DE2303168A1 - ELECTRONIC DEVICE FOR GENERATING HIGH VOLTAGE PULSES, IN PARTICULAR FOR GAS LIGHTERS - Google Patents

Description

Patontanv.-Slte

Dipi. Inc C. W. Mlao.

d; _p i. ii-g. C _1st Kodi 2303158 Jan. 23

Df .- ^! -: -. i: Lc! Ch

8 Γ «-> · .-. :: -. 3ΐί 2

Heufingerstf. a. Valley. 7.40276

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Henri Edouard Frangois Karle COURIER de ifcoS

Che device for the suction "of pulses of high Tension? especially for gas lighters

This invention relates in particular to the devices for generating high spending pulses an electronic ignition device with a spark gap for Generation of sparks between its terminals and a source of electrical energy for supply, this device for Ignition of a flammable gas is provided, in particular for Gas lighters or lighters which contain such electronic ignition devices and in which the spark gap is arranged in the cows of the -Bi-enners.

In known devices of this type, which are e.g. 1 392 983 one and the same capacitor is charged and discharged. These devices therefore generally require dry equipment high voltage with a disruptive space requirement and consume a significant amount of electrical energy during operation, which causes a rapid discharge of the drying elements.

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furthermore, the capacitor of these devices also has takes up a considerable amount of space and is quickly destroyed.

Ss is also a device (French patent ITr. 1 595 998) for igniting a flame in with Apparatus heated by gaseous or liquid fuels known, in which the direct voltage of a dry element through a transistor-equipped oscillator directly is converted into an alternating current. In this known device the periodic signal obtained is applied to the terminals applied to the primary winding of a transformer. That appearing on the terminals of the secondary winding of the transformer Signal is rectified and charges a capacitor, which when its voltage reaches a given fourth has, via a glow lamp ο, like. into the primary winding of a A wide transformer discharges, with spark gaps on the Arranged terminals of the secondary winding of the second transformer are. If the switch of this device is in the "iilH" position, the device is constantly under stress, so that the consumption of electrical energy is high and the drying element also discharges quickly here. Besides the space requirement of these devices is significant, and their parts can also be destroyed quickly »

The invention addresses the above disadvantages • to remedy the situation and, in particular, to enable the production of an electronic ignition device for gas lighters or igniters, which only requires a low voltage energy source, the energy used to generate the sparks making up most of that from the electrical energy source for feeding represents delivered energy. The invention also aims to produce such a device, which has small dimensions.

Another purpose of the invention is to manufacture such a device in which most Parts of the electrical circuit can be implemented in the form of an integrated circuit.

Another "purpose of the invention is manufacture of a lighter containing such an ignition device «

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The electronic ignition device according to the invention for a flammable gas is indicated by the following ropes ι

- changeover means;

- Zeitbestianuigsuuts with low consumption. electrical energy delivering a signal during a time which is at most equal to a given time when. the Uiaso holding means are in a staring position;

Amplifier means for amplifying the signal $ supplied by the time determination means

an oscillator arrangement fed with the output signal of the amplifier means, and

- Gowns for increasing the voltage, which are fed with the output signal of the oscillator arrangement and a Deliver the signal to operate the spark gap mentioned.

In the preferred embodiment of the invention become the means of increasing the voltage through an inductance formed with a high quality coefficient, which is changeable the shape of a winding wound onto a ferrite core Has.

In another embodiment, the

Means for increasing the voltage dure ^ a first transformer educated.

In a first electronic ignition device according to the invention, the time determination means contain a first capacitor, then the "switching means at least zv / ei positions. The electronic ignition device contains except for the means of charging this first capacitor by the source for supplying electrical energy when the Uins ^ altmittel are in a first position, and Means for discharging the first capacitor for a given time when the switching means is in a second Position are located, wherein the amplifier means amplify the discharge signal of the first capacitor.

In a second electronic device according to the invention ignition device include the. Timing means on the one hand Gown for generating impulses, which are a given impulse Generate polarity after a time which is at most equal to the given time after the switching means

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have been brought into said test-adjusted position, and on the other hand thyristor-like means with one with the output of the Pulse generating means connected control input and an output for supplying the to be amplified by the amplifier means Signals, the thyristor-like gowns being designed in such a way that they enable the generation of a signal at the input of the Amplifying means allow, as soon as the switching means are brought into the specified position, but the delivery prevent this signal to the input of the amplifier means as soon as a pulse of a given polarity is sent to the control input of the thyristor-like agent appears

These devices contain the amplifying means and the oscillator arrangement expediently each have a transistor, the amplifier means sending its output signal to the Apply the base of the transistor of the oscillator arrangement and thus trigger it, in which case the means for increasing the voltage formed by an inductance with a high coefficient of quality are, this is preferably switched into the collector circuit of the transistor of the oscillator arrangement.

In this Pail the transistors of the oscillator arrangement have and the amplifier means is preferably of opposite conductivity type and the collector is the transistor the oscillator arrangement is connected to the base of the transistor of the amplifier means via a high value impedance.

