DE1548479C - Portable sheep orientation device for the blind to determine objects in the field of vision using the echo method - Google Patents

Description

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The invention relates to a control circuit for a device with electroluminescent display elements, light-sensitive in the case of an arrangement consisting of electroluminescent lighting elements Elements are assigned, one of which each with one of the electroluminescent display elements is connected to its control.

It is known (German Auslegeschrift 1138 867), to arrange a number of light-sensitive elements in the effective area of a luminous capacitor, so that the light emitted by the luminous capacitor depending on a measured value voltage on different of the photosensitive elements acts, whereby by changing the conductivity of the photosensitive Elements connected to these electroluminescent display elements at voltage are placed and thus deliver an advertisement. It can thus be a function of the measured value voltage achieve wandering light spot. With this arrangement it is also known to make it visible of an image to arrange fluorescent cells in the form of coordinates and in rows or columns with light-sensitive Connect elements that are arranged with one in the Z-axis or the Y-axis Luminous capacitor are in operative engagement. Apart from the fact that the luminous capacitors are difficult to manufacture are, can not be with the known arrangement a continuous light band or a light column achieve, which is desired in many cases, for example in the instrumentation of aircraft.

Furthermore, picture tubes are known which consist of a luminescent applied to a glass surface Layer that is controlled by photoconductor. One arranges the layer in the form of horizontal ones and vertical stripes and when certain stripes are excited with alternating voltage, a point of light is created two strips at the intersection.

In contrast, the invention is based on the object of providing a voltage value that is proportional to the voltage value to be displayed Generate light band, with the arrangement of the electroluminescent light elements and the light-sensitive elements are simple and expedient and the circuit complexity for controlling the arrangement is relatively low.

This object is achieved according to the invention in that electrical light strips in rows and columns are arranged and a light-sensitive element is provided at each intersection is that the light-sensitive elements of the first row are directly connected to the voltage source and the photosensitive elements of each subsequent row over the last photosensitive element of the previous row are connected to the voltage source, and that for the excitation of the strips of light an Anstcuerungsnet / .werk is provided at the voltage to be displayed at a comparison level ■ measured value directly and the!, sealing strips exciting voltage are applied via a summing stage.

This gives the advantage that; even with one very large number of electroluminescent air / .eigeelemente the arrangement of the light strips and photosensitive elements in a matrix have a relatively low cost Aiircgescliiiltiing the! .Sealing strip requires. Should for example, the display by means of 200 elcktroluniiiios / icreiiclen Aii / cigeelcmentcii are done so are to their modulation also provided 209 light-sensitive elements, but only of ten columns forming and nineteen the lines forming light strips are activated. Because the light strips and the light-sensitive elements do not provide the actual display, but rather to control the Display elements are provided, one does not need to consider the viewer with this arrangement to take, but can build this solely with regard to circuit expediency.

The display is done very quickly by switching the light strips in rows. Thus results a rough display by activating all light-sensitive elements at the same time in a row, the row-by-row progression over the last light in each row. sensitive element takes place. After activating the light-sensitive ones in rows or rows The fine display results from the fact that a certain number of elements is shown in the next line activated by light-sensitive elements through the light strips arranged in columns.

In a summing step, a voltage proportional to the respectively excited light strip is generated stored, which is compared in a comparison stage with the voltage measurement value to be displayed. As long as a differential voltage is determined in the comparison stage, either more Luminous strips stimulated or already stimulated luminous controversies are deleted again. In this way it arises a display with high reliability.

Furthermore, the display device according to the invention is resistant to voltage fluctuations as well Disturbance and superimposition phenomena insensitive.

Further advantageous refinements and developments of the invention are set out in the subclaims marked.

The invention is explained in more detail below with reference to the drawing. It shows

F i g. 1 is a block diagram of the entire display device,

F i g. 2 shows the arrangement of the light strips, the light-sensitive elements and the display elements as well as their circuit connections,

F i g. 3 a circuit diagram for adjusting the brightness of the display elements,

F i g. 4 a circuit diagram of the comparison stage and the control stage,

F i g. 5 a circuit diagram of the excitation circuit and the summing stage for the column control,

F i g. 6 a circuit diagram of the activation circuit and the totalizing stage for the line control,

F i g. 7 an arrangement of the electric light strips,

F i g. 8 shows an arrangement of the photosensitive Elements and

F i g. ^l ) an arrangement of the light strips and light-sensitive elements one above the other.
In Fig. 1, a measuring device 210 supplies, as a function of, for example, a temperature, a fuel flow rate or a speed, a direct voltage which represents the voltage to be displayed and which is transmitted via a line 21 1 to a bracket 216 . In the Ver. - ( 'leielisstul'e / is formed spunnung a Oilferen, (lie on a line 215 in a Stetwrsttife 218 and via a line 217 into a Anregesclüiltung

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221 for the column and row control of the light is reached, for example, via the switch 76L4 of the strip. Luminous strip C1 in the first row is excited by the excitation circuit 221, so the light-sensitive elements FC1 to FC1 to strip in the luminous strip arrangement 220 Span-PCI1 get into the conductive state via a line 223 to corresponding luminous elements. The sensation applied. This voltage is also carried via a 5 borrowed elements PCI to PCU on the one hand via line 225 to a summing stage 222 via line 250 to an alternating voltage source 243. The connected to the number of excited light strips, which is grounded at 245, and are connected to the corresponding total voltage, in turn, via a line 290 with its line 334 to the input 227 of the comparison stage associated display element EL 1 to ELH ver-216, which is derived from the Total voltage and that to be displayed. The other connections of the display elements lowing voltage measurement, which forms the differential voltage, are all connected to a grounded line. The summing step 222 thus represents a 248. If the light-sensitive elements are returned. The arrows 229 indicate the PCI to PCI1 in the conductive state, so the activation of the arrangement 224 of the light-sensitive voltage is applied to the display elements, elements at the intersection points the lights 15 that light up.

strip. The individual light-sensitive elements The light-sensitive luminescent display elements 226 are connected to the electro-sensitive element PC 11 via a connection 230 each via the last light in the first row. Borrowed elements PC 12 to PC 22 of the second row Furthermore, the display elements are connected to the voltage source 243 via a line. For this

231 connected to a brightness setting 228, 20 the light-sensitive elements PC 12 to PC 22, which in turn are connected to earth 248. via a line 252 with the line 290 between

The control network 232 consists of the element PCIl and the display element 11 electronic stages 216, 218, 221 and 222. The linked. On the other hand, the photosensitive control circuit comprises the drive network elements PC 12 to PC 22 each via a line

232 as well as the matrix 234, which consists of the light strip arrangement 220 connected to the display elements EL 12 to EL 22 and the arrangement of the light-sensitive. There is only the last connection line 254 borrowed elements 224. The matrix 234 is shown in FIG. It can therefore only be explained in more detail with the aid of FIG. 2 when activating the following. Element PC 11 the voltage from the voltage

In Fig. 2, 209 light-sensitive elements PCI source 243 are provided on the light-sensitive elements PC 12 to PC 209, each of which arrives at one 30 to PC 22. If PCIl can be connected to voltage in the conductive state and the light is then excited with its other connection with an electrical strip C 2 via switch 761B, the light-sensitive luminescent display elements EL 1 to EL 209 get borrowed elements PC 12 to PC 22 are connected in the conductive. The display elements are in a state, and the display elements EL 12 to EL 22 light column combined and consist of a 35 are illuminated. The interconnections of the number of small segments made of phosphorus. The remaining light-sensitive elements with the number of spans of the display elements depends on the voltage source and the display elements are made with the desired accuracy, in accordance with the resolution,
and the requirements for the sensitivity of the Da for the nineteen lines of light strips only display. 40 ten switches 76L4 to 7617 and for the ten

