololt r of Fig. 2 in connection with the A eaentg to be excited Fig. 4 details of the control for luminance; 5 shows a partial circuit diagram and a blook diagram a toilet of Fig. 1; 6 and 7 are circuit diagrams associated with the circuits to FIG. 5; 8 shows the electroluminescent part of the display device ; Fig. 9 shows the photoconductive end of the display device; 10 is an enlarged detail of the photoconductive section of FIG. 9, which corresponds to the corresponding electroluminescent Portion of Figure 8 is superimposed; 11 shows another embodiment of the display device, the one rig. 8 corresponding electroluminescent section shows that with A phto-conductive section corresponding to Fig. 9 and with the circles of the Pia. 5 and 7 connected, including the electroluminescent display elements for lighting to stimulate.

In the following, electroluminescence is briefly referred to as @L bezei @@@ t.

The display device according to the invention consists of a display area and excitation circuitry using a new optronic arrangement. The signal transmitter or display device is intended to be a variable direct current signal hand over. This signal can e.g. correspond to a gas temperature or a synchronization signal be that the flow rate a liquid or the speed of rotation of a tachometer. The output signal causes the excitation of electroluminescent segments, which are arranged in such a way that they look like a thermometer through lighting show the sinal of variable length.

In Fig. 1, display device 210 provides a variable DC signal, which corresponds to the value to be measured, via the arrow 211 to the comparator 2156, the causes an electronic w. According to FIG. 5, a control circuit 218 has a control circuit 219, which receives the error signal 215 anssinua from the comparator 216. The steering committee 219 controls & on control loop 218, the control commands represented by 217 in FIG are sent to a control circuit 221.

The one shown in FIGS. 6 and 7 and dependent on this control command Control circuit 221 sends rule * Rle shown by 223 in FIG. 1 to an electroluminescent cell arrangement 220. A summing circuit 222 receives control unit 22S from control circuit 221 and issues control commands 227 to the comparator 216 from, di <the circuit of the electroluminescent cell arrangement 220 correspond.

Dl Gloichetrom-Rogelopension works in comparator 216 against the signal voltage supplied by display device 210, so that when both signals are equal or if the rule separation is equal to zero, one of the variables to be measured Display is carried out.

The # 3 according to the invention, simultaneous switching of several Segments the display device requires three controls: a fine display and a coarse display. The third steaer rank is brought about by the photo-conductor switch 224, which is via 229 receive the light emitted from the EL cell array 220.

The display area has the shape of a column and consists of Re of EL segments 226 (Fig. 1) driven by photoconductor switches 224 through 230 be stimulated.

The display segments are indicated symbolically in FIG. 2 and shown schematically in part of FIGS. 3, 4, 9, 10 and 11. You are from the Art shown in German patent application B 75 170 IXb / 42d.

The display segments 226 are via a brightness regulator 228 sur Controlling the luminance of the excited segments connected to ground 248, so that # achieves good visibility regardless of the ambient illuminance will.

In the symbolic representation of FIG. 2 and in FIGS.

3, 8, 9, 10 and 11 is the EL cell array 220 optiach the Photoconductor switches 224 connected and forms zinc assembly (die) 234 of EL cells and thoto conductors.

The arrangement contains: two hundred and nine photoconductors acting as changeover switches, denoted by reference characters BC1 to Bd209 are bosse4; a "rough display" control 236, consisting of nineteen, horizontal EL strips c1 to C19 in the direction of the X-Achoe Beatehtt a "fine display" 238 sue nominally vertical, EL strips F1 to F10 in Riohtang the Y-axis, where the reference symbol F11 is the last "fine display" Figure 13 illustrates a "section" controller 240 comprised of nineteen photoconductor switches S1 to S19, the light falling on the capacitive, EL strips for the "rough display" C1 tin 019 conductive wwrdwn. In Fig. 2, two hundred and nine rectangles 224 symbolically represent the two-hundredth and nine photoconductor switches, which are used for excitation or switching serve for the two hundred and nine EL display @@ elements 226, and with the reference numerals EL1 to EL209 are designated.

Each photoconductor switch brings an associated EL segment so that # there is a mutual relationship.

In Fig. 2 w symbolically in 226 thirty-six EL segments through thirty-six i g Photoconductor switch activated.

In Fig. 3, EI segments 226 then become the pheto conductor switches 224 excited via six controllable silicon rectifier switches 461A to 461F, which the ten zenkreschten EL strips for the fine display F1 to F1 (fine display 238) taxes. The nineteen horizontal EL strips C1 to C19 are controlled by ten Silicon rectifier changeover switches 761A to 761J (coarse display 226) gwateuwrt.

Polglioh are in the arrangement (matrix) 234 of EL elements and Photoconductors two hundred and nine photoconductor switches PC1 through PC209 through the EL strips F1 to F10 and 01 to C10 are illuminated, which in turn are illuminated by the controllable Silicon rectifier switch 461A to 461F and 761A to 761J are excited. In this way the time to rearrange all photoconductor umao holders is the same the time for the reorganization of a single niementea.

Figures 6 and 7 illustrate the circuitry used to excite the z vertical EL strips F1 to F10 (Feinanseige ) and the new look horizontal EL strips C1 to C19 (rough display) require cordon. The third control is via the photoconductor switch for the "section display" Hl to a9 of the device 240, the photoconductor switch being one of the photoconductors at the end of a Strip such as PC11, PC22, PC33 ... PC198 in each horizontal strip C1 to C18 with the exception of the last horizontal stripe C19, and themselves the last photoconductor PC198 is in the penultimate strip C18.

The last photoconductor PC209 is used when more alo there are two hundred and nine EL display elements.

According to the invention, the photoconductors S1 to S18 control the cutoff display 240, depending on the photoconductors, the excitation in the horizontal range. To the For example, the photoconductor PC11 (Fig. 3) serves as a force switch in the waiting position for the second row of photoconductors PC12 to PC22. Photoconductor P011 is over the line 242-250 with its connection to a suitable AC voltage source 243 3, the other terminal of which is connected to ground 245 via line 244 is. Photoconductor PC11 is connected to line 246 with the EL display segment EL11 in connection, then in turn via a collecting line 248 with ground 245 connected is. The photoconductors PC1 to PC111 together on the line 250. If the BL strip 01 is excited and throws light onto the photoconductors P01 to PC11 1, these become low-resistance conductive, and the voltage of the voltage source 243 becomes above the photoconductor PC11 and line 252 applied to photoconductors PC12 to PC22. When the EL strips for the fine display F1 to F10 or the EL strip for the "Rough display" C2 emitting light, the photoconductors P012 to Ph22 become conductive, creating voltage is transmitted to the EL segments EL12 to EL22 and which emit light. If so the photoconductor PC11 is switched and via the line 246 the eleventh EL segment EL11 is excited to shine, the next horizontal row becomes at the same time energized by photoletiters PC12 to PC22 via line 252. Of the Photoconductor PC22 is connected to the voltage source via line 252 with photoconductor PC11 243 in connection to illuminate the EL display element EL22 via the line 254 to stimulate. At the same time, the photoconductor PC22 sets the immediately permanent one Series of horizontal photoconductors PC23 to PC33 under voltage.

The photoconductor PC33 illuminates and etches the ETrElement EL33 following row of horizontal photoconductors Pic34 to Pua44 under tension. Dos continues for a long time, am the photoconductor P0198 is switched on and the last row of photoconductors PC199 to PC209 energized and the segment EL198 su stimulates luminaires.

In this way, the display device according to the invention can with only sixteen controllable silicon rectifier converters see vertical EL strips (Fine display) and nine horizontal EL strips (rough display), as well as two hundred and nine Stimulate the EL display segments to search.

The display column 226 (Fig. 3) consists of a large number of small, horizontal begments of a phosphorescent substance, their number through the display accuracy, the display sensitivity and the resolution to be determined.

In Fig. 4, the brightness regulator includes 228 for controlling the luminance a potentiometer 255 for the = drieg the luminance of the luminescent display segments 226, which is dimensioned in such a way that it works perfectly in all light conditions can be read. The brightness control for the display device according to the invention fulfilled due to the electronic ben for the excitation of the EL display segments The circuits do two jobs: first, illuminate the display segments 226; Secondly the general dial illumination for readings.

The brightness regulator with the control circuit of FIG. 4 contains four rectifier diodes in bridge circuit 256 which connects the s 248 of FIG. 3 between the display elements 226 and ground 245 is on. Measure the potentiometer 255 solder so that # the dial illumination and the display segments have the same brightness, if the device is used when it is cold. The brightness of the EL display segments is set to a medium illuminance, see e.g. eaf about 500 lux Brightness knm can be changed precisely and depends on the number of excited EL segments independent.

The diode 258 is at its anode 259 but the line 273, which is on its side with which line 248 is connected to 245, connected to ground /. Your cathode 260 is connected to the point 261. A second diode 262 has its anode 263 connected to the point 264, which is associated with the collection 2 @ of the display segments 226 in Connection.

Your cathode 265 is pre-tied to point 261, Rine third diode 266 is on its anode 267 with the point 268 and on its cathode 269 with the point 264 connected. A fourth diode 270 is at its anode 271 at point 268 and connected to point 273 at its cathode 272. This is how the diode bridge lies 256 to the ground and to the display segments 226 between the two connection points 264 and 273 in series. It lies between the two bridge points 261 and 268, however lines 274 and 275, respectively, at an opposite direct current voltage source Polarity 257. The line 275 leads to the negative terminal 276 of a direct current voltage source 280 and at its endpoint 283 a resistor 282. The line 274 is through a movable gripper 284 connected to the Wideratand 282, which is on its other End 286 is connected to the pou n terminal 288 of the voltage source 280. To this The luminance of the display segments can be changed using the 255 potentiometer will.

