DE2444643A1 - ELECTRIC SPARK GENERATING DEVICE, E.G. FOR LIGHTERS - Google Patents

Description

Dipl.-Ing. H. MITSCHERLSCK Β —8 MONKS

Dipl.-Ing. K. GUNSCHMANN SteinsdorhtraB »10

Γ \ ι ι »# lsS \ nr-tr-n ^ (089) * 2966 64

Dr. rer. nat. W. KORBER
Dipl.-Ing. J. SCHMIDT-EVERS

PATENT LAWYERS 18 »September

MANSEI KOGYO KABUSHIEI KAISHA.

3035, 1-chome, Kamiaoki-cho 2444643

Kawaguchi-shi , Saitame, Japan

Patent application

Electric spark generating device, e.g. for lighters

The invention relates to electrical spark generating devices for ignition devices, e.g. lighters, and relates in particular to an electrical spark generator for such ignition devices, in which there is an electrical arrangement, to which either one Diode connected to an inverter, or a DC-to-DC converter connected to a DC power source, also a discharge circuit with a capacitor and a silicon controlled rectifier Step-up transformer and a! Spark gap. At this Device is connected to the inverter either with the help of Diode or with the help of the direct current / direct current converter a half-wave voltage is generated. The condenser is charged with the help of this half-wave voltage, and the electrical charge of the capacitor is increased with the help of the Controlled silicon rectifier briefly fed to the step-up transformer. The ones on the primary side of the upward Transformer appearing voltage, which is generated by this measure, is stepped up so that on the one with the secondary side of the step-up transformer. spark discharges occur in the bonded spark gap.

The invention has for its object to provide an improved electrical spark generating device of the above

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to create said type for ignition devices; Furthermore, the invention is intended to provide an electrical spark generating device for ignition devices, which is provided with a reliably working circuit which achieves a long service life. is suitable, to generate successive sparks by discharging a high voltage zn.

To achieve the above object is achieved by the invention, an electric spark generating device for ignition devices, created been _s having an inverter, further comprising a connected to the inverter in series fashion, an output connected to the inverter discharge circuit with a condenser and einas controlled Silisiumgieiehriehter, both , are connected in parallel to the inverter _9, a step-up transformer with a Frimärseite and a secondary side j wherein the primary side of the step-up transformer is connected to the discharge circuit in Beilie ₉ a with the Sekundsrseite up transformer verbuncen © radio link from Ergeugea of Funkea by di © discharge of a high voltage, and one. firogrammable double base transistor ₅ which is opened at its Aaod © and connected to the control electrode of the controlled silicon rectifier via its cathode ₉ whereby the control electrode fi®s programming «bai? © s double base transistor with the? The anode of the silicon controlled rectifier is connected _e

With this invitation ¹ !! of the invention it is expediently in the form of a? SeihensclialtiiBg a © device for applying a constant voltage ₉ sB _B a © 2en @ rdiode, a controlled Silisiragleiehrieh © !? or the like between the power source nnä & ®m capacitor aii2uorder ₉ so that then ₉ when the energy source has decreased to a predetermined value _s the setup sum adjustment of a constant voltage, the voltage sees more from the power source to the capacitor, if necessary kana the device for regulating a · constant voltage connected to the capacitor via the DC / DC converter

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The invention and advantageous details of the invention are explained in more detail below ^{with reference to schematic drawings of exemplary embodiments.} It shows:

Fig. 1 shows an embodiment of an ignition circuit, "in which a programmable double base transistor is used to trigger a silicon controlled rectifier;

FIG. 2 shows the circuit of a further development of the circuit according to FIG. 1, in which, in addition, a device for regulating a constant voltage is present;

3 shows a further embodiment of an ignition circuit in which there is no use of a direct current / direct current converter is made, and in which there is also a Zener diode; and

Fig. 4- Another embodiment of an ignition circuit, in which the Zener diode of the embodiment according to FIG. 3 is replaced by a controlled silicon rectifier.

In the circuits shown in FIGS. 1 and 2, there is an electrical power source for the ignition circuit in question in the form of a battery 1, to which a DC / DC converter 5 of known type is connected. The converter 5 includes a transistor 2 for carrying out switching operations, a transformer 3 »which simultaneously acts as Resonant circuit works, as well as a diode 4-, which causes a half-wave rectification. With the DC / DC converter In the embodiments according to FIGS. 1 and 2, 5 is a capacitor 6 for storing an electrical charge connected in parallel, with which a controlled silicon rectifier 7 is connected in parallel. The primary side of the upward stransformatorä 8 is with the controlled silicon rectifier 7 connected in series. On the secondary side of the Step-up transformer 8 has a spark gap formed by two electrodes 9 and 10. To the Control electrode of the controlled silicon rectifier 7 a programmable double base transistor 11 is connected in each case, which is a controlled silicon rectifier with a negative type control electrode