In the matrix 234 ten electric light columns, only six switches 461A to 461F are provided

strip Fl to FlO in columns and nineteen elek- are, there is a substantial simplification of the

tric light strips Cl to C19 arranged in lines.

net. The photosensitive elements PCI to PC 209 in FIG. 3 is a hand-operated sanctuary at the crossing points of the luminosity setting for the display elements 226 in the columns and rows, with the exception. In this case, the elements of each row that are not directly connected to earth are elements of each line which are all display elements 226 of the last light-sensitive common line 248 designated by 51 to 519. The excitation circuit 221 is applied, but to the one bridge diagonal 264, according to FIG. 1 is divided into an excitation circuit 236 for 273 a diode bridge 256 consisting of diodes, the row control and an excitation circuit 238 50 whose other diagonals 261, 268 are divided via lines for column control of the light strips. 274 and 275 with the tap that can be set via 255. The excitation circuit for the rows and columns is connected to 284 of a potentiometer 282, which is provided with switches 761 and 461, which are connected to a direct voltage 276, 288 lines 721 and 722 via wire ends 283 and 286 or 521 and 522 are connected to the ent. The diodes of the bridge are connected in speaking light strips in rows and columns 55 in the specified manner,
are connected. The switches and lines are designated with letters in their order by setting the potentiometer accordingly. meters 282, the brightness of the display elements can be adjusted by means of a switch, two luminous strips 226 can be adjusted by the constant stripes, whereby it is ensured that the voltage at the bridge diagonal 261, 268 of the that both luminous strips are not at the same time on span 60 rms value of the can be connected to the voltage via the diode bridge. The AC voltage applied to switches 761 or display elements are controlled semiconductor rectifiers. is bordered. Since the display elements are luminous

When a light strip is excited, the in sators would be when fed with direct voltage Light-sensitive light-sensitive parts lying within its effective range do not light up. If you change about that Elements brought into the conductive state. The 65 potentiometers that are connected to the alternating voltage The display elements are only activated, however, so the component changes when the light-sensitive elements have brightness of the display elements,

voltage is applied to the display elements. In Fig. 4 this is the voltage supplying the measured value

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Measuring device 210 a thermocouple, which is connected to an alternating voltage source F. The control electrodes

Individual transistor 316 is connected. The thermo- 342 and 346 are connected via the resistors 350 and

element 210 is in series with a resistor 311, 374 and the common line 341 on the

where from connection point 313 a connection to ground 245.

314 to the preamplifier phase discriminator 219 5 The voltage source 324 supplies a transfer. The emitter 315 of the PNP transistor 316 is connected to the junction point 313 carrier 362 and a line 363 an alternating voltage. The voltage of the frequency /. This alternating voltage is the base 318 of the transistor is in series with a limiting resistor 320, a rectifier diode of the frequency / converted by the rectifier diode 355 into positive pulses, which is transmitted to the anodes 352 322 and the secondary winding of a transformer 325, io and 366 of the controllable silicon rectifier 344 the AC and 348 serving as a reference voltage. The cathodes 356 and 370 of this selvoltage 324 of about 10 V in the circuit of the two silicon rectifiers are transmitted via resistors. The diode 322 is connected in such a way that 358 or 372 are connected to the ground 341,
it blocks the positive half-waves and only the negative half-waves of the reference voltage 324 to the base 15 DC voltage pulses applied to the phase discriminator 219 are in the same phase with 318, so that the transistor 316 as a switch for the voltage of the reference voltage source 324 when can work. The collector 328 of the transistor is connected to the value provided by the meter 210 with respect to the junction 333 which increases the bias voltage. Conversely, however, in turn, with the other end of the secondary winding of the transformer 325 is connected when the value of the measured variable decreases. The 20 received the DC voltage pulses at the input of the connection 333 is also via a capacitor discriminator 219 opposite phase with respect to 331 and a line 334 with the one shown in FIGS. 5 to the phase of reference voltage 324.
In the control stage 218, the values of the second voltage are connected, which is selected with the voltage present at the point resistors R 1 and 380 so that the voltage present at signals 313 is to be compared. 25 of the same amplitude, but opposite phase, this second voltage is a sum voltage at points 19 and 21. The signal on and corresponds to the number of illuminated display point 19 has so long opposite phase to the elements. coming from the comparison stage 216 pulsating

The thermocouple 210, the capacitor 331 and signals, as the signal appearing at point 21 with

the preamplifier 219 ( FIG. 4) are the signals coming from the comparison stage 216 via the lines 30

gen 336 or 337 and 338 is in phase with the mass 245. The controllable silicon rectifier 348

bound. switches through and gives a positive pulse in

When the voltage at point 313 increases, resistor 372 decreases as long as the voltage is on

an increase in the thermocouple 210 at point 19 and the reference voltage in phase

corresponds to the temperature shown, appears with the 35 are, i.e. that is, as long as the measured value voltage rises. the

Phase of the reference voltage 324 a pulsating controllable silicon rectifier 344 switches through

DC signal on output line 314. If and causes a positive pulse in the resistor

conversely, the temperature displayed by the thermocouple, if the voltage at point 21 and the reference

If the temperature drops, the voltage across the voltage 324 will be in phase with each other, i. i.e. if

Point 313 in relation to which at point 333 the measured value voltage drops.

applied voltage, and in the output line 314 a pulse generator stage G for exciting the a pulsating direct current signal appears, the light strip of which contains a voltage source 223, which Phase of the AC voltage serving as a reference voltage is connected to the diode 355 and to its release 324 is opposite, and is passed through output terminals 402 and 403 AC voltage line 314 to the preamplifier and phase discriminating 45 delivers pulses at a frequency which is half that nator 219, which is at the input of the control stage 218. Frequency compared to the AC voltage source

This preamplifier and phase discriminator 219 has 324 and the switching transistors 400 and 401

contains a transistor β 1 of the type NPN with the type NPN either opens or closes.

Base 13, which is connected to the output line 314 via an If the switching transistors 400 and 401 ent-

Coupling capacitor Cl is connected, 50 are neither open nor closed, the

while the emitter 15 via a resistor R 1 voltage 324, when the controllable silicon equalizer

with the mass 245 and consequently also with the other judge 344 is open, either in a line A.

Output line 336 of the comparison stage 216 connected or B appear.

that is. The emitter 15 is connected via a resistor R 2. For this purpose, the cathode 356 of the control

connected to a point 17 at the base, while 55 baren silicon rectifier 344 to the collectors

the collector 18 is connected to the 410 and 412 of the transistors 400 and 401 via the resistor A3,

same point 17 and with the positive terminal of one of the bases 414 and 415 of the transistors 400

DC voltage source 12 via resistor 380 or 401 are connected to the voltage source

connected is. The emitter 15 and the collector 18 den, which has only half the frequency. The management

are on lines 339 and 340 with a 60 gene A and B are with the emitters of the transistors

AC voltage source F connected, which is connected as loading 400 and 401, respectively.

tension is used, a frequency / has and the cathode 370 of the controllable silicon DC voltage source 324 contains. The lines 339 and the rectifier 348 are connected via a line 420 to a 340 are over the direct current blocking capacitor pulse generator stage H to extinguish the illuminators 345 and 347 with the control electrodes 342 65 strip. Stage H contains two transistors 422 and 346 of silicon controllable rectifiers 344 and 424 of the NPN type and a delay and 348 connected. The silicon rectifier 344 and circuit, which consists of a resistor 426 and a 348 capacitor 428 with their anodes 352 and 366 in parallel. The collectors 436 and