The display device 226 includes in the illustrated embodiment about forty-four segments to a length of 25 mm. The en and the e photoconductors are z. B. on four disks, as can be seen in FIGS is. These discs are put together and joined together as if they were would consist of a single unit, as FIG. 11 shows. This will not only simplifies the assembly of the EL elements and the photoconductor, but also The search for errors is made easier by limiting it to individual slices. in the With regard to operational safety, there is a growing bye sis to a simple one Assembly on EL cells and photoconductors To explain the mode of operation of the in FIGS. 1 to 4 shown display device is assumed da # from display device 226 thirteen display segments by eX input signal should be excited. The one emanating from the voltage source for the excitation 243 Current arrives at the first photoconductor PC1, and there it is already through the EL strip C1 and / or the EL strip F1 is illuminated and is thus surrounded, goes the current through photoconductor Po1, line 290 and the EL display segment EL1 to the crowd. The display segment EL1 is thus excited to light up. The one from the Voltage source 243 coming current goes from photoconductor to photoconductor via the Photoconductor PO1 to PC10 and the associated display segments, so that # the luminescent Display segments EL1 to EL10 are excited to light up. Then the current goes over the photoconductor PC11, which is already illuminated by the EL pressure display C1 is switched to photoconductor PC11, which in turn has a current in the line 246 allowed where the EL11 segment is excited to shine. The Htrom goes also through the line 252 su the photoconductors PC12 to PC22, which are already through strips F1 to F10 are illuminated and ready to switch. Since the first two stripes for the "Feinanseige't and F2 are illuminated, and there the fie stripe 02 for the "coarse display" and the third stripe F3 for the "fine display" not are illuminated (ea eoll Yes the S 1 13 are displayed), only the first two photoconductors of the second rowPC12 and FC13 excited to the display segment EIP and to stimulate EL13 to light up.

The EL strip C1 for the "coarse display" causes a stop position For the lighting of the segments iL1 to EL11, the as a power switch in Photoconductor PC11 serving waiting position permitted according to the section display S1, that the HL strips for the fine display F1 and F2 are stimulated to perforate, whereby a "fine display", reminiscent of the reading of a vernier, is created through which the following two display signals ELt2 and L-IL13 are excited to glow, so that # a total of thirteen display segments are illuminated.

The brightness regulator of FIG. 4 represents the use according to the invention aine rectifier for regulating the brightness of luminescent display segments 226. The rectifier bridge 256 z is blocked until the from the voltage source 243 outgoing alternating voltage is greater than that of the direct voltage source 257 outgoing, oppositely directed Vorapannang.

The EL display segments EL1 to EL209 behave essentially like capacitors, so that # when a DC voltage is applied to a luminescent segment no illumination is caused. If at the same time the size of the AC voltage applied to luminescent cells is changed, changes auah the size of your light radiation. But since the EL display segments 226 with the Gleiohrichterbrticke 256 are in series, a botstlgug of the potentiometer 255 becomes the size the oppositely directed DC voltage and thus the one lying on the segments Alternating voltage changes so that its luminance increases or decreases. From the description it can be seen that # the brightness control for display segments 226 is only an auxiliary circuit shown by don in FIGS. 5, 6 and 7 Haapt circuits is independent.

In FIG. 5 ic the display device 210 serving as an input signal generator a thermocouple variable with a single transistor 316. The thermocouple 210 is in Saria with sinon resistor 311, whereby from the connecting panka 313 one Connection 314 leads to the preamplifier phase discriminator 219. The emitter 315 of the switching transistor PNP316 is connected to the connection point 313. The base 318 de transistor is in series with a limiting resistor 320, a rectifier diode 322 to the secondary winding of a transformer 325, through which 324 is used as a reference voltage Serving alternating voltage / of about 10 V in the circuit is transmitted. The diode 322 is connected in such a way that # mie blocks the positive half-waves to nar the negative Half-waves of the reference voltage 324 sur Basin 318 passes, so that the transistor 316 can work as a Sohaltar. The collector 328 of the transistor is with the connection point 333, which in turn is connected to the other end of the secondary winding of the transformer 325 varbandan is. Connection 333 is aaSardam through a capacitor 331 and a Laitang 334 is connected to the summing circuit shown in dan Fig. 6 and 7, the the ascite span liafart, which is compared with the instantaneous tension present at point 313 shall be. This second voltage is a control voltage, corresponds to the number the baleaohtetan segments and comes from the summing circle, w on in Fig. 1 by the arrow 227 is indicated.

The thermocouple 210 the capacitor tor and the preamplifier 219 (Fig. 5) aine over the guide rails 336 b. 337 and 338 connected to ground 245.

The mode of action of this comparison circle is described in the already mentioned German patent application B 83 067 IXd / 21o. It should be brief here, however how transistor 316 acts on the DC voltage sub-achiod will be discussed at its lead electrodes 313 and 333, this voltage difference is sprayed into an output signal converts that runs in one direction when the voltage on the electrode 313 is greater is, and that runs in the opposite direction when the voltage on the electrode 333 is greater, and its frequency is equal to the frequency of the reference voltage 324.

If the voltage at point 313 increases, which corresponds to an increase in the dated Thermocouple 210 O corresponds to the temperature displayed, appears with the phase reference voltage 324 provides a pulsating DC signal on the output line 314

If, on the other hand, the temperature displayed by the Uhermoelemen1 drops, the voltage at point 313 decreases in relation to that at point 333 The voltage applied to the summing circuit 222, and appears on the output line 314 a pulsating direct current signal, the phase of which is that of the reference voltage AC voltage 324 is opposite, and passes via line 314 to the preamplifier and phase discriminator 219, which is at the input of the control loops 218.

This preamplifier and phase discriminator 219 let by same Type, wto or ber in the aforementioned second German patent application B 63 910 IXb / 42d is to be described. It includes a base type NPN transistor Q1 13, which are connected to the output line 314 via a Coupling length capacitor C1 is in connection, while the emitter 15 via a resistor R1 with the Ground 245 and consequently also with the other output line 336 of the Vergletoh rs 216 connected int. The emitter 15 is connected to a point 17 via a resistor R2 connected to the Bamis, while the collector 18 via the resistor R3 with the ...- the same Point 17 and to the positive terminal of a DC voltage source 12 via the resistor 380 connected t The emitter 15 and the collector 18 are the lines 339 or 340 connected to an alternating voltage supply circuit F, which is used as a reference voltage serves, has a frequency f and contains the voltage source 324. Lines 339 and 340 are the DC blocking capacitors 345 and 347 with the control electrodes 342 and 346 of silicon controllable rectifiers 344 and 348 are connected. The silicon rectifiers 344 and 348, with their anodes 352 and 366, lie parallel to the BezagakreieF, which is formed by the AC voltage serving as a reference voltage is fed. The control electrodes 342 and 346 are across resistors 350 and 374, respectively, and the common line 341 to the mass 245.

The Besug F contains a rectifier diode 355, the silicon rectifier 344 and 348 and the Bezagaspannangaquelle 324, which via a transformer-transformer 362 and a line 363 supplies an alternating voltage of frequency f. This alternating voltage is converted into positive pulses of the frequency f by the anti-friction diode 355, those to the anodes 352 and 366 of the controllable silicon rectifiers 344 and 348 reach. The cathodes 356 and 370 of these two silicon wristbands are Uber Resistances 358 and 372 are connected to the ground 341.

Diva to the phase discriminator 219 applied DC voltage pulses are in phase with the voltage of the reference voltage source 324 when the the value displayed by the display device 210 0 increases in relation to the preload.

Uwolrehrt, on the other hand, when the value of the measured quantity decreasesg * rhal-ton the DC voltage pulses at the input d * n or 219 opposite phase in bosug to the phase of reference voltage 324.

In control circuit 218, the values of the resistors R1 ana 380 are selected so that da # signals of the same amplitude, but opposite phase, at points 19 and 21 ontsteh n.

The signal at point 19 has the opposite phase su don au for so long pulsating signals coming to comparator 216 than that appearing at point 21 Signal is in phase with the signal coming from the comparator 216. The teuabar Siliciumgletichrochter 348 switches through and gives a positive pulse in don Widaratand 372 abot long dia @ voltage at point 19 and the reference voltage in smooth Phase, i.e. as long as the display device 210 is in a growing single signal. The expensive silicon earring 344 achaltot through and bow works a poaitivan L pulse in resistor 358, when the voltage at point 21 and the reference voltage 324 boiled in phase with each other, i.e. when the display unit 210 indicates a decrease in the gamaaaanen Displays values.

An alternating voltage Umachaltkreis G contains a Umsohalt- Voltage source 223 of conventional type connected to diode 355 and soldered to its output terminals 402 and 403 AC voltage s-impuse with a frequency that is half that Frequent opposite the AC voltage source 324 and has switching transistors 400 and 401 You type NPH either opens or closes.

When the switching transistors 400 and 401 either open ader g ** ohlo mind, the Regeksoabbybgebm web der stebaren going out from Besugajeus F can Silicon rectifier 344 is open, either in line A or in line B appear, which depends on which of the two transistors is open and when a control pulse for the circuits of FIGS. 6 and 7 erscdint To dismen Zwook lot The cathode 356 discrete silicon rectifier 344 with the collectors 410 and 412 of transistors 400 and 401 are connected. The baza 414 and 415 of the transistors 400 and 401 are connected to the voltage source, which is only half the frequency Has. The output lines A or B are connected to the emitters of the transistor 400 or 401 connected.