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acts ", The programmable double base transistor 11 is connected so that its anode is open ₉ while its cathode is connected to the control electrode of the controlled silicon rectifier 7, and that the control electrode of the programmable double base transistor is connected to the anode of the controlled silicon rectifier 7" ^ waa? The circuit of the programmable double base transistor 11 differs ironically from the usual circuit, but with the arrangements according to FIGS. 1 and 2 it is possible to increase the trigger voltage of the controlled silicon rectifier 7 from a value of a few YoIt to a value which is considerably higher and is about 100V. Therefore the trigger voltage of the controlled silicon rectifier 7 can be kept at a high value «

As a result, _s that shortens a beneficial effect insofar erzieltj as it is possible to cause at the spark gap spark discharges with a higher voltage ,, but there is a disadvantage of the arrangements of Figure _s 1 and 2 in the life of the silicon-controlled rectifier 7 "To the life To extend the controlled silicon rectifier 7, a protective resistor 12 is arranged between the anode of the rectifier 7 and the control electrode of the programmable double base transistor 11, according to FIGS a resistance value of several kilohms to have.

In the circuit according to Fig _o 2 shows a device 13 'for example is a Zener diode, sum Einregeln a constant voltage on the anode side via a switch S in series with the negative terminal of the battery 1 and on the cathode side via the DC / DC converter 5 in Series connected with the capacitor 6 * According to FIG. 4, it is possible to control the device 13 in order to regulate a constant voltage by means of a controlled silicon rectifier. As long as the energy of the battery exceeds 1 © inen '«jcr'fcestiaarcen value, the voltage of the battery is the capacitor 6 through the

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Device 13 for regulating a constant voltage is constantly supplied. As soon as the energy of the battery 1 drops below a predetermined value, the device 13 for regulating the constant _f 3voltage dom capacitor 6 no longer increases the voltage of the battery this © device switched in Bein®

When the circuit is switched on, the voltage of the battery 1 is applied to the direct current / direct current converter f>, which increases the voltage. «The capacitor 6 is charged with the half-wave voltage generated by the direct current / direct current converter 5. If the voltage of the capacitor 6 reaches a predetermined value, the silicon-controlled rectifier 7 is brought into its conductive state ₉ so that the electrical voltage of the capacitor 6 is quickly discharged via the rectifier 7 and reaches the primary side of the step-up transformer 8 »The to the primary side of the step-up transformer 8 applied voltage induces in the Selim & är-wieklung of this transformer a higher voltage «. This voltage is discharged through the spark gap formed by the two electrodes 9 and 10. At the same time, the controlled silicon rectifier 7 is switched off ο In this operating mode, the processes just described are repeated until switch S is opened again »

As mentioned, the programmable double base transistor 11 comes as a trigger device for the controlled one Silicon rectifier 7 s © to the effect as it is determined by it is that this transistor is open on its anode side, that it is on its cathode side to the control electrode of the silicon rectifier 7 is connected, and that the control electrode of the transistor 11 with the anode of the Silicon rectifier 7 "is connected. In other words, the trigger voltage of the controlled silicon rectifier 7» which when using a trigger diode of a known type about ' Would be 50 V, can be increased to about 100 V if

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sau the Srlggar-diöde by the program! ®rbarsn double-based: eansis "feo.i? 11 replaced <, This has sur iOlg © ₉ that higher voltage is discharged at the ITunkenstrseke © in® and ice fuel is reliably healed u-srden kasiic request is the silicon = "gieiötaielitsr 7 protected by its As.od @ and the electrode of the double base transistor 11 arranged resistor 12, so that the? silicon guide bar not only works perfectly", but also © is © long © when used r ignition circuit © rreieho

3? Ig ο 5 ttad ¹ S- show execution forii © n @ 2? £ ia.dO, ngs according to @ 3 Zündsclialtiing © ii _ö "bei dsnen @ia g © st en® xt θ 5? Silignagleieeldiert 23 with one battery 21 parallel @ lg @ s © lialtet is »Di® irimärseite © ia @ s infwärtsstransforiiators 24 is the same as d®® SiliainE.s? ichter 23 in Eeiii © geseiialt®t _c with d © E · Sekua = därwickleag of the upward transformer 24 siacl swai © iae ^ wakenstSQGlzQ forming © Elelrtsoclsa 25 ^ Hd 26 ir @ 3? bu: ad @ s. _e In Sfceuerlsr-ois de / :; Silizi ^ iagleiGhr-iehterg 2J ^ is a® cowardly diode 27 eiagGsenaltetc Zwisob ^ ad @ i? positi ' ^: »© s. Eleaa © the battery 21 imci d © m Kcadensatos 22 lisgsn aia. Switch 28 iiiid sine- daait ia Keike switched Senor & iode = · 2 $ ο Furthermore r.wisehen the? Battery 21 and the switch © r 28 © i clom SiliFiitiiEgi.eiehrieliusr 23 aüdarerse-lts @ia. ^ Tand E for & lim Zenesdiod® 29

lip η 4 seigt eia © Schaltiiag ₉ "bsi d © s? dia Zeacssdiode 29 according to S ¹ IiJo 5 dB.i ^r eh a stauerta SiliaiiJMgleiehrdcb.ter 30 srse-tzt is ο until control electrode® d @ s Silisiraaglaichrioliters 3 is ITb ©; ^ © iiaea Bsgslwidsrstand 31 alt dar positiYOB.Hemme de battery 21 wsiraaÄeBo With d @, r ignition switch ^ according to dar Erfia ~ dang @ it is possible to use ₉ Yarscliiedsn® devices to regulate a constant voltage instead of the Zeaerdiöd © 29 according to. Fig «3 ' öswo of the controlled Silizumgl © i © hricht @ rs JO aacJa J? 'ig _o 4- gu