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437 of the transistors 422 and 424 are each connected to the first rectifier with the lines /! and C

a line C and D connected. connected is. Its mode of action corresponds to that

The ones from the silicon controllable rectifier 348 of the first rectifier, of course with respect to

Coming impulses arrive on the one hand through its leads and through the diodes 474 B and

Resistor 426 to base 430 of transistor 424 5 484B.

and to the capacitor 428, on the other hand via the silicon controllable rectifiers 461C and

Resistor 432 to base 434 of transistor 422.461E have the same circuit as the DC

Since the emitter electrodes 438 and 439 via the power converter 461A, while the controllable silicon equalization

device 341 are connected to ground 245, the rectifiers 461 D and 461F can use the same circuits as

Pulses in a conducting state of the transistors to io the rectifier have 461 B. A transistor 490

Mass flow off, whereby the light strips over which is of the type NPN with its base 492 over a

Lines C or D are deleted. Resistor 494 with a point 563 between the

The pulses passed by the rectifier 344 are anode of a zener diode 558 and the anode of a

appear on line A or on line B, diode 566 E connected. The emitter 498 of the tran-

which depends on whether the transistor 400 or the 15 sistor 490 is connected to the ground line G,

Transistor 401 is conductive at the given instant. while its collector 500 with the point 501 and

When a pulse train is emitted, the cathodes of the two diodes 506 and 508 appear

the pulses of one direction in the line A and which is bound, whose anodes via the diode 506 with the

Pulses in the other direction on line B or input line A and through diode 508 with the

conversely, which depends on which pliases or input line B are connected. In the supply line / 1

Between the pulse train and the switchover there is a resistor 514 between the diode 506 and

frequency of the transistors 400 and 401 exists. the diode 474 E, and in the line B is a

This process lasts as long as that at point resistor 516 between diode 508 and the

313 incoming signal grows, d. This means that the diode 474 F.

Temperature displayed by thermocouple 210 rises. 25 The silicon rectifiers 46L4 to 461 F are

If the measured voltage value falls, the phase measured in FIG. 2 is reversed via six lines 521 A to 521F

of the signal output by transistor 316, and four lines 522 A to 522 D with the light

thereby connecting the controllable silicon rectifier 348 strips.

becomes conductive. It conducts a positive pulse over the lines 521,4 and 522,4 lead according to the resistor 372 and switches the transistors 30 Fig. 5 to a point 524/1, at which the 422 and 424 also switch over. The current continues to pass in the anode 525/4 of the silicon rectifier 461.4 and the form of pulses to the transistors 422 and 424, cathode of the diode 528.4, whose anode with even if a single pulse is a column of the point 532, 4 is connected, which can also erase light strips if it is through the cathode of a diode 536/1. The anode of line C, transistor 422, goes to ground 245. 35 Diode 540/1 lies at point 533.4 in the line The pulses through the delay circuit with 521/1, while its cathode on line 524 charges the resistor 426 on the capacitor 428, which leads to the AC voltage source 544 and the base 430 of transistor 424 open, this transformer 546 feeds. The anode of the diode sen and allow the deletion of a line of the 536/1 is via a resistor 550.4 via the Lei light strips via the line D, the transistor 424 40 device 554 to the DC voltage source 552. The to ground 245th anode of the Diode 536.4 is connected to the cathode of the In Fig. 5 is the excitation circuit for the column Zener diode 558/1. The cathode 464 B of the controllable control of the light strips and the associated silicon rectifier 461 B is shown at the cathode summing stage. In Fig. 5 that of a diode 566.4, the anode of which is connected to the anode of the summing stage for the columns essentially 45 Zener diode 558/1 at a point 562.4, six transistors 451.4 to 451 F of the NPN type, to which also the base S70A of a transistor and associated, controllable silicon rectifier 451.4 of the NPN type via a resistor 574/1 461.4 to 461F, which is connected to ground via a line G. In the circuit of the silicon 245 lie. The controllable silicon rectifier 461/1 rectifier 46L4 shares the equilibrium 466.4 coming from the voltage source 552 via the line is on its cathode 464/1 via a blocking resistor 466.4 with the line G and its control voltage and is connected to the resistor 550.4, at the electrode 478A via a bleeder resistor 468.4 Zener diode 558/1 and at the blocking resistor 466 B of the connected to the line G. controllable silicon rectifier 461 B. The span-Die line A is connected via a line 470.4 to the voltage in line 554 in the circuit of the two-anode of a diode 474.4, the cathode of which is 55 th controllable silicon rectifier 461 B divided on the Control electrode 478.4 is located. This control and is connected to the resistor 550 #, to the Zener diode electrode 478 / i is via a line 480A to the 558 B and to the blocking resistor 466 C of the third anode of a diode 484.4, the cathode of which is connected to the controllable silicon rectifier 461C. Which is connected by line C. The diode 474/1 is connected to the DC voltage source 552 so that it generates positive pulses which are transmitted via the 60 in the circuits of the third, fourth, line A to the control electrode 478/1 from the in the fifth controllable silicon rectifier 461 C. Fig. 4 come circuits shown. to 461 £ divided in the same way as for the Diode 484/1 is connected to the line C, circuits of the first and second controllable that they negative pulses to the control electrode 478/1 silicon rectifier 461/1 and 461 B described passes when this from transistor 422 of Fi g. 4 became 65. In this way, the voltage reaches ground 245 via line C. That of the DC voltage source 552 in the second silicon controlled rectifier 461 B is connected in circuit of the last silicon rectifier coupler 461F, the way to the lines B and C, as the last namely at a point between the

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Resistor 550F, the last Zener diode 558.F and the last resistance 608.

When the controllable silicon rectifiers are blocked, voltage is applied to the cathode of the silicon rectifier after passing through the zener diode in the reverse direction. This prevents that a control pulse can reach the control electrodes, which would otherwise result in an uncontrolled drain which could enable electrons via the silicon rectifier.

In the summing stage in FIG. 5, the transistor 451.4 is connected at its emitter 508.4 to the first line 582, while a collector 584 A is connected via a resistor 586.4 to the line 588, which leads to the DC voltage source 590. The end of the resistor 5S6A, which is connected to the collector 584.4 of the transistor 451A , is also connected to the anode of the diode 594 A, the cathode of which is connected to a second line 598 which is connected to the end 900 of a shown in FIG. 6 shown summing resistor 902 leads.

Transistors 4515 to 451F are connected to lines 582, 588 and 598 in the same way as transistor 451,4. Between the Zener diode 5585 and the diode 566 5 there is a line 572 B at point 5625, which in turn is connected to the base 5705 of the transistor 4515 via a resistor 5745.

The diodes 594.4 to 594 F are chosen so that they conduct at a voltage drop of 0.5 V between anode and cathode and connect the corresponding resistor 586 Λ to 586 F to the second line of the line 598, which leads to the end of 900 des Summing resistor 902 leads. So if the transistors 451 A to 451F are conductive, the resistors 586.4 to 586 F are directly connected to the line 582, so that the voltage drop across the corresponding diodes 594 A to 594F is not large enough. But if one of the transistors is open, ie blocks the passage of current, the potential at the corresponding diode 594 is correspondingly large to connect the corresponding resistor 586 via the diode 594 to the line 598 in order to cause a voltage drop in the summing resistor 902 and the voltage at the terminal 333 of the comparison stage 216 to increase.