The Xmthedt 370 of the attwwrbarwa silicon rectifier 348 lies above a line 420 to oinoa, Lösohkreis H. Der Löschkreis. H contains «Traneiwtoron 422 wzd 424 of the type NPN N and a delay circuit consisting of a resistor 426 and a capacitor 428. The collectors 436 and 437 of the transistors 422 b. 424 wind each with a supply line of the extinguishing circuit C and D vwrbaadwn.

The pulses coming from the controllable silicon rectifier 348 arrive one through resistor 426 to basin 430 of transistor 424 and to the capacitor 428, on the other hand via the resistor 432 on the base 434 of the transistor 422. In Depending on the signal received from comparator 216 wsrdta the buzzer circles, which are shown in FIGS. 6 and 7, solved by using the bitter 438 and 439 of the transistors 422 b * 424 current pulses are emitted. As the emitter electrodes 438 and 439 are connected to the wet 245 via the line 341, the current in the conductive State of the transistors flow to ground.

The pulses passed by rectifier 344 appear in the Line A or in line Bw which depends on whether the transistor 400 or the Transistor 401 is conductive at the given instant. When a pulse train is delivered appears, the lump impulses of a direction in or line A and the impulses of the other direction in line B or vice versa, depending on which phase relationship Between the pulse train and the switching frequency of the transistors 400 and 401 exists.

This process lasts as long as the signal arriving at point 313 increases, i.e. that the temperature indicated by the thermocouple 210 increases. if the displayed signal begins and reverses the phase of transistor 316 output signal, which makes the controllable silicon watch strap 348 conductive will. It passes a positive pulse through resistor 372 and switches the Quenching rectifiers 422 and 424 um. The current continues to arrive in the fora of pulses to the transistors 422 and 424, even if a single control pulse the "fine display" of FIG. 6 can be deleted when he is through the line 0, the transistor 422 got to stasis 245. The current pulses through the delay circuit with the Resistor 426 on capacitor 428 charge base 430 to transistor 424, close this and allow the "coarse display" of FIG. 7 to be displayed via the line D, transistor 424 on ground 245.

According to the invention, the storage circuits and the summing circuits are thus made 6 and 7 deleted by the fact that the controllable silicon rectifier 348 It is short-circuited via transistors 422 and 424 if that is at the connection 313 of the transistor 316, the current signal decreases, d. H. if that from the thermocouple 210 displayed temperature decreases.

In the circuit shown in Fig. 6, a memory for the "fine displayed" FM and a summing circuit for the "fine display" FS included, with the memory circuit For the "fine display" FM via the input lines A and B and via the adjacent one The line to the extinguishing circuit C is connected to the control column of FIG. 5. As already mentioned, the input lines A and B are obtained with an increase in the input signal alternating control pulses, while the input lines when the input signal is picked up 0 and D piercing pulses received. The impulses coming in via registers A and B. last until the West Sea stops growing. The summ this Information obtained is indefinitely from the controllable silicon sliding rectifiers saved.

Lines A and B coming from control loop 218 of FIG. 5 are obtained deviating control pulses to the controllable silicon rectifier 461A to 461F of the control circuit 221 of FIGS. 6 and 7 conducting wesdz su laaaen. The rectifiers 461A blé 461F remain open due to their natural inertia, even if the Switching impulses have disappeared.

Fig. 6 contains a certain number of circuits, of don each has the same number and type of electronic components and which are therefore represented by the same reference numerals to which the Buohataben A bit F are appended to distinguish the six circuits from one another. Only the major constituent parts are given reference numerals, each Component that contains more than one electronic switching element with the same Beaugaaahl is indicated, whereby aioh, however, the attached Buchschtabben from each other differentiate.

In Fig. 6 the summing circuit for the fine adjustment contains FS essentially six Transiertor 451A to 451F of the type NPN and associated, controllable silicon lighters 461A to 461F, which are connected to ground 245 via a line G, the controllable one Silicon equator 461A is connected to its cathode 464A via a blocking resistor 466 with the line G and on its control electrode 478A but r a discharge resistor 468A connected to line G.

Lead A is via lead 470A to the anode of a diode 474A, whose cathode is connected to the control electrode 478A is located. This control electrode 478A is a line 480A at the anode of a diode 484A, the cathode of which is connected to the extinguishing line C. The diode 474A let so connected because they have positive control pulses that are sent via line A to the control electrode 578A coming from the circuitry shown in Fig. 5 is passed. The diode 484A is connected to the extinguishing line C in such a way that the negative control pulses to the control electrode 478A durant when this from transistor 422 of FIG. 5 via line C to ground 245 arrive. The second silicon controllable rectifier 461B is un de manner connected to lines B and C, like the first rectifier with the lines A and C are connected. Its active stomach corresponds to that of the first rectifier, Of course, in particular on his leads Hnd via the diodes 474B and 484B.

The silicon controllable rectifiers 461C and 461E are the same Circuit like the rectifier 461A, w the controllable silicon rectifier 461D and 461F have the same circuits as rectifier 461B. A transistor 490 of type NPN is with its Basins 492 but a resistor 494 with a point 563 A is connected to the anode of a zener diode 558E and the anode of a diode 566B. The emitter 498 of the transistor 490 let connected to the Maeaeleitang G while a collector 500 with point 501 and the cathodes of the two diodes 506 and 508 is connected, the Andes of which via the diode 506 to the input line a and are connected to t of input line B via diode 508. In the supply line A. yin resistor 514 lies between diode 506 and the diode ) iode 474E, and in line B there is a resistor 516 between diode 508 and diode 474F.

The silicon rectifiers 461A through 461F are six lines 521A to 521F and four lines 522A to 522D are connected to the display device. Each line is connected to one of the EL strips for the fine display F1 to F10, i.e. because # the line 521 is connected to the EL strip for the fine display F1, as shown in Fig. 8, and that line 522A is connected to the "fine display" EL strip F7 is connected, lines 521A and 522A lead to a point 524A, at which also the anode 525A of the silicon rectifier 461A and the cathode of the diode 52NA lie, deMnAnedz is connected to dom point 532A, at which the cathode of a diode 536A lient. The anode of diode 540A is at point 533A on line 521A, while Your cathode is on line 524, ai source 544 and the transformer transformer 546 zpaizt.

The anode of the diode 536A o over a resistor 550A over the line 554 and the DC voltage source 552.

The anode of the diode 536A is connected to the cathode of the Zenardiede 558A. The cathode 464B of the silicon controllable rectifier 461B of the second circuit is connected to the cathode of a diode 566A, whose anode is connected to the anode of the Zener diode 558A is connected at a point 562A, at which also the base 570A ointes transistor 451A of type NPF is connected through a resistor 574A. In the circuit of the silicon rectifier 461A tailt the over the line 554 from the voltage source 552 bide fi is applied to the resistor 550A, to the zenard diode 558A and the blocking resistor 466B of the controllable silicon track rectifier 461B. the Voltage on line 554 is added to circuitry in the controllable silicon gauges 461B and is connected to resistor 550B, to Xwnerdiode 5581} and to blocking resistor 466C the third controllable silicon rectifier 461C. The one from the source of the same tension 552 outgoing voltage is in the circuits of the third, the fourth, the fifth silicon controllable rectifier 461C to 461E shared in the same way, as is the case for the circuits of the first and don ominous silicon rectifier 461A or

461B. This is how the tension comes from the DC voltage source 552 into the circuit of the last silicon rectifier 461F, namely at a point between the last resistor 550F, the last Zener diode 558F and the last resistor 608.

W the controllable Silisum rectifiers are blocked, voltage is applied to the cathode of the silicon rectifier near the passage through the zener diode in the opposite direction. This prevents # a control pulse from being sent to the Control electrodes can reach, which would otherwise result in an uncontrolled outflow of electrons via the silicon rectifier.

The Xranaiattor is in the summing circuit for the "fine display" FS of FIG 451A connected at its emitter 580A to the first derivative 582 while being Collector 584A over resistor 586A connected to line 588 1tu the to the DC voltage source 590 watt. The end of resistor 586A that connected to collector 584A of transistor 451A is also connected to the Anode of the diode 59u, the cathode of which is connected to a second derivative 598, which is connected to dam one end 900 of a summing resistor 902 shown in FIG. 7 fart.

The transistors 451B to 451F are the same as the transistor 451A connected to lines 582, 588 and 598. Between the zener diode 558B and the diode 560 is at point 562B a line 572B, which in turn has a Resistor 574B connected to basin 570B dos transistor 451B is the diodes 594A to 594 are selected in such a way that they switch off when there is a voltage drop of 0.5 V. Conduct the anode and cathode and connect the corresponding resistor 586A to 586F to the Connect the second Leitong der Ableitang 598 to the Ene 900 of the summing resistor 902 leads. So when transistors 45tA to 451F are conductive, the resistors are 586A to 586F connect directly to derivation 582 so that the spamming waste is over the corresponding diode 594A to 594F is not very well enough. W but one of the transistors is open, d. H. blocks the passage of current, the potential at the corresponding Diode 594 correspondingly large, nm the corresponding resistor 586 across the diode 594 to be connected to the second derivation if there is a voltage drop in the solar resistor 902 and the control voltage at terminal 333 of the comparator @ 216 to increase.