If the switch 28 is closed ^ © di Zener diode 29 is turned on including occurrence of a predetermined voltage to charge the EoadenseitoE ¹ 22 © it di @ s © r Sparaiung, Once the voltage AESS aiafgeladeneia capacitor 22 ein®η predetermined value triggers the erreiehtj to the Control electrode of the

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Silicon rectifier 23 connected trigger diode 27 the controlled silicon rectifier 23, whereupon briefly a current is supplied to the primary winding of step-up transformer 24 Secondary winding of step-up transformer 24 increased so that a spark discharge takes place at the spark gap. If the strength of the current supplied to the silicon rectifier 23 falls below the hold value, the Silicon rectifier returns to its non-conductive state. These processes repeat themselves constantly, with further discharge sparks are generated at the spark gap, until the switch 28 is opened again. In contrast, it reaches that of the control electrode of the controlled silicon rectifier 4 supplied voltage has a value which is a predetermined Exceeds the value, the controlled silicon rectifier 30 is switched on, whereupon the ignition circuit according to Fig. 4 works in the same way as that of Fig. 3. Has the voltage of the battery 21 as a result of longer With use or as a result of aging it has decreased to a certain value, the voltage of the battery is the capacitor 22 is no longer supplied, since the device 29 or 30 for regulating a constant voltage takes effect comes. This proves to be advantageous for the user of the circuit, as it draws his attention to the fact that that it is time to replace the battery 21 with a new battery.

Expectations;

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Claims (8)

-s- EXPECTATIONS nJ electrical spark generator for ignition devices, E.g. lighters, characterized by an inverter (2, 3) »one in series with the inverter switched diode (4), a discharge circuit connected to the inverter with a capacitor (6) and a controlled one Silicon rectifier (7) »both of which are connected in parallel with the inverter, with a step-up transformer (8) a primary side and a secondary side, the primary side of which is connected in series with the discharge circuit, one on the secondary side of the step-up transformer connected spark gap (9 »10) for generating sparks through the Discharge of a high voltage as well as a programmable double base transistor (11) which is open at its anode, whose cathode is connected to the control electrode of the controlled silicon rectifier, and its control electrode is connected to the anode of the controlled silicon rectifier ο 2. Apparatus according to claim 1, characterized in that between the control electrode of the programmable double base transistor (11) and the anode of the controlled silicon rectifier (7) © in protective resistor (12) is arranged. 3. Electric spark generator for igniter directions, e.g. lighters, characterized by a battery (1), one connected to the battery DC / DC converter (5) with a transistor (2), a transformer (3) and a half-wave rectifier (4), one connected in parallel with the DC / DC converter Discharge circuit with a capacitor (6) and a controlled silicon rectifier (7) »a step-up transformer (8) with a primary side and a secondary 509814/0333 side, whose primary side is in series with the discharge circuit is connected, one to the secondary side of the step-up transformer connected spark gap for generating sparks by discharging a high voltage, a programmable one Double base transistor (11), which is open at its anode, the cathode of which with the control electrode of the controlled Silicon rectifier is connected, and its control electrode to the anode of the controlled silicon rectifier is connected, and one between the control electrode of the programmable double base transistor and the anode of the controlled silicon rectifier arranged protective resistor. 4. Apparatus according to claim 3 »characterized in that between the battery (1) and the capacitor (6) a device (13) for regulating a constant voltage is arranged. 5. Apparatus according to claim 4, characterized in that the device for adjusting a constant voltage of a ^ enerdiode (29). 6. Apparatus according to claim 4, characterized in that the device for adjusting a constant voltage a silicon controlled rectifier (30) whose control electrode is via a level resistor (31) is connected to the battery (21). 7. Apparatus according to claim 4, characterized in that the battery (1) has a protective resistor (14) is connected in Heihe for the device (13) for regulating a constant voltage. 8. Electrical spark generating device for ignition devices, e.g. lighters, marked by a battery (21), a discharge circuit with a capacitor (22) and a silicon controlled rectifier (23), both of which are connected in parallel with the battery, one in the control circuit of the controlled silicon rectifier arranged trigger diode (27) for triggering the controlled 509814/0333 - ίο - Silicon rectifier, step-up transformer (24) with a primary side and a secondary side, its primary side is switched to None with the discharge circuit, one connected to the secondary side of the step-up transformer Spark gap for generating sparks by discharging a high voltage, one placed between the battery and the capacitor and connected in series therewith Device (29; 30) for regulating a constant voltage and one with the device for regulating a constant Voltage series-connected protective resistor (R). The patent attorney: 509814/0333 Blank page