In the circuit of the last controllable silicon rectifier 461 F there is a capacitor 600 between the cathode 464 F of the rectifier and the ground line G. This capacitor serves to divert interfering AC voltage pulses from the resistor 466 F. It can also be seen that point 572, the leads through a resistor 574 E to the base of the transistor 45IjE, is not connected to the common connection of the anode of the Zener diode 558 E and the diode 566 E , but to the common connection 562 E of the cathode of the diode 566 E and the cathode 464F of the controllable Silicon rectifier 461F. However, this modified connection of the line 572 does not change the behavior of the transistor 451 E with respect to the respective silicon controlled rectifier 461 E. belonging to this silicon controlled rectifier 461 F Zener diode 558 F is connected via a resistor 608 via the terminal 563 to the base of the transistor 490 . It is also connected via a resistor 574 F to the base of the transistor 570F 451F.

Line 582 is connected to windings 620 and 642 via terminal 614. The winding 620 for the column control is connected with its connections via a common line 623 to the outer ends of the light strips F 6 to F 0 for the columns in FIG the anode of the diode is at connection 614, on the other hand with a diode 630

ίο connected, the cathode of which is connected to line 542, and which in turn is at point 634 on line 521F and resistor 635, which is in of line 521F is located between terminal 634 and diode 528F.

The winding 642 for the row control contains a terminal 644 which leads to the other outer Ends of the light strips CIl to C19 for the lines leads via a common line 645. The second connection 648 of the winding 642 is on the one hand with the Diode 654 connected, the anode of which is connected to terminal 614, 'on the other hand to the diode 658, whose Cathode is on line 662 which is used in the summing stage for the rows in FIG. 6 leads. The ones with the Circuits connected to windings 620 and 640 are actually multiple windings.

A connection 663 of the AC voltage source 544 is connected to the connection point via a line 665 614, while the second connection 667 is connected to the other outer ends of the light strips Fl to F 5 for the columns and with the outer ends of the light strips C1 to C10 for the rows via line 669 to FIG. 7 is connected.

The circuits of FIG. In addition to the common lines 4, 5, D and G , 5 and 6 also have common power supply lines 589, 662, 671 and the conductor 598.

In Fi g. 6 shows the excitation circuit for the line control of the light strips and the associated summing stage. Like F i g. 6 shows, the summing stage contains ten transistors 751.4 to 751 /, and the excitation circuit contains ten controllable silicon rectifiers 761.4 to 761 /, which are connected to the light strips C1 to C19 according to FIG. 2 are connected via lines 721A to 721 / and 722.4 to 722 /.

For example, the circuit shown in FIG. 6 connected to the first controllable silicon rectifier 761 A contains lines 721,4 and 722,4 which are connected at a connection point 724 A to the anode of the rectifier. On the other hand, these lines lead to the second, outer ends of the first light strip C1 or to the eleventh strip CIl to Fi g. 7. The cathode of the rectifier 761.4 is connected to the common ground line G via a block resistor 766.4. The control electrode 778.4 of the rectifier is connected from the connection point 756.4 on the one hand via a bleeder resistor 768 A to the ground line G and on the other hand via a diode 774.4 with a line for the control voltage and finally from a connection point 775.4 via a diode 784 A. connected to the line /) to delete. The diode 774 A has its anode on the line, 4, and the diode 784 A has its cathode on the line /).

According to FIG. 6, line 721 A is connected to line 662 via a diode 840, 4, which is shown in FIG. 5 leads to winding 642 of multiple winding 546, diode 840 A with its cathode on

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Head 662 lies. The cathode of a diode 836, 4, these diodes with their cathodes are connected to the line 598

on line 721 A and connects it via a lying. This line is at one end 900 of the

Resistor 850 A with the line 671, which leads to the summing resistor 902, the other end with

DC voltage source 552 of FIG. 5 leads. In which the ground is connected. The voltage supply

Line 721.4 between point 832.4 and 5 589 is via resistors 886.4 to 886 / with the

836.4 diode is a diode 830A, the arrival collectors 884.4 to 884 / A 751 of the transistors

End 724 A of lines 721 ^ 4 and 722., 4 with the to 751 / and with the anodes of the diodes 894.4 to

The cathode of the diode 830.4 is connected, whose connection 894 / is connected.

or on the rectifier 761.4. The cathode of a The mode of operation of the line control is fol-Zenerdiode 858 ^ 4 lies at the resistor 850.4 and at io lowing: The by the measuring device in Fig is connected to the anode of a diode 866 A , which in turn transmits lines A and B and step at their cathode with the cathode of the next, connected to the controllable silicon rectifier 761.4 controllable silicon rectifier 761 B to 761 /. When there is 862.4 at each of the connection points. The anode of the Zener diode 858.4 and the diode 15 to 862 / and the one to the base of the transistor 751 / 866.4 are connected to the connection 862 A, from which a conductive conductor 872 / a direct voltage signal 872.4 via a resistor 874.4 is present to the base, the transistors 751.4 to 870.4 of the transistor 751.4 will lead. Exceptionally 751 / charged, so that the voltage leads the line 872 A from the connection point source 590 via the line 589 coming voltage 862.4 via a resistor 834 to the base 792 of a 20 voltages, the transistors and the first arrester further transistor 790 , where a capacitor 835 582 can go to ground,
and a further resistor 836 in parallel when the resistor 766 to B, of the transistor 790 and the rectifier 761 is connected with the B between the base 792, a direct-chip-ground line g. The cathode of the diode 866.4 voltage signal is present on all blocking resistors and the cathode of the second controllable silicon 25 is created at the Kahoden of the corresponding rectifier 761 B via a blocking resistor controllable silicon rectifier an oppositely directed 766 B on the ground line G. . This opposite-alIe controllable silicon rectifier 761 ^ 4 bis directed bias prevents the rectifier 761 / for the line control point from switching through when it receives a positive pulse on its control electrode of the last rectifier 761 / the same circuit 3 °. The controllable SiIiauf, with this last rectifier as a changeover switch, can only then be used for the next row. The control electrode 778 / th, when this oppositely directed preload of the controllable silicon rectifier 761 / lies above voltage, disappears from its cathodes. That means a diode 774 / on the line B, the anode indicating that only the first rectifier 761 ^ 4 is connected to the line B through the diode. The control electrode 35 is switched, even if a pulse at the same time on 778 / is also connected to the collector of the transistor of all control electrodes via the connected 790 of the NPN type, the emitter of which appears on line A until a positive pulse from the extinguishing line D is connected . If the switch is in the rest position with the same amplitude but in the opposite direction, line A is reached via the relay. If z. If, for example, the control station 834 and the connection 862,4 emits a positive stage of FIG. 4 via the line B a pulse bias voltage to the base of the transistor 790, the silicon connected to the line B is laid. As a result, the transistor 790 between its rectifier 761 B is not yet switched through, since its collector and its emitter are conductive and the cathode of the rectifier 761 B connects the control electrode 778 / with the line D. Voltage source 552 coming in the opposite direction -The circuit of the controllable silicon rectifier 45 directed bias is. This bias is ters 761 / contains diodes 830 / and 836 /. The via the line 671, the resistor 850 Λ and the anode of the diode 836 / is fed to the resistor Zener diode 858 A on the one hand. If, however, a positive pulse is supplied via the stand 850 / and on the other hand with the extinguishing capacitor line A , sator854, whose second plate is at the emitter of the controllable silicon rectifier 761 ^ 4 through transistor 790, as well as with the cathode of the 5 ° switches as if no opposing zener diode 858 / connected to the cathode. The anode of the zener-directed bias would be present. When the diode 858 / is connected to the rectifier via a resistor 874 /, the opposite base of the last transistor 751 / can be connected. The set bias voltage of the cathode of the anode of the diode 830 is connected in series with a resistance rectifier 761 B flow. The current going from the Zenerstand835 in the line 721 /, the diode 858 A via the line 55 is to the extent £ 62 with the diode 658 in FIG. 5 and limited to how the zener diode has a resistor for light strips C10 in FIG. 7 is connected. The current coming from the voltage source 552, the quenching capacitor 854, is connected to the line D in FIG.