In the circuit of the last controllable silicon rectifier 461F is located between the cathode 464F of the rectifier and the ground line G a capacitor 600 # This capacitor is used to derive interfering Low voltage pulses from resistor 466F. It is also evident that the Point 572, which leads to the base of transistor 451E via resistor 574, does not connected to the common terminal of the anode of the zener diode 558E and the diode 566E is, but to the common terminal 562E of the cathode of the diode 56w and the Cathode 464F of controllable silicon rectifier 461F. This modified connection # however, line 572 does not change the behavior of transistor 451E with respect to one another to the associated silicon rectifier 461E. The ones about this silicon rectifier 461F zener diode 558F solder through resistor 608 across terminal # 563 connected to the base of transistor 490. She is also about a resistance 574F is connected to the basin 570F of transistor 451F.

The line 582 is via the connection 614 with the multiple winding 612 found. This point is also the connection of the winding 620 for the fine display with winding 642 for the rough display. The winding 620 for the “Fine display” is due to its multiple connections via a common line 623 at the outer ends of the El-6 strips F6 to F10 for the poin display in Fig. 6. The second connection 626 is on the one hand via a diode 638 with the inclu0 614 connected, with the anode of the diode on Connection # 614 is located, on the other hand connected to a diode 630, the cathode of which is connected to line 542, and that in turn at point 634 on line 521F and resistor 635 which was on line 521F between terminal 634 and the diode 528F is located.

The Wioklung 642 for the "coarse display" contains a multiple connection # 644, which goes to the other outer ends of the EL strips C11 to C19 for the "rough display" leads via a common line 645. The second terminal # 648 of winding 642 is on the one hand v en with the diode 654, whose anode is at connection # 614, on the other hand soita with the diode 658, the cathode of which is connected to the line 662, to the summing circuit for the "coarse display" in FIG. Those associated with windings 620 and 640 Circuits actually represent multiple windings.

A connection 663 of the AC voltage source 544 is via a line 665 is connected to connection # 614, while the second connection # 667 is connected to the other outer ends of the EL strips PI to F5 for the "fine display" and with don outer ends of the EL strips C1 to C10 for the "rough display" via a line 669 is connected to FIG. 8.

The circuits of FIGS. 6 and 7 also have common lines A, B, D and G still have common strobe supply lines 5 @, 662, 671 and the arrester 598 on.

As FIG. 7 shows, the summing circle for the "coarse display " CS ten transistors 751A to 751J, and the memory circuit for the "rough display" CM contains ten controllable silicon converters 761A and 761J. These holding elements are interconnected by ten circuits, all of which are as in the case of Fig. 6 contain the same switching elements.

For example, the one with the eraten contains controllable silicon rectifier 761A A connected circuit s lines 721A and 722A, which are connected to a connection point 724A are connected to the anode of the rectifier. On the other hand, these lines lead to the second, outer ends of the first luminescent strip C1 for the "rough display" or on the eleventh strip C11 for the "coarse display" to Fig. 6. Dis cathode des Gleiohrichtera 761 is connected to the common ground line G via a bell resistor 766A.

The rectifier control electrode 778A is from the junction point 756A connect via a bleeder resistor 768A to the ground line G, and on the other hand Via a diode 774A with a line for the control voltage and finally from a connection point 775A via a diode 784A to the line for the quenching circuit D tord. The diode 774A has its anode on the line A, and the diode 784A its cathode is connected to line D.

The line 721A is connected to the line 662A via a diode 840A, which leads to winding 642A for the "fine display" of the multifunctional winding in FIG. 6, the cathode of the diode 840A being connected to the ter 662. The cathode of a diode 836A is on and connects line 721A UBB) a resistor 850A with the line 671, which leads to the direct voltage source 552 of FIG. A diode is used on line 721A between point 832A and diode 836A 830A, with connection # 724A of lines 721A and 722A to the cathode of the diode 830A, the anode of which is connected to rectifier 761A. The cathode of a zener diode 858A is connected to resistor 850A and to the anode of a diode 836A, while its anode at the anode of a diode 866A, which in turn connects to its cathode with the cathode the next controllable silicon rectifier 761B is on. The anode of the Zenerdioöe 858A A and the diode 866A are connected to AnechluB 862A, of which one line 872A leads through a resistor 874A to the base 870A of the transistor 751A. Exceptionally leads the line 872A from connection point 862A via a resistor 834 sur basin 792 another transistor 790, with a capacitor 835 and another Resistor 836 parallel to each other between the base 792 of the transistor 790 and the ground line? lie. The cathode of the diode 866A and the cathode of the second controllable silicon rectifier 761B are applied via a blocking resistor 766B the ground line G.

All controllable silicon rectifiers 761A to 761J of the storage circuit for the "rough display", with the exception of the last rectifier 761J, the same Circuit open, with this last rectifier acting as a switch for the next Relhe serves. The control electrode 778J of the controllable silicon rectifier 761J is connected to control line B via a diode 774J, the anode of the diode being connected to the Line B is located. The control electrode 778J is also included to the Collector of transistor 790 of type NPN connected, the emitter of which is connected to the quenching line D is connected. When the gearshift is in the rest position, the series resistor is used 834 and terminal # 862A apply a positive / voltage to the base of transistor 790 created. This places transistor 790 between its collector and its emitter conductive and connects the control electrode 778J with the Loaohleitung D.

The circuitry of the controllable silicon slide earthing device 761J contains the diodes 830J and 836J. The anode of the 836J diode is on the one hand with the resistor 850J and others with the L3aohkondenaator854, the second plate on the emitter of transistor 790, as well as connected to the cathode of Zener diode 858J. The anode of the Zener diode 85S iat a resistor 874J with the Basins do * last Transistor 751J connected. The anode of the diode 830 is in series with a resistor 835 in the line 721J, the suber the line 662 with the diode 658 in Fig. 6 and About one of the capacitively acting EL strips C10 of the “rough display” in FIG. 8 tied together. The quenching capacitor 854 is connected to the quenching line D in connection.

In contrast, the connection points 862B to 862I are also connection 862A not connected to the base of transistor 790.

In the same way pie in Fig. 6, a first Ableifer 582 is on his one end is connected to the ground 245 and is parallel to the emitters 880A bis 880J of transistors 751A to 751J * Rin second arrester 598 is parallel to the Collectors 884A to 864J of the transistors across the diodes 894A to 894J, i.e. H. because # these diodes with their cathodes on this second lead 598 lie. this second derivative is at one end 900 of the summation resistance 902, the other end of which is connected to ground. The power supply 589 but the resistors 886A to 866J are connected to the collectors 884A to 864J of the transistors 751A to 751J and connected to the anodes of the diodes 894A to 894J Der. Circuit for the "coarse display" of FIG. 7 acts in the way that # the through h the display device The signal pulses caused in FIG. 5 are alternately transmitted from lines A and B. and gradually through the renewable silicon rectifiers 761A to 761J reach. In addition, the DC voltage coming from the voltage source 552 goes through the line 671 and is due to the various resistors and Zener diodes, as is also the case in the circuit of FIG. If at each of the connection points 862A through 862I and at the lead 872J leading to the sur bats of transistor 751J The translators 751A to 751J are charged, so that the voltages coming from the voltage source 590 via the line 589 can reach ground via the transistors and the first arrester 582. presumably from resistor 766B connected to rectifier 761B, a DC voltage signal is present at all blocking resistors, occurs at the cathodes of the corresponding, controllable silicon rectifier an oppositely directed DC voltage. This oppositely directed preload prevents the rectifier from switching through, when he is at his control electrode receives a positive impulse. The controllable silicon rectifiers can only pass through if they oppositely directed bias from their cathodes disappears. That means, da3 only the first rectifier 761A is switched through, even if a control pulse appears simultaneously on all control electrodes via the connected supply line A, until a positive control pulse of the same amplitude, but opposite Direction through the control loop of Fig. 5 But the itmg A is applied. if z. For example, if the control circuit of FIG. 5 emits a control pulse via line B, this is the The controllable silicon rectifier 761B connected to the line B has not yet been switched through, there is a coming from the voltage source 552 at the cathode of the rectifier 761B oppositely directed bias. But this bias becomes the line 671, resistor 850A and Zener diode 858A A. However, if over the Line A is supplied with a positive pulse, becomes the controllable silicon rectifier 761A turned on as if there were no oppositely directed bias on the cathode If the rectifier is connected, the opposite can be done Directional bias is drained from the cathode of rectifier 761B. The from The current flowing out of the zener diode 358A is restricted to the extent that the zener diode represents a resistance to the current coming from the voltage source 552.

The control pulse emitted by line B reaches the Steutar electrode of the stowable silicon rectifier 761B, and there none are oppositely directed There is more bias at its cathode, this impulse does that Switch through of the rectifier. The first two impulses cause the current in the base of transistors 751A and 751B decreases. So these transistors are saved.

The current coming from voltage source 590 via line 589 goes through diodes 894 A and 894B and causes an increase of two voltage intervals at resistor 902, whereby the same at terminal 333 of the comparator of Fig. 5 applied voltage is increased.

In the following, the interaction of those shown in FIGS. 6 and 7 shall be shown Circuits are shown. The first Impale in middle A switches the first renewable one Silica earbuds 461A of Figure 6 thereat. Switching through occurs at the same time The rectifier ensures that the DC voltage at connection point 562A is below the Sert falls, the su passage in the Zenerdtiode 558A is required whereby thèse the other Voltage passage blocks. through this, the voltage at junction 562A rises Zero down, transistor 451A is toggled, and the current in resistor 586A goes from first line 582 to second line 598 and causes a voltage increase in summing resistor 902. When the voltage from connection # 562A disappears, there is also no more oppositely directed bias at the cathode of the second Rectifier 461B, so that it can be switched over as soon as the orate Impals appears on line B. The new pulse t thus switches the rectifier 461B the transistor 45tub around and causes a renewed increase in voltage in the summing circuit FS. The alternating passage of control pulses in lines A and B allows every time r the Line 598 has a small amount of voltage in the memory to feed for the "fine display" FS. If all silicon lines 46tA to 461E are switched through, this is equal to the display of the value five for worth the me #.