Connection. The pulse emitted by the line B reaches the connection points 862 B to 862 / are in ⁶ ° to the control electrode of the controllable silicon equal-contrast to the connection 862 A not with the base judge 761 B, and there, however, no opposite of the transistor 790 connected. directional bias more at its cathode in the same way as in FIG. 5 is the line, this pulse causes the 582 in FIG. 6 connected to ground 245 and rectifier. The first two pulses cause, parallel to the emitters 880.4 to 880 / of 65, that the current in the base of the transistors 751.4 transistors 751 A to 751 /. Line 598 is up and 751 B is off. These transistors are blocked in parallel with the collectors 884.4 to 884 / the Tran. The current coming from the voltage source 590 via the sistors via the diodes 894.4 to 894 /, ie that line 589 goes through the diodes

1,548,579

894,4 and 8945 and causes an increase of two voltage intervals at resistor 902, whereby in to the same extent that at terminal 333 of the comparison stage in FIG. 4 applied voltage increased will.

In the following, the interaction of the FIGS. 4, 5 and 6 described circuits shown. The first pulse on line A switches the first controllable silicon rectifier 461A of FIG . 5 through. At the same time, switching on this rectifier causes the DC voltage at connection point 562.4 to fall below the value required for passage in Zener diode 558 A , which blocks further voltage passage. As a result, the voltage at junction 562.4 goes down to zero, transistor 451.4 is toggled, and the current in resistor 586.4 goes from first line 582 to second line 598 and causes a voltage increase in summing resistor 902. When the voltage disappears from terminal 562.4, there is no longer any oppositely directed bias voltage at the cathode of the second rectifier 461B, so that it can be switched over as soon as the first pulse appears in line B. Thus, this new pulse opens the rectifier 461B, turns on transistor 451 to B causes a renewed increase in voltage in the summing step. The alternating passage of pulses on lines and B allows a small amount of voltage to be applied via line 598 to the summing stage each time. When all silicon rectifiers 461.4 to 461E are switched through, this is equivalent to displaying the value 5 for the measured value.

The value of the resistors 586.4 to 586 E for the columns by summing the voltages is about 10 kΩ and is dimensioned so that when the control transistor is switched, a voltage unit is output to the summing resistor 902, which has a relatively small value of about 10 Ω. The voltage unit is one eleventh of the voltage increase due to the row control, which is applied by one of the resistors 886.4 to 886 / when its corresponding transistor is switched.

The resistance 586 F of the column control has a smaller value than the resistors 586 A to 586 E, but is higher than the values of the resistors for the row control 886.4 to 886 /. This resistance value is approximately 10 kΩ and is dimensioned so that when the control transistor 451F is switched, a voltage is applied to the summing resistor 902 which has six times the value of the voltage applied by the resistors for the column control 586.4 to 586 /.

In the same way, the resistors for the cell control 886.4 to 886 / have the same value and are smaller than the value of the resistor 586 F and have about 900 Ω, so that after switching the associated transistors, the voltage at the summing resistor 902 by eleven units increases compared to a voltage increase by one unit through the resistors 586 A to 586 E. The last resistor 8867 has a smaller value of about 90 Ω and is dimensioned so that when the transistor is switched, the voltage at the summing resistor 902 increases by a value that is about 10 times greater than the value applied by the resistors 886.4 to 886 /.

If now the transistors 451.4 to 451 £ according to FIG. 5 are gradually opened, they remain in this position until a pulse via the line B to the control electrode 478 F of the controlled silicon rectifier 461 F causes the silicon rectifier to be switched through. Then the voltage drop at the cathode causes the zener diode

ίο 558 F to the quenching capacitor 454, which is connected between the cathode of the Zener diode 558 F and the line C, and gives a negative discharge pulse via the line C and the diodes 484,4 to 484 E to the control electrodes of the controlled silicon rectifiers 461A to 461 E from, whereby these are blocked and a positive pulse arrives at a plate of the capacitor 454, which is connected to the line C as long as a negative impulse can reach the second plate of this capacitor as a result of the conductive silicon rectifier 461 F. At the same time as it is switched through, this silicon rectifier 461 F causes a delay in that it positively charges the plate 601 of the capacitor 600, which delays a positive charge via the resistor 466F and prevents the formation of a negative erase pulse. A negative pulse on the upper plate of the capacitor 454 causes a positive pulse on the lower plate, whereby the controlled rectifier 461 F is switched through and the first excitation process of the column control is ended.

When the controllable silicon rectifier 461 F is switched through, a voltage drop occurs at the resistor 466 F and causes a positive bias voltage at the terminal 562F, and on the base of the transistor 451E, which makes it conductive, the resistor 586 E can not supply a voltage unit to the summing resistor 902 and the transistor 451 E becomes conductive as long as the rectifier 461F is switched on.

In addition, the successive switching through of the controllable rectifiers 461, 4 to 461 E during the first part of the switching operations serves to connect the ground line G to the conductors 521 A to 521 E , so that according to FIG. 7 the light strips F1 to F 5 for the columns are excited to light up by the alternating current arriving via the line 669, wherein according to FIG. 5 the conductor 669 leads to a terminal of an AC voltage source 554, while the other terminal is connected to the ground via the conductor 582.

If the silicon controlled rectifier 461A are locked to 461 e through the circuit of the controllable rectifier 461F, the excitation of the phosphor stripes Fl to F 5 does not stop, but the through-connection of the controllable rectifier 461F causes a holding position. This is due to the fact that the light strips F1 to F 5 continue to emit light in that they continue to receive a positive half-wave from the voltage source 544, which can pass from the terminal 667 via the line 669 to one side of the light strips F1 to F 5 while the current from the other side via the lines 521.4 to 521 E, the diodes 540.4 to 540E, the line 542, the connection 634, the controllable silicon rectifier 461F, the resistor 466 F to ground 245, whereby the line

1,548,579

15 16

Lines 582 and 665 are switched to the opposite, which is done in the same way as terminal 663 of the voltage source 544 lead. Even for the first part of the excitation process, if a negative has been written on the light strips F1 to F 5 , the tive half-wave is gradually applied, the current comes from a terminal 900 of the summing resistor 902 on the span side of the strips F1 to F 5 applied via the line 669 to the 5 voltage units, the seven, eight, nine and terminal 667, while a positive current from the ten units correspond to the already applied terminal 663 via the lines 665, 582, the ground through the resistor 586 first six 245, the negative terminal of the power source 552, connect the voltage units.
Line 554, the resistors 550.4 to 550E, the connected rectifiers 461.4 to diodes 536 A to 536 E, the conductors 521.4 to 521 £ io 461D connect the lines 522.4 to 522 D with and the other side the light strips F1 to FS of the ground, so that the light strips F7 to FlO for flows. the fine display (Fig. 7) by the AC voltage when the controllable silicon rectifier 461F is excited to glow. The other end, which is switched through, is also the light strip F 6 winding 620 is excited to light up with the diode 638, the line 582, because a line 623, the 15 of the ground and on the other side with the diode from a connection of the Winding 620 goes out, 630, the connection 634 and the line 521F in turn by induction dissipate from the primary coil.

winding 666 during a half-wave of the alternating During a positive half-wave, which over the

current is excited and from the line 623 to a line 623 to one of the light strips F 7 to FlO

Side of the light strip F 6 leads, whereby that of the 20 arrives, which by switching through the corresponding

Rectifiers flowing back on the opposite side of the strip are excited to glow,

Current through the line 521F, the resistor 635, a corresponding current arises in the opposite

the controllable, connected rectifier lying connection via the lines 522 Λ bis

461F, to ground and to line 582 and thus to 522 D, the controllable, connected rectifier

second terminal of winding 620 leads. 25 ter 461Λ to 461 D, the ground, the line 582, the

As soon as a negative half-wave from the conductor 623 diode 638 and the winding 620.

A current goes from the above-mentioned capacitor plate to During a negative half-cycle

Luminous strips F 6 and to the negative end of the first connection in the manner already mentioned

Coil 620 reaches a current of which each of the light strips F7 to F10 according to FIG. 7 now goes

positive end of winding 620 to diode 630, to 30 via line 623 to winding 620, while a

Conductor 542, to conductor 521F, and to the phosphorus current from the other end of winding 620, the

fenF6. is positive at the moment, according to FIG. 5 for the diode

When controllable rectifier 461F is through- 630, to connection 634, to conductor 521F, to

is switched, also the one at the cathode of the controllable rectifier 461F, to ground, to on

Zener diode 558F removed voltage, so 35 the ground terminal of the DC voltage

that the bias at the base of the transistor source 552, to conductor 554, to the resistors

451F disappears, which blocks this, so that the 550.4 to 550D, to the diodes 536.4 to 536 D,

Resistor 586 F increases via diode 594 F to 528.4 to 528 D, to conductors 522.4 to 522 D and

The voltage at point 900 and on the cells of the light strips opposite to one another

Summing resistor 902 applies, which flows equal to six eleventh 40 F 7 to FlO.

The switching through of the controllable rectifier resistors 886.4 to 886 / for the line control 461F according to FIG would increase at the voltage for the column control base of the transistor 409, so that the first of which is achieved by switching the controllable 45 two switching stages through corresponds to the circuit rectifier 461F and thus the five in a shunt with the lines, 4 and B voltage units of the voltage increase of the column on the one hand and via the diodes 506 and 508 and the ten control are replaced, which were caused by the resistor 490 with the ground line G on the other hand would be 586.4 to 586 E. to lay. The transistor 490 is open when the 50 rectifier 461 £ at the end of the second Anist and the rectifiers 461A to 461 £ at the end of the energizing process of the excitation circuit 221 of Fig. 5 of Fig. 5 of the first part of the switching process is switched through . The lines A and B can now cause the pulses emanating from the voltage source 552 to be sent to the excitation circuit for the bias voltage that is sent to the cathodes of the rectifier line control in FIG. 6 transferred. This goes so 4615 to 461 £ again bias voltages to 55 long as to bring the controllable rectifier 461F through this into the holding position, and that this is switched and the voltage drop in the resistor bias voltages across the Zener diodes 558.4 to 466 F is opposite Preload 558 D, as already described, arrive. The transistors to the base of the transistor 451 E via the connectors 451, 4 to 451 D are simultaneously conductive, dung 562 £ so that it remains conductive,
and the resistors 586.4 to 586 E are temporarily put out of operation. It is particularly to be noted for the column control according to the illustration of th that the Zener diode 558 £ again in the operating mode, so only six controllable silicon states are set back and a bias voltage rectifier is required, which is emitted through the Querverbindunan the terminal 563, which also reaches the gene in the circuit of FIG. 5 and the Haltestel base of the transistor 490 and makes this conductive 65 ment with the controllable rectifier 461F. connected circuit is effected, which is something of

If the other circuits differ in the second part of the excitation process,

controllable rectifier 461.4 to 461 D through- If the tenth unit of the measured value as a pulse

1,548,579

17 18

Bias voltage through the Zener diode 858.4 is required in the excitation circuit for the column control, all the light strips of the column connection point 862.4 are located and from there the base lights up. The silicon rectifier 461F and 461.4 of the transistor 790 is led so that this is switched through, and through the switch-through is conductive, like the control electrode 778 of the rectifier 461 E , the transistor 490 5 rectifier 7617 via the conductive transistor opened, so that from now on the pulse is connected to line D to line control 790. If it is used for the purpose of activating further display elements, controllable rectifiers 761 A are to be controlled. Switching the DC through, the bias voltage at point 862 A and rectifier461 £ disappears when the second excitation at the base of transistor 790 is terminated, so that the Transiganges does not cause an increase in the control voltage, io disturb 790 is switched over and that the control electronics are switched over by the voltage drop in the Resistor 466 F trode 778 / of the rectifier 7617 from the line and the resulting permanent bias voltage D is switched off,
tion is effected. If, according to FIG. 6, the rectifier 761.4 to

If, on the other hand, display elements are to be deleted again 7617 via the alternately via the lines, 4

then a cancellation pulse must be switched through to incoming pulses via lines C 15 and B.

arrive, which bypass rectifiers 461.4 to 461F, causes a subsequent pulse in the line.

switches and the grain B from the voltage source 552 via the diode 7747 that the silicon equilibrium

Mende voltage is switched through again at the connection points judge 7617. As a result of

562 A to 562 F, which causes the transistors to reduce the voltage at the cathode of the Zener

451.4 to 451F are energized again 20 diode 8587 discharges the capacitor 854 and

den and reduce the total voltage. emits a negative impulse which

The excitation circuit for the cell control is in the device D and via the diode 784.4 to 7847 to the

essentially the same as the excitation circuit for the gap silicon rectifiers 761.4 to 7617 and the

control. It can be seen, however, that the blocking rectifiers 761.4 to 7617 block. This erasure

tion of one of the transistors 151A to 7517 according to 25 impulse cannot be applied to the controllable silicon equalization

Fig. 6 an increase in the voltage drop in the rectifier 7617, because its control electrode

Summing resistor 902 has the consequence that the eleven span 7787 has already been switched off by transistor 790

units of the column control corresponds and has been.

represents a voltage equal to eleven voltage If the controllable rectifier 761.4 when loading

units of the measurand. 30 end of the first part of the excitation process

During a positive half-wave, the current flows off by switching on the rectifier 7617-

from the terminal 667 of the current source 544 is switched via, the transistor 790 is again

Line 669 to a connection of the light strips by the increase in the positive voltage on

Cl to ClO, as shown in Fig. 7, when the connection point 862 A via the Zener diode 858.4

opposite terminals of this strip are biased over 35, creating the controllable rectifier

the lines 721.4 to 7217 with the ground line G 761.4 are available for a new excitation process

connected, which is the case when it stands.

controllable silicon rectifier 761 ^ 4 to 7617 In the first part of the excitation process this causes are switched through and thus the ground via the step-by-step switching through of the controllable silicon lines 582 and 665 on the other terminal of the 40 rectifiers 761.4 to 7617 that each resistor Voltage source 544 is present. 886.4 to 8867 stores eleven voltage units, see above

During a negative half-wave the flow results in a total of 99 voltage units. Current from the connections of the light strips C1 The switching through of the controllable silicon leveling to ClO via the line 669 to a terminal of the richters761 / causes the controllable DC voltage source 544 and a positive current to flow of the other terminal of the voltage source 544, the resistors 886.4 to 886 / out of operation via the line 582 to ground, the other being set because the transistors 751.4 to 751 / end with the ground, the DC voltage source 552, back into the Have been switched on, the line 671, the resistors 850 A to 850 /, the resistor 886 /, which, as already mentioned, with the diodes 836.4 to 836 /, the lines 721 A to 50, the transistor 751 / and the controllable silicon 721 / and the opposite cells of the luminous rectifier 761 / is connected, is selected so strip Cl until ClO is connected. that when the rectifier 761 / is switched on

The excitation circuit shown in Fig. 6 acts in a voltage drop corresponding to 110 voltage units.

slightly different than that in Fig. 5 is applied to the summing resistor 902.