The value of the resistors 586A to 586E for the "fine display" through The summation of the voltages is about ten kilo-ohms is / b in terms of the system @o dimensioned because # when the control transistor is switched, a voltage unit is applied to the Summing resistor 902 is output, which has a relatively small value of is about 10 ohms. The voltage unit is 1/11 of the voltage increase through the "size display", which is displayed by one of the resistors 886A to 886I when its corresponding transistor is switched.

The "fine display" resistor 586F has a value less than the resistors 586A through 586E, however, is higher than the values of the resistors for the "rough display" 886A to 886I. This resistance value is around 10 kilo-ohms md is dimensioned in such a way that # when the control transistor 451l sa 902e is switched over voltage is applied, which is six times the value of the resistance for the "fine display "586A to 586I has applied voltage. The resistors have the same way for the "coarse display" 886A to 886I have the same value and are smaller than the value of resistor 586F and have about 900 ohms, so there # after switching of the associated transistors increases the voltage across summing resistor 902 by eleven units assumes Compared to a voltage increase of one unit, the resistors 586A to 586E. The last Widaratand @ a6JhatainanklainaranWartvonatwa9o0hm and Said so that # when the transistor is switched the output at the summing resistor 902 increases by a value that is about 10 times greater than that through the resistors 886A to 886I applied value.

W now first the memory FM and the summing circuit FS for the "fine display" as in Fig. 6, the transistors 451A to 451E open in steps g @, they remain so generally in this position until a control pulse over the line B Sur control electrode 478F of the controlled silicon rectifier 461F causes because # the silicon rectifier is switched through. Then the voltage drop takes effect at the cathode of the Zener diode 558F to the quenching capacitor 454, which is between the The cathode of the zener diode 558F and the erase line C is on, and gives one negative discharge pulse via line C and diodes 484A to 4 to the control electrodes the controlled Siliciumglaiehriohtar 461A to 461E, whereby these are blocked and a positive pulse arrives at one plate of capacitor 454 for so long is connected to the quenching line C as a result of the conductive silicon rectifier 461F a negative pulse can reach the second plate of this capacitor. This silicon rectifier 461F effects switching on at the same time as it is switched on a delay in that it positively charges plate 601 of capacitor 600, creating a positive. . a al T r -n; r, f 'aeo. ldtag one negative release impulse is prevented. A negative IpHle on the upper plate of the Kandoneatore 454 causes a positive impala on the lower plate, which the controlled rectifier 461F is switched through and the first display process the "fine display" of FIG. 6 initiates.

When the stowable silicon rectifier 461F is down This causes a voltage drop across resistor 466F and creates a positive bias at terminal # 562E and at the base of transistor 451E, which makes it conductive, resistor 586E cannot supply a unit of voltage to summing resistor 902 and the transistor 451E becomes conductive as long as the rectifier 461F is turned on is.

In addition, the successive switching through of the teuerba is used Rectifiers 461A to 461E during the first part of the switching operations to the Connect ground line G to the conductors 521A to 5213 su so that the capacitive EL strips for the "fine display" F1 to F1 by the one arriving via line 669 Alternating current s lights are excited, the conductor 669 being connected to a Klenze one AC voltage source 554 leads, while the other terminal via the conductor 582 is connected to the ground.

We switch the controllable silicon rectifier 461A to 461E through of the controllable rectifier 461Z are blocked, the excitation of the capacitive one hears EL strips F1 to F5 for the "fine display" are not switched on, but switched through of the controllable rectifier 461F causes a hold position. This is due to the fact that the ti EL strips F1 to f5 for the "fine display" continue to emit light by continuing a positive half-wave received from the terminal 667 via the line 669 to a Side of the capacitive EL strips F1 to F5 can pass while the current is from the other side via the lines 521A to 521E, the diodes 540A to 540E, the Leitang 542, the connection # 634, the controllable silicon rectifier 461F, the resistor 466F to ground 245, with lines 582 and 665 to the opposite one Lead terminal 663 of the voltage source 544.

If a negative half-wave acts on the EL strips F1 to F5, the stron from one side of the strips F1 to F5 over the Leitang 669 sur Kleme 667, while a positive current from terminal 663 (tabor the lines 665, 582, the ground 245, the negative terminal of the power source 552, the line 554, the resistor 550A bia 550B # the diodes 536A to 536E, the liter 521A to 521E and dia others Side of the EL strips F1 to F5 is flowing.

W the controllable silicon rectifier 461F is switched through also the capacitive strip F6 through the Waohaelatrom on the opposite leads Sides of the strip are made to glow because of a lead 623 extending from a Connection of the winding 620 proceeds, which of its-Beits by induction from the primary winding 666 is excited during a half cycle of the alternating current, and from the line 623 su one L side of the capacitive EL strip F6 leads, with that of the opposite Side of the Often returning current via line 521F, resistor 635, controllable switched rectifier 461F, to ground and leads to line 582 and thus to the second terminal of winding 620.

Mwwiten terminal for winding 620 leads. boyau d a negative Falhmelle from head 623 from the above gnMmtwRKa <«$ @ e8% <Ms.MadWM negative end If Wieglekg 420 is deposited, a current of dmj <tpewiT-.Ws k development 520 goes to the diode 630, to conductor 542, to conductor 521F and to the opposing, capacitive EL strip F6.

If the controllable rectifier 461F is switched through, will also the voltage present at the cathode of the Zener diode 558F is reduced, so that the bias voltage at the base of the transistor 451F disappears, which blocks it and the resistor 586F across the diode 594F a decreasing voltage at the point 900 and across the Summing resistance was 902 applied, which is equal to 6/11 of the voltage through applied to each of the resistors 886A to 886I for the "coarse seige" and a sixth increase in voltage takes place at the Ifs for the Feinanseige, the corresponds to the switching through of the controllable rectifier 461F and thus the funs The increase in voltage of the fine adjustment is replaced by the resistors 586A to 586E.

So when the rectifier 461F is turned on and the rectifiers 461A to 461E at the end of the first part of the switching process gaaparrt aind, causes from the source of tension. le 552 outgoing bias because # to the cathodes of the Rectifier 461B to 461E are pretensioned again to bring them into the holding position, and since # these bias voltages via the Zener diodes 558A to 558D, as already described, reach. The transistors 451A to 451D become conductive, and so do the resistors 586A to 586E are temporarily put out of service. It is particularly important to note because # the Zener diode 558E is reset to the operating state and one Bias voltage is applied to terminal # 563, which is also applied to the base of the transistor 490 and makes it conductive.

If in the second part of the switching process the controllable rectifier 461A to 461D are switched through, which is done in the same way as it was already done for the first part of the switching process has been described, are gradual voltage units applied to terminal 900 of summing resistor 902, the seven, eight, nine and ten units correspond to the already existing resistance 586 applied first six tension units.

The switched rectifiers 461A to 461D connect the lines 522A to 522D with the ground, so that # the capacitive EL strips FV to F10 for the Fine display (Fig. 8) can be excited to glow by the alternating voltage, on one cell of each of the strips F7 through F10 through one of the winding 620 for the "fine display" incoming line 623 is applied. The other end of the winding 620 solder to the diode 638p of the line 582 r to the ground and on the other side connected to diode 630, connection 634 and line 521F.

During a positive half-wave that over the line 623 to a of the cells of the capacitive strips F7 to F10, which passes through the connection the corresponding rectifier are excited to glow, a corresponding one is created Current in the opposite cell via lines 522A to 522D, the controllable, Connected rectifier 461A to 46lu9, the ground, the line 582, the diode 638 and the winding 620.

During a negative half-wave, a current goes into the already mentioned Way from the first cell of each of the capacitive strips F7 to F10 via the line 623 sur winding 620 while a current similarly from the other end of the Winding 620, which is positive at the moment, to diode 630, sur connection 634, to conductor 521F, to controllable rectifier 461F, to ground, to ground lying terminal of the DC voltage source 552, to the conductor 554, to the resistors 550A to 550D, to diodes 536A to 536D, 528A to 528D, see also conductors 522A to 522D and below the opposing cells of the capacitive EL strips F7 to Fi 0.

The switching through of the controllable rectifier 461F sets * the positive Bias on the cathode of Zeneriode 558F and on the base of transistor 409 down, so that the rate of two switching agents is reached in order to avoid the switching crisis in a shunt with lines A and B on the one hand and via diodes 506 and 508 and the transistor 490 with the ground line G on the other hand. The transistor 490 is open when the rectifier 461E upon completion of the second Switching process of the shelf circuit 221 of Fig. 6 aw is. Lines A and B can now lead the control pulses up to the summing circuit for the "coarse line" in FIG. That goes as long as the accumulative rectifier 461F is switched through and the voltage drop across resistor 466 is an oppositely directed bias to the base of transistor 451E via connection 562E so that it is conductive remain.

SUr excitation of ten capacitive EL strips F1 to F10 for the fine display As shown in FIG. 8, there are six controllable silicon rectifiers needed what by the cross connections in the circuit of Fig. 6 «the features the hold position of the circuit connected to the controllable rectifier 461F is caused to differ slightly from the other circuits.