Circuit. At the connection point S62A, which is 55 In the second part of the excitation process, everyone

between the anode of the Zener diode 858 A and that of the controllable rectifiers 761.4 to 7617 again

The anode of the diode 866 A is not only connected through and brings about its associated

Conductor 872.4, the resistor to the base of transistor 751A in turn eleven further voltage units

summing stage for the line control leads to the summing resistor 902. thereby

but this conductor 872.4 also goes in the opposite direction - 60 results in a total of 209 voltage units,

set direction via a resistor 834 during the second part of the excitation process

Base of another transistor 790 of the NPN type. causes the simultaneous switching through of the controls Collector of this transistor 790 is the glow with the baren rectifier 761 / and 761.4 Control electrode 778 / of the controllable silicon equal strip C11 by means of the line 645 richters761 /, while its emitter is connected to 65 alternating currents applied by winding 642 (Fig. 5)

the line D is connected. voltage. The winding 642 is inductive to the

The circuit is as follows: connected in front of the primary winding 666 and wound in such a way that the silicon rectifier 761 A is switched through via the line 645 to a positive half-wave

Claims (28)

1548 579 19 20 Connection of the light strip arrives C11 and that the controllable silicon rectifier 761A is the return line is excited via the opposite side. The eleventh display element is with circuit through line 722 ^ 4, the rectifier of the second row of photosensitive elements 761 A, the ground line G to ground and then via PC 12 to PC 22 via line 252 (Fig. 2) the line 582 (Fig. 5), the diode 654 and the 5 bound and finds them already under voltage. Another connection of the winding 642 takes place. going ahead. During a negative half-wave of the supply Since the comparison voltage is still positive If current comes from the first connection of the voltage, a strong signal is emitted which indicates the Luminous strip C11 via line 645 to the second controllable silicon rectifier 761 B of the the other connection of the winding 642, from the other io in FIG. 6 activates circuit shown. Connection of winding 642 through diode 658, which means that there are 22 voltage units and Line 662, line 721 /, the controllable one, still by switching on the third silicon connected rectifier 761 / and the ground rectifier 761C 33 voltage units of the line G to ground, displayed via the ground terminal of the display elements 226. DC voltage source 552, the conductor 671, the 15 Da the comparison voltage between the points Resistor 850A ', diodes 836A and 830vi and 313 and 333 still remain positive, will be a new one, the line 722 Λ, which is emitted to the oppositely strong impulse, which temporarily the the connection of the light strip ens C 11 leads. fourth controllable silicon rectifier 761 D through- The controllable silicon rectifier 761 B bis switches. This in turn increases the amplitude of the 761 / in FIG. 6, 20 signals at the connection point 333 are gradually larger than the and switched through to reduce the light strip amplitude of the signal at point 313, since the thermal C12 to C19 if necessary for light emission element 210 only the growth of 36 units to stimulate. and because 44 units have already been displayed The light strips of FIG. 7 receive the to be. The comparison voltage thus becomes negative. Light excitation required alternating current from the 25. Thus, an erasing pulse appears, which is the fourth Voltage source 552 shown in Fig. 5 via the rectifier 761 D of the line control (Fig. 6) Lines 623, 645 and 669. and all of the controllable silicon F i g. 9 corresponds to a superposition of FIG. 7, rectifiers 461 of the column controller turns off, and 8, wherein the scores, B and C of FIG. 8 Thus, the phase of the comparison voltage returns the points Al, Bl and Cl of F ig. 7 together- 30 again, since the display only omits 33 units. This is where the photosensitive speech is located. Positive pulses with a small amplitude equal element PC 1 exactly above the light strip long via lines A and B to the excitation circuit Fl for the first column and the light strip C1 device for column control, until three more signals for the first line, etc. As can be seen the light-pointing elements of the display device illuminates sensitive elements and the light strips are op- 35, so that a total of 36 units are displayed, table-coupled to one another to produce the arrangement 220 in the display device according to the invention. F i g. 9 also shows the electrical connections between the display elements 226 and and at the same time cause a holding position, whereby the number of switching elements of the light-sensitive elements 224 is reduced. The thermocouple 210 in FIG. 4 measures a temperature increase from 0 to 36 ° C due to the controllable silicon rectifier. Thus, at 461F in the excitation circuit of FIGS. 5 and 761 / connection point 313, a strong voltage increase occurs in the excitation circuit of FIG. 6 possible. A take. Between the connection points 313 and pulse, the controllable silicon rectifier 761/333 there is a voltage difference, and one opens, blocks the controllable rectifier 761 ^ l until the AC voltage signal with a certain phase goes 45 761 /, but without the rectifier of Fig. 5 or to Preamplifier phase discriminator 219, which the light excitation of the light strips Fl to FlO and voltage z. B. amplified five hundred times. to influence the light strips C1 to C 9, which beWhen the control command is positive, that is, when they are already excited. At the same time, however, the voltage at point 313 is higher than the voltage light strip C 10 is excited to shine, as long as at point 333, the phase discriminator 219 outputs a 5 ° the controllable silicon rectifier 761 / passed signal is switched via line 339 to the control stage. F i g. 4, which sends the signal over line A to the hold position is sent through diodes 528 to control electrode 478 A and the first control F i g. 5 and through diodes 830 in FIG. 6 causes the silicon rectifier 461., 4 of FIG. 5 to be located in the lines 521 and 721 and interconnected. The excitation circuit of FIG. 55 can thus prevent the voltages in their associated voltage unit from adding up and changing the subsequent circuits until the rectifier converts the controllable silicon rectifier 461 B to 461Λ to 461 E or 761 A to 761 / by means of pulses Toggle reception of the next pulse. be locked, which at the same time the rectifier Since the light strip Fl is switched through by the first pulse 461F and 761 /, is stimulated to shine, it switches the light 60 sensitive element PC 1 um, makes it conductive, claims: whereby this in turn the first display element ■ EL 1 controls to generate light. 1. Control circuit for a device with The light excitation of the display elements 226 er electroluminescent display elements follows gradually up to the tenth element. ELU 65 which is made of an electroluminescent light-emitting element becomes light-sensitive due to the light-sensitive element PC 11 omitted from the existing arrangement controlled, the elements illuminated by the light strip C1 are assigned, one of which is associated with each is, the strip C 1 by switching through one of the electroluminescent display 1 548 elements for its control is connected, characterized in that electric light strips (F, C) are arranged in rows and columns and a light-sensitive element (PC) is provided at the intersection points that the light-sensitive elements (PC) of the first row directly the voltage source (243) and the light-sensitive elements of each subsequent row are connected to the voltage source (243) via the last light-sensitive element (PC 11 ...) of the previous row and that a control network is used to excite the light strips (F, C) is provided in which the voltage measurement value to be displayed is applied directly to a comparison stage (216) and the voltage exciting the light strips is applied via a summing stage (222). 2. Control circuit according to claim 1, characterized in that the electric light strips (F, C) are light capacitors. 3. Control circuit according to claim 1 or 2, characterized in that the electric light strips (F, C) are controlled by monostable switches (461.4 to 461F; 761.4 to 761 /), of which the ones used to control the columns forming Light strips (Fl to FlO) serving switches (461A to 461F) for activating a light-sensitive element of a column in an excitation circuit for the column control (Fig. 6) and the light strips (C 1 to C19) which are used to control the light strips forming the rows Switch (761 A to 7617) for activating all light-sensitive elements of a line in one. Activation circuit for the line control (F i g. 7) are combined. 4. Control circuit according to claim 3, characterized in that in each case a switch for several Light strips (F, C) forming columns or rows are provided. 5. Control circuit according to claim 4, characterized in that the number of switches provided for N electrical light strips is equal to JV. .,, JV + 1. .