If the tenth unit of the measured value is used as an impulse to the storage circle for the fine display FM has been reached, this part is the spokesmen for the The silicon rectifiers 461F and 461A to 461D are turned on and through switching on rectifier 4616 opens transistor 490 so that # the accompanying commands can go to the section for the "coarse display". A switching through the rectifier 461E at the end of the switching process does not cause any increase the control voltage, which is due to the voltage drop in resistor 466F and the from this a blinding pretension is caused.

The information in the memory for the "fine display" FM and $ m SummlerlcraiÇ for the "fine display" FS are held back, on the EL strips F1 to F10 to stimulate light radiation until an extinguishing pulse over the extinguishing line C takes place, the rectifier switches 461A to 461F and that of the voltage source 552 is applied again to the connection # -points 562A to 562F, whereby transistors 451A through 451F are re-energized and the summing circuit current les-make. If there is a quenching pulse on conductor C, da # means da # itself the value of the measured value has decreased.

The circuit of the circuit of FIG. 7 is in w * -like the circuit of the circuit of FIG. 6. It can be seen, however, that the disabling of a of transistors 751A to 751I an increase in the voltage drop in the summing resistor 902, which corresponds to eleven voltage units of the "fine display", and one Represents control voltage, which is equal to alf voltage units of the measurement.

If it is assumed that # the control voltage at point 333 of Fig. 5 is greater than the signal voltage at point 313, the breakdown direction is in the output lines 339 and 341 of the phase discriminator 219 reversed and on Clear signal ut the line C given to all controllable silicon rectifiers the "fine display" in Fig. 6 to switch. If now the displayed by the display device 210 The signal is greater than the control voltage at point 333, and the direction of flow rotates in lines 339 and 341 again Uut = d and control pulses e heinon again deviating in lines A and B.

When measuring or switching off the display, look the "Fine display" (Fig. 6) switched off or deleted.

If the "fine display" is deleted, there can be no equality between the incoming signal and the displayed signal or the control signal so that # the "coarse display" is completely switched off until the input signal has decreased by more than ten units. With this assumption begins to build the display device of nouengdio display in n the "fine display".

The various circuits in Figure 7 are associated with the EL strips for the "rough display" C1 to C10 in FIGS. 8, 9, 10 via lines 669 and 721A bia 721J, as well as with the capacitive EL strips for the "rough display" C11 to C19 connected via lines 645 and 722A to 722I. All of the EL strips of Fig. 8 are supplied by the AC voltage source 544 shown in FIG. 6 via the lines 623, 645 and 669 encouraged lighting.

The current van der Flemme flows during a positive half-cycle 667 of the current source 544 via the line 669 see below the cell of the strips for the "coarse display" C1 to C10, as shown in Fig. 8, until the opposing cells are diesel Strips over the lines 721A bia 721J are connected to the Maaa line G, which then did the case when the silicon controllable rectifiers 761A through 761J are through and thus the ground via the line 582 and 665 on the other Terminal of voltage source 544 is present.

During a negative half-wave, the current from cells snows the capacitive strips C1 to C10 over the line 669 to one Terminal of voltage source 544, and a positive current flows from the other terminal of the voltage source 544 to the line 582 to ground, the other end with the ground, the DC voltage source 552, the line 671, the resistors 850A to 850J, the diodes 836A to 836J, the lines 721A to 721J and the opposite Cells of the capacitive EL strip C1 to C10 is connected.

The control loop circuit of the control circuit 221 shown in FIG. 7 acts in a slightly different way than the Senaltang shown in FIG. At the connection point 862A, located between the anode of Zener diode 858A and the anode of diode 866A is not only the conductor 872A, which is to the base of the transistor 751A of the Summing circuit for the "rough display" leads, but this lead 872A also works in the opposite direction through a resistor 834 to the base of another Transistor 790 of type NPN. The collector of this transistor 790 is with the control electrode 778J of the controllable silicon rectifier 761J, while its emitter is connected to the extinguishing conductor D.

The circuit is as follows, since before switching through do * silicon rectifier 761A is biased by zener diode 858A at junction 862A and from is conducted to the Baeia of the transistor 790, ao that they are conductive for so long is than the control electrode 778 of the rectifier 761J via the conductive transistor 790 is connected to the extinguishing conductor D. When the Controllable Rectifier 761A is turned on, the bias at point 862A and at the base disappears of transistor 790, so that # the lSor 790 is changed and because the control electrode 778J of the rectifier 761J of the quenching conductor D is switched off will.

If the control rectifiers 761A to 761I over the alternately over the lines A and B incoming control pulses are held through, causes a Subsequent control pulse in the Leitwag B but the diode 774J, because # the silicon rectifier 761J is switched through. As a result of the voltage reduction m of the cathode Zener diode 858J discharges capacitor 854 and gives a negative pulse from, which is via the quenching line D and via the diode 784A to 784I to the silicon rectifiers 761A to 761I and blocks rectifiers 761A to 761I. This erase pulse cannot act on the controllable silicon rectifier 761J because its control electrode 778J ready has been turned off by transistor 790.

We = the controllable rectifier 761A at the end of the first part of the switching process is switched off by switching through the rectifier 761J is, the transistor 790 is ninth by the AnwaohMB the po at connection point 862A biased through zener diode 858A, which makes the controllable rectifier 761A for a new hold process on availability.

In the orate part of the hold-up process, the step-by-step switching is effected the controllable silicon rectifier 761A to 761I, since # the resistor 886A eleven Voltage units and resistor 886B stores eleven new voltage units, what susamen swelundswansig results in units of tension; da # the resistance 886C stores another eleven voltage units, giving d voltage units; because # the resistor s86D supplies another eleven voltage units, which is forty-four Voltage units results; because # the resistor 886E eleven more voltage units stores what is fifty-five voltage units; da # the resistor 886F eleven further voltages oelohsrtg how there are sixty-six voltage units; because resistor 886G stores another eleven voltage units, making seventy-seven Result in units of tension; and since # the resistor 886H stores eleven voltage units, which is eighty-eight units of tension; and that # the resistor 886I eleven voltage units stores for a total of ninety-nine voltage units.

Dan by keeping the controllable silicon rectifier 761J bowworks, d the controllable rectifiers 761A to 761I are switched off, whereby the Resistors 886A to 886I are set to Bwtritb, Mil the transformers 751A bia 7511 w have been switched to the permeable state. The resistor 886J, the, as already mentioned, with the transistor 751J md dwm controllable silicon rectifier 761J is connected # is selected in such a way that # when the rectifier is connected 761J a voltage drop corresponding to one hand ten voltage units across the summing resistor 902 is laid.

In the second part of the switching process, each of the controllable GltiehriohtM * 761A to 7611 back through and brings over its associated resistance again eleven more voltage units on the summing resistor 902 vaut, whereby that gives a total of two hundred-man units of tension.

Zips circuits of Figures 6 and 7 permit any desired Number between one and two hundred nine is displayed.

During the second part of the switching process, due tu switches through the controllable rectifiers 761J and 761A illuminate the capacitive EL strip C11 of the "rough display" in FIG. 8 by means of the line 645 from the winding 642 (Fig. 6) applied alternating voltage. Winding 642 is inductive to the primary winding 666 connected and wound so that # a positive half-wave over the line 645 reaches a cell of the capacitive EL strip C11 and that # the return line over the opposite one through Telle through line 722A, / the connected rectifier 76tA, the ground line G to ground and then via line 582 (Fig. 6), the diode 654 and to the other terminal of the winding 642.

Current comes in during a negative half-wave of the supply voltage from the first cell of the above-mentioned capacitive EL-Strelfens C11 via the line 645 to the other end of the winding 642, from the other connection of the winding 642 through the diode 658, the line 662, the line 721J, the controllable, switched through Rectifier 761J, and the ground line G to ground, via the ground terminal of the DC voltage source 552, conductor 671, resistor 850A, diodes 836A and 830A and the line 722A, which are on the opposite cell of the capacitive EL-S as runs.

The silicon rectifiers 761B to 761I become equal in stages Connected to the capacitive bistre C12 to C19 in case of need sm light emission ansuregan.

The kepasitive BL strips of FIG. 6 receive do * svx light excitation required alternating current from the voltage source 554 in Fig. 6 g. You are over lines 623, 645 and 669 are connected to the voltage source.

In Fig. 9, the photoconductors are arranged in rows and with a common line, each photoconductor assigned to a BL segment is to stimulate this to emit light when it is shown by those shown in FIG EL strip has been switched.

10 corresponds to a superposition of FIGS. 8 and 9, the Points A, B and C of FIG. 9 coincide with points A1, B1 and 01 of FIG. 8. In this way the photoconductor PC1 is just above the EL strip for the "fine display" F1 and the EL strip for the "rough display" 01 * In the same way the photoconductor PC2 is overlaid with the EL strip F2 for the "fine display" and the EL strip C1 for "coarse display". As can be seen, the photoconductors are and the EL strips optically coupled to one another to form the EL cell array 220 to surrender. Fig. 10 shows the electrical connections between the segments of the Display device 226 and photoconductor switch 224 * Fig. 11 is an overall view showing the arrangement of the various components. The silicon controllable rectifiers of Figures 6 and 7 are with the EL strip of Fig. 8 for the "fine display" and the "size display" which in turn are optically coupled to the photoconductors of FIG. The photoconductors are with connected to the display segments of the display device 226. For example, the Controllable silicon rectifier 461A via line 521A to the EL strip connected for the "display" F1, while connected via line 522A to the EL strip for the "fine display" F7 is connected.

Likewise, rectifier 461B is connected via line 521B the "fine display" F2 and connected via the line 522B to the "fine display" F8. Rectifiers 461C through 461F are alike with their corresponding EL strips for the "fine display" How connected. has already been carried out, the "rough display" contains 236 nineteen horizontal EL strips and the "fine display" 238 ten vertical EL strips. In the "coarse display" 236 the controllable silicon rectifier 761A is via the Line 721A with the horizontal EL strip C1 and via line 722A with the horizontal EL strip C11 (which is not shown 0 connected to the rectifier 761B is via line 721B with domed horizontal EL strips 02 and upper the line 722B with the twelfth horizontal luminescent strip C12 (not shown shown iat) connected. The other affordable silicon rectifiers for the "rough display" 761C to 761J are in the same white with your entepreohendem horlsontalon EL strips tied together. the two hundred and seven phete conductors are PC1 through PC209 the strip F1 to F10 for the "fine display" and the strip C1 to C19 for the "Size display" superimposed. The last, right-hand row of the PC11, PC22, PC33 ... PC209 causes the segment display 240 of the basic symbol shown in FIG. 2 S1 to S19 shown. For example, the Phete leader PC11 prepares the EL strips for the "coarse display" C2 layered row of photo conductors for the Advertisement to one through the EL strips of the "display" F1 to F10 or through the strip for the "coarse" C2 are amgestrchlt.

Let it be assumed that #, starting from a given temperature, the thermocouple 210 shows a temperature increase of 36 °. This temperature increase is displayed by the thermal element as an input voltage. As Fig. 2 shows, who the "fine display" and the "size display" addressed. A series of control impulses goes alternately via lines A and B to the control circuit of Fig. 5. t e display device has four different modes of operation, which depends on whether the input signal strong or visually worsening, strong or weak decrease. In the example chosen The input signal increases sharply, which means that control commands alternate over the lines A and B for the "fine indication" 0 and the "coarse display" appear. The strong input signal causes the following: All controllable silicon rectifiers of the "fine display" of Fig. 6 are first changed over, b the "size display" of FIG. 7 an overall total of a block of eleven units through which the "Fine display" is not influenced until the input signal is received by the control command 334 has fallen below eleven units. Appears on line C. then a delete command, whereby the interconnection of the "fine display" is canceled and this can display "fine units" corresponding to the display. s dam input signal increases only slightly, the "rough display" is closed by transistor 490 and only the "fine display" is suggested.

The incoming signals on lines A and B cause a gradual Excitation and a control command until it is reduced to zero. In order to stops the summation.

In the third operating mode, i.e. with a weakly decreasing input signal, the information stored in the memory of Fig. 6 is overridden by an erase signal line C dismantled. If the incoming signal decreases strongly, all will be in the Storing of Fig. 6 and Fig. 7 stored information by delete commands in the Lines C and D * rat so the display device again after the first or the second operating mode works and adjust to the none display size can.

It can be seen that # with every deletion inside first the "fine display" from Fig. 6 is deleted.

Viewed individually, the display process is roughly as follows before dehg In the example mentioned, this is caused by the thermocouple 210 at connection point 313 (FIG. 5) shows a strong increase in voltage.

There is a voltage difference between connection points 313 and 333, and an AC voltage signal with a certain phase goes to the preamplifier phase discriminator 219, the voltage z. B. amplified five hundred times. This reinforcement is necessary because the thermal element 210 emits a very low voltage and a sufficient one Voltage for the correct operation of the display device bemötigt riz The phase discriminator 219 mm # differ as to whether the signal from the comparator 216 is positive or is negative.

If the control command is positive, i. H. when the tension is at the point 313 is higher than the voltage at point 333, 3 phase discriminator inputs 219 Signal on line 339 sm control circuit of Fig. 5, which the signal on the sw A to the control electrode 478A and the first controllable silicon rectifier 461A of Fig. 6 switches. ta, the storage circuit FS of FIG. 6 can be a voltage unit sum and the subsequent controllable silicon rectifier 461B for reception of the next star pulse switch- "a * If the controllable silicon rectifier 461A is conductive, current came from the AC voltage source 544 through the winding for the fine display of the multiple winding 616, but the EL strip F1, the conductor 623, via rectifier 4 and line 521A. Because the EL strip 11 for the fine display by the first impulse to light up a will, if he switches over the photoconductor PC1, it makes it conductive, which in turn makes it conductive the current coming from the DC voltage source 243 to the first KL display segment EL1 conducts and stimulates it to generate light.

The light excitation of the display segments 226 takes place in stages up to to the nicest segment. EL11 is controlled by the photoconductor PC11, which is controlled by the EL strip for the "rough display" C1 is illuminated, with the strip C1 through the switching on of the controllable silicon rectifier 761A in turn is stimulated will. The eleventh display segment is with the second group of photoconductors PC12 to PC22 via the line 252 (Fig. 3) and finds this already under Tension standing in front.

When the thermocouple 210 has thirty-eight units of the Size shows, there is a control voltage at point 313, which with respect to the Point 333 is always positive.

This control voltage is generated by the transistor 316 in a Weeheelstrom converted. A strong signal appears on the preamplifier 219, which is transmitted via the Line 339 to the control circuit A van piges 5 and red can get there to line /, around the first controllable silicon rectifier 761A of the summing circuit for the To switch the "coarse display" of FIG. This means that by switching the Equator 761A eleven display segments are excited to light up.

Since the control voltage still remains positive, there is a strong signal Abegeen that the second controllable silicon rectifier 761B of the one shown in FIG Circuit switched through. So you become twenty-two Voltage units, thirty-three voltage units by switching on the third silicon rectifier 761C indicated by EL display segments 229.

Since the control voltage between points 313 and 333 wwitM'MA podtt remains, a new, strong control pulse is emitted, which is temporarily the fourth controllable silicon rectifier 761D switches through. This in turn increases the amplitude of the signal at connection point 333 is greater than the amplitude of the signal at the point 313, since thermocouple 210 is now displaying thirty-six units of increase has wad because forty-four units are already displayed. The rule command thus becomes negative. Thus appears tia extinguishing pulse, which the fourth rectifier 761D of the summing circle for the "coarse display" (FIG. 7) and the entirety of the in Fig. 6 switches off the controllable silicon rectifier shown. This is reversed Reverse the phase of the control command again as the display becomes thirty-three units entrprioht. PoeitiTt Control pulses with a small amplitude reach the Ltitaagwn A aad B SUR Summing circle for the "fine display" up to three further display segments of the display device are lit, so that there are a total of thirty-six units are stimulated.

= SeS plumb can be seen, since # the voltages for the excitation of the display segments are always present in the circuits.

However, as long as the EL strips for the "coarse display" do not show Qu The controllable silicon gullet 761A to 761J are lit up by stacks of switching through the voltage cannot be between s adjacent rows of EL strips clear to those controlled by these strips neighboring To stimulate groups of eleven EL segments to glow, so that # a smaller number are excited to glow by EL strips for the "fine display" F1 to F10.

The display device according to the invention shows a typical network behavior, by using the same circuitry again and holding a hold position at the same time can cause, whereby the number of switching elements is reduced. The network behavior is due to the behavior of the controllable silicon rectifier 461F in the circuit 6 and 761J in the circuit of FIG. An impulse that the The controllable silicon rectifier 761J opens, the controllable rectifier blocks 761A to 7611, but without the rectifier from Fig. 6 or the light excitation / EL strip for the "fine display" Ft to P1C) and the EL strip for the "rough display" C1 to C9 that are already stimulated. At the same time, however, the EL strips for the "coarse display" C10 stimulated to glow as long as the controllable one Silicon rectifier 761J is permanently held.

The hold atellong is represented by diodes 528 in FIG. 6 and through the Diode 830 in Fig. 7, which are in the lines 521 and 721 and prevent because the voltages in their associated circuits change until the rectifiers 461A to 461E, or 761A to 761I are blocked by impulses that are simultaneously hold out Judges 461F and 761J.

The above circuit is only described as an example of the invention been, with numerous amendments are possible without the bume to leave the invention.

Claims (34)