- ₂ - + 1 or - ^ - ' ^lst - 6. Control circuit according to claim 1 and 3, characterized in that the summing Stage (222) to the excitation circuit (221) for row and column control of the light strips connected. 7. Control circuit according to claim 3 and 6, characterized in that the summing Stage (222) of the switches (461Λ to 461F; 761.4 to 7617) is activated. 8. Control circuit according to one of the preceding claims, characterized in that the electroluminescent display elements (EL ) connected to the light-sensitive elements (PC) are arranged in a light column arranged separately from the matrix (234) consisting of the light strips and light-sensitive elements. 9. Control circuit according to claim 8, characterized in that the electroluminescent display elements (226) are connected directly to a light-sensitive element (PC) on the one hand and jointly to a device (228) for brightness adjustment on the other hand. 10. Control circuit according to claim 9, characterized characterized in that the electroluminescent display elements (226) over the one diagonal a diode bridge (256) are connected to earth and the other diagonal via a potentiometer (225) is connected to a DC voltage. 11. Control circuit according to claim 1 and 3, characterized in that a control stage (218) consisting of a phase discriminator (219) and a pulse generator stage (G, H) is provided between the comparison stage (216) and the excitation circuit (221). 12. Control circuit according to claim 11, characterized in that an alternating voltage is formed in the comparison stage (216) from the voltage measurement value to be displayed and the summing voltage supplied by the summing stage (222), the phase position of which is different depending on the sign of the comparison value of voltage measurement value and summing voltage , and; that the alternating voltage is converted into pulse trains which, depending on the phase position, are connected to lines (4, 4, B) to excite the light strips or to lines (C, D) to erase the light strips. 13. Control circuit according to claim 11 and 12, characterized in that of the pulse generator stage (G) for the excitation circuits of the ■ Column and row control via the lines (A, B) alternately pulses of the same frequency are transmitted to excite the light strips in the columns and rows, while from the pulse generator stage (H) for the activation of the column control via the line (C) pulses for erasing and for the activation of the cell control via the line (D) time-delayed pulses for erasing are given. 14. Control circuit according to claim 3, characterized in that the monostable switches (461A to 461F; 761A to 7617) are controlled semiconductor rectifiers, their cathode to earth, their control electrode (478, 778) to earth and via a diode (474, 774) to a line (A, B) to excite the light strips and a further diode (484, 784) to a line (C, D) to erase the light strips and their anode to at least one light strip, as well as via two series-connected diodes (630 , 528; 658, 830) to a secondary winding (620, 642) of a transformer (546), via a series connection of a resistor (550; 850) and two diodes (536, 528; 836, 830) to a DC voltage source (552) and is connected to the cathode of a Zener diode (558; 858). 15. Control circuit according to claim 14, characterized in that with the exception of each last switch (461F; 7617) of the excitation circuit for the light strips in the connection between the anode of the controlled semiconductor rectifiers and the secondary winding (620; 642) of the transformer (546) has a third diode (540; 840) in series with and between the two Diodes is switched in opposite directions. 16. Control circuit according to claim 14 or 15, characterized in that the anode each Zener diode (558, 858) except for the penultimate Zener diode (558 E) of the excitation circuit for the Column control with the control electrode of a semiconductor switch (451, 751) in the summing 1 548 the stage (222) and apart from the last Zener diode via a diode (556; 866) to the cathode of the next following controlled semiconductor rectifier is connected. 17. Control circuit according to claim 5, 14 and 16, characterized in that the anodes of the controlled semiconductor rectifier apart from the last one in the excitation circuit for the Column and row control are also connected to an additional light strip each. 18. Control circuit according to claim 14 or one of the preceding claims, characterized characterized in that each light strip with its second connection either to the primary winding (666) or to a secondary winding (620; 642) of the transformer (546) is. 19. Control circuit according to claim 18 or one of the preceding claims, characterized in that the control electrodes of the controlled semiconductor rectifiers are alternately connected to a respective line (A, B) for excitation, all control electrodes of the controlled semiconductor rectifier in the excitation circuit for column control to the line (C ) and all control electrodes of the controlled semiconductor rectifier in the excitation circuit for line control are connected to the pulse-delayed line (D) for erasing. 20. Control circuit according to claim 14 or one of the preceding claims, characterized in that the controlled semiconductor rectifier in the excitation circuit for the column control is followed by a transistor (490) whose first connection to ground, whose second connection to the lines (A, B) for excitation and whose third connection is connected in parallel with the anodes of the Zener diodes (558 E, 558F) belonging to the last and penultimate controlled semiconductor rectifier. 21. Control circuit according to claim 14 and 16 or one of the preceding claims, characterized characterized in that the cathode of the last Zener diode (558 F) in the excitation circuit for column control connected via a capacitor (454) to the line (C) for erasing is. 22. Control circuit according to claim 14 or one of the preceding claims, characterized characterized in that the cathode of the last controlled semiconductor rectifier (461F) in the Activation for the column control via the parallel connection of a resistor (466F) and a capacitor (600) is connected to ground. 23. Control circuit according to claim 14 and 16 or one of the preceding claims, characterized in that the control electrode of the last controlled semiconductor rectifier (761) in the excitation circuit for the line control to the anode of the Zener diode belonging to the first controlled semiconductor rectifier (761 ^ 4) ( S58A) is connected via the collector-base path of a transistor (790), the emitter of which is connected to the pulse-delayed line (D) for erasing and to a capacitor (854) connected to the cathode of the last controlled semiconductor rectifier (7617). 24. Control circuit according to claim 16, characterized in that the semiconductor switch (451; 751) with its one connection in each case via a resistor (586; 886) to a direct voltage source (590) and parallel to this via a diode each (594; 894) are connected to a common summing resistor (902) while the other terminals of the semiconductor terminals are connected to a line (582) whose one end grounded and the other end via diodes (638, 654) to the connection point between the two secondary windings (620, 642) of the transformer (546) is connected. 25. Control circuit according to claim 24, characterized in that the connection point of the summing Resistance (902) is connected to the comparator stage (216). 26. Control circuit according to claim 16 and 24, characterized in that the cathode of the last controlled semiconductor rectifier (461F) in the excitation circuit for the column control is connected to the control electrode of the penultimate semiconductor switch (451 E) of the summing stage (222). 27. Control circuit according to claim 24, characterized in that the values between the Semiconductor switches (451; 751) and the DC voltage source (590) lying resistors (586; 886) corresponding to the desired increase in that to be fed back to the comparison stage (216) Voltage when activating the semiconductor switch are determined. 28. Control circuit according to claim 27, characterized in that the values of the resistors (586, 886) in the summing stage for the column control as well as for the row control are equal to each other except for the last resistor (586F; 886F), the value of which is as follows is determined that the increase in the voltage to be returned when activating the associated Semiconductor switch is equal to the voltage rise times of one of the other resistors the number of semiconductor switches in the summing stage for column or row control ^ tion is generated. For this purpose 3 sheets of drawings 009 532/105