P a t e n t a n s p r ü c h e 1. Electroluminescent display device, in the case of the voltage representing the measured values, that of a Electroluminescent cell emitted light falls on a photoconductor, which with a Electroluminescent segment is connected, then the gemeeeenen value attached, thereby characterized as a first group of parallel electroluminescent strips (F1 to F10) eretreokt in a first direction, d a second group of parallelon Electroluminescent strips (C1 to c19) extend in a second direction, the is substantially perpendicular to the first direction, d the photoconductor switch (PC1 to PC209) at the intersection of the two groups with electroluminescent strips are arranged, optleh each coupled to a strip of the two groups are so that they either close together or in groups thanks to the sur light emission know the stimulated strips of the first or the second group are switched over, until by comparing the voltage representing the measured value with the number of electroluminescent scenes excited to emit light (EL1 to EL209) corresponding voltage sum, the display corresponding to the measured value is obtained. Zo electroluminescence display device according to claim 1, dtdarehgkaniehatdßdiewl <MrolwiBe «nt & Segments h to XL209) are arranged in such a way that they are more changeable in * light column (226) Length, and that each of the electroluminescent segments at one end connected to another photoconductor switch and to its other end to mass (245) liage. 3. Electroluminescent display device according to claim 1, characterized in that because # the electroluminescent strips (F, C) are capacitive. 4. Electroluminescence display device according to claim 1, characterized in that because # the photoconductor switches are connected to each other in such a way that # the excitation of the Electroluminescent strips for the light emission of the second group (C) at the same time causes the excitation of several luminescent segments while the excitation but Elektrolamineezenzetreifena the first group (F) ear light generation for the Excitation of a single electroluminescent segment causes. 5. Electroluminescent display device according to any one of the claims 1 to 4, marked by the fact that all Photolaitar Umaeh Altar (PC12 ... PC22; PC23 ... PC33; ...) antlang ainaa StraifanadarawraitanGrappa (C2 ... 09) parallel to each other with their input at the output of the last photoconductor switch (PC11; PC22 ...) lie in the previous row. S An electroluminescent display device according to any of the preceding Claims, characterized in that the photoconductor switch (PC1 ... PC11) the first Rs (C1) parallel to each other with their entrances to ainar gaaainaaMan Voltage source (243) lie. 7. Electroluminescent display device according to claims 4 b s 6, characterized in that the last photoconductor changeover age (PC11; PC22 ...) in a row has a voltage switch in waiting position for the next Series of photoconductors representing 8. Electroluminescent display device according to claim 1 or if necessary. according to irgandainam of claims 2 to 7, characterized by the fact that # each of the two groups of electroluminescent strips (F, C) a group of alektroniachan Toggle switches (461A-F; 761A-J) to their excitation for light generation in dependence of the size of the anaMaigandan measurement value. 9. Electroluminescent display device according to claim 8, characterized in that da # the number of electronic so-holders that contain a sinuer group of I electrolumineasents N + 1 strip is connected, either N / 2 + 1 or is. 2 2 10t electroluminescent display device according to claim 1, dadaroh characterized because # a summing circuit (222) an 8uSe r the "fine display" (FS) and contains a summation cret for the "coarse display" (CS), corresponding to a summation range the number of electroluminescent segments excited to emit light (226) to build. 11. @ Electroluminescent display device according to claims 8 and 10, characterized in that # the sections of the SumaierkreiBeB (FS, CS) respectively to and from a group of electronic switches (FM, CM) be operated. 12. 2. Electroluminescent display device according to claims 1 tone 10, characterized in that it contains a comparison circuit (316) which is connected on the one hand to a display unit (210), which is one of the Measured value supplies corresponding voltage, and on the other hand with the output of the summing circuit is connected, which delivers a control command to oin output (314) as long as the two voltages from each other are verachi. 13. Electroluminescent display device according to claims 8 and 12, characterized in that the output (314) of the comparator and the swipe two groups of electronic switches (461A-F; 761A-J) have a control loop a phase discriminator (219) and a comparison circuit (216) are interposed is. 14. Electroluminescent display device according to claim 1 and AnQpraoh 2, marked d the electroluminescent display segments (EL1 ... EL209) connected at one of its ends to the ground (245) via a brightness regulator (228) are. 15. Electroluminescent display device according to claim 14, characterized marked because # the brightness regulator (228) rectifier diodes in a bridge circuit (256), which is connected to a diagonal (264, 273) in series with the ground line of the Electroluminescent display device, and that it is a DC voltage source (280) with a voltage divider (284) in its other diagonal (261, 268). 16. Electroluminescent display device according to claims 8, 12 and 13, characterized in that # the control loop (218) comprises a first device (400, 401) with two Regellaiteron (A, B)) contains the electronic switch to activate a second device (422, 424) with two extinguishing ladders (C, D) contains in order to depend on the phase signal supplied by the equalizer (216) the electronic Umeohalter (461A-F; 761A-J) either at the same time (C) or delayed (D) switch off. 17. Electroluminescent display device according to claim 8, characterized characterized that each electronic switch of the two groups (461A-F; 761A-J) contains a controllable silicon rectifier with its cathode and its Control electrode is connected to ground (G, 245); with its control electrode (478; 774) via a Diode (474, 774) with the control line (A or B) and connected to an extinguishing line (C) or (D) via a diode (484 or 784) is; and the anode of which has the following connections; one connection # to at least an electroluminescent strip (FC) cell, one connection to a secondary winding (620 or 642) of a transformer transformer (546) via two in series Diodes (@@ 0, 528 or 658, 830), one connection across the series resistor (550 or 850) and the two diodes (536, 528 or 836, 830) to the DC voltage source (552) and to the cathode of a Zener diode (558 or 858). 18. Electroluminescent display device according to claim 17, characterized marked as # with acceptance of the last electronic switch (461F, 761J) of each group 619 connection of the anode of each electronic switch ait the Secondary winding (620 * of the 642) d transformer transformer (546) a third diode (540 or 540) in series with the two preceding diodes, since # dionM third diode connected between the other two diodes la opposite sense is. 19 * Electroluminescence display device according to claim 17, characterized characterized because # the anode of each Zener diode (558, 858) with the acceptance of the penultimate zener diode (5S8X of the for the fine display (FM) with the control electrode a summing switch (451, 751) is connected to the corresponding summing circuit (FS or CS) and with the exception of the last Zener diode in the group of electronic switches through a Diode (566, 866) with the cathode of the following, stoker. bar silicon rectifier is connected. 20. Electroluminescent display device according to claims 9, 17 and 19, characterized in that # the anodes of the UnA - 1 and N - 1 first electronic Changeover switch of the two 2 2 2 groups of electroluminescent strips over the lines (522, 722) with a cell of an electroluminescent strip (F7 ... Fiv; C11 ... C19) are connected. 21. Electroluminescent display device according to claims 1 and 17 characterized in that each of the electroluminescent strips of the two groups (C or F) at one end with either one end of the primary winding (666) or with connected to one end of the secondary winding (620, 642) of the transformer transformer (546) is, on whose primary winding an AC voltage source (544) is connected. 22. Electroluminescent display device according to speeches 16 and 17, characterized in that # within a group of electroluminescent strips (FM or CM) the control electrode of the next but one electronic switch are connected to the same control line (A or B) and that all electronic Switches in a group with their control electrodes on the same extinguishing line (0 odor D) lie. 23. Electroluminescent display device according to claims 8, 16 and 7, characterized ãu between the group of electronic switches (461) iSlSr the summation rank the "fine display" and for the group of electronic switches (761) for the summation of the "rough display" between a transistor (490) is connected between lines (A and B) and ground (G), da # the third electrode of this transistor (490) parallel to the anodes of the zener diodes (558E, 558F), with the exception of the penultimate electronic switch connected to the last electronic switch (461) of the first group (FM) are. 24. Electroluminescent display device according to claims 17 and 19, characterized in that # the cathode of the last Zener diode (558F) of the storage circuit for the "fine display" (FM) via a capacitor (454) with the extinguishing line (C) for this spoke is connected. 25. Electroluminescent display device according to claim 17, characterized marked because # the cathode of the last electronic switch (461F) of the Memory circuits for the "fine display" (FM) via the parallel connection of a resistor (466F) and a condenser (600) on the ground line (G). 26. Electroluminescent display device according to claims 8, 17, 19, characterized by the fact that the control electrode of the last electronic switch (761J) of the memory circuit for the "coarse display" (CM) with the anode of the Zener diode (858A) is connected across the passage of the collector-base of a transistor (740) connected to the first electronic switch (761A) of the same memory circuit is, the emitter of the transistor (740) with a quenching capacitor (854) and connected to the extraction line (D) for the section of the "coarse display" is. 27. Electroluminescent display device according to claims 16, 22, 26, characterized in that # the extinguishing line (D) connected to the memory for the "Coarse display" (CM) is connected, a delay circuit (426, 428) contains. 28. Electroluminescent display device h claims 10, 11 and 17 # characterized in that each of the summing circuits connected to one storage circuit (FS, CS) contains several summing switches (451, 751) because # the control electrodes of these Summing switches are connected to the anode of the Zener diode (558, 858), which are connected to Exception of the last Zener diode (55SE) for the memory for the "fine display" associated with the corresponding electronic switch (461, 761) that the Electrodes of this summing switch via a resistor (586, 886) parallel to one another with a DC voltage source (590) and via a half-wave rectifier (594, 894) are connected to a lead (598) that the third electrodes of this Summing switches are connected in parallel to one another with a line (582) which leads from ground to a point (614), which through half-wave rectifiers (638, 654) is connected to the secondary windings (620, 642), and that between the derivation (598) and the mass (245) is a summing resistor (902). 29. Electroluminescent display device according to claims 12 and 28, characterized in that the processing (598) both summing circles (FS, CS) is common, and that # the connection point (900) of the operation with the Summing resistor (902) connected to one of the electrodes in comparator (@ 16) is. 30. Electroluminescence display device according to claims 17 to t9 dadtirch marked, d the cathode of the last Zener diode sinues each storage circuit a (rA; ON) through a quenching capacitor (454, 854) with the quenching line (C or D) for the corresponding storage circuit is connected. 31. Electroluminescent display device according to claim 28, characterized marked because # the penultimate summing switch (451E of the summing circuit (FS) for the "fine display" with the cathode of the last electronic switch (461F) of the associated storage circuit is connected. 32. Electroluminescent display device according to claim 28, dadurah characterized as # the resistance values of the resistors (586, 886) that are located between the electrodes of the summation holder and the balance voltage source (590) are located, ao can be selected so that if the summing switch is kept a desired voltage increase the rule breakdown occurs. 33. Electroluminescent display device according to claim 32, dadurah because # all values of the summing resistors (586, 886) are within the same Abeohnittee (ES or ct;) with the exception of the last summing resistor (586F or 886J) are the same, this last summing resistor a has such a value that # the resulting when switching this summing resistor control voltage is equal to the product of the increase in control voltage when switching over any other resistance of this section with the number of summing switches In this section. 34. Electroluminescent display device according to claims 32 and 33, characterized in that the increase in the control voltage, which duroh the summation for the "fine display" and the "rough display" is the number of ElektrolUHineszenasegnento, which are stimulated to glow by switching an electronic switch be, corresponds.