. The device according to the invention also contains expedient

- a second capacitor;

- Means for charging this second capacitor by the one supplied by the means for increasing the voltage Signal, these means being such that after the given time the charging voltage of this second capacitor is at least equal to a significant fraction of its maximum charge voltage;

- Triggering means, which preferably contain a thyristor and a second transformer, the second capacitor, the triggering means and the second transformer are designed so that the triggering means the discharge

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of the second capacitor in the primary winding of the second transformer, the terminals of the spark gap with the little ones of the secondary winding of the second transformer are connected.

The means for charging the second capacitor are preferably designed in such a way that they charge the latter Allow the second capacitor in a time which is considerably shorter than the given time, so that the device generate at least 3 two sparks during this given time can.

In an embodiment modification in which

the device also contains a second capacitor and means for charging this second capacitor by means of a signal supplied by the means for increasing the voltage, these are Means for charging the second capacitor designed so that after the given time the charging voltage of the zv / eiten Capacitor at least equal to a significant fraction its highest charging voltage, the Sntladekreis des second capacitor in series a thyristor and the primary winding of a transformer, with a Zener diode whose ignition voltage is lower than the highest charging voltage of the

the _M

zv / eiten capacitor is connected between / anode and the triggering "tetrode of the thyristor, so that its anode is connected to the trigger electrode and its cathode to the anode of the thyristor, with a resistor between the trigger electrode and the cathode of the thyristor is provided.

The electrical energy source for feeding this device can be through a drying element or a re rechargeable accumulator is formed.

In another embodiment of the invention This is an electronic device for igniting a flammable gas, especially for lighters marked3 it contains the following parts:

- control means;

- Timing means with low consumption of electrical energy delivering a signal during a time which is at most equal to a given time when

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the switching means are in a certain position;

- one with the output signal of the timing means fed oscillator arrangement, and -

- Means for increasing the voltage, which with the Output signal of the oscillator arrangement are fed and provide a signal for actuating the spark gap.

The invention is explained below with reference to the drawing by way of example,

]? ig. 1 shows a first embodiment of a device according to the invention »

Pig. 2 shows a second embodiment of a device according to the invention.

3 is a partial view of a third embodiment of a device according to the invention.

Fig. 4 shows a fourth embodiment of a inventive device.

Figures 5, 6 and 7 each show a different one

Embodiment of a device according to the invention, in which the time determining means contain thyristor-like means.

Fig. 8 shows an embodiment modification of the

electrical energy source for feeding the device according to the invention.

9 shows a lighter according to the invention.

For the sake of simplicity, corresponding parts are denoted by the same reference symbols in the various figures.

The described and illustrated records

Examples relate to an electronic device for generating of high-voltage pulses, in particular for generating sparks for gas lighters or lighters.

Such a device for igniting a combustible gas contains a spark gap in a manner known per se 1 (Fig. 1, 2, 4, 5> 6 and 7) »which sparks between its terminals 2 and 5 generated, as / ie a source 4 for supplying electrical energy (Fig. 1 to 7) ·

According to the invention, time determination means are

with low electrical energy consumption and switching means 5 provided · The time setting means are designed so that

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they deliver a signal during a time which is shorter than a given time when the switching means are in a certain position. According to the invention, these time determination means make it possible to deliver a signal to the input of the amplifier means discussed further below, at most during the given time - counting from the moment in which the switching means 5 are brought into the specific position.

In one (in Pig. 1 to 4 shown) off "guide die. Of the invention, the apparatus includes first XJniBchaltniittel 5 with two positions 6 and 7 and first, the Zeitbestimtnungsinitteln belonging capacitor 8. Menn the Umsehaltmittel 5 in the first position 6 the energy source 4 charges the capacitor 8, while the capacitor 8 is discharged for a given time when the switching means 5 are in the second position 7. The device is designed such that the discharge signal of the capacitor is applied to the amplifier means 9 The signal generated by these amplifier means 9 is applied to the oscillator circuit 10. The oscillator arrangement 10 triggered by this output signal from the amplifier means 9 supplies a cooking frequency signal Kittein 11 for increasing the voltage used.

Purpose, and as in I ¹ Ig. 1, 2, 4, 5, 6 and 7, the signal appearing at the output of the means 11 for increasing the voltage is used to charge a second capacitor 12, which is switched into the primary circuit of a second voltage-increasing transformer 13. This latter measure is of course taken independently of the embodiment of the circuit for supplying the voltage-increasing means 11. The primary circuit of the transformer 13 also contains triggering means for discharging the capacitor 12 into the primary winding of the transformer 13, the spark gap 1 then being connected to the terminals of the secondary winding of the transformer 13. The charging circuit of the capacitor 12 can be designed so that the charging time of the capacitor 8 differs little from the given charging time of the capacitor 8

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and is preferably slightly smaller. It is then appropriate that after. At the end of the given time, the charging voltage of the capacitor 12 is at least equal to a significant fraction of its highest charging voltage. The charging circuit can also be provided so that the capacitor 12 is charged in a time which is considerably shorter than the given time, so that the device generates multiple sparks during that given time. In this latter case, the triggering means are provided in such a way that they generate the discharge of the capacitor 12 when it has reached its highest charging voltage or a significant fraction thereof.

The switching means 5 with two positions 6 and 7 are formed, for example, by a double switch which, according to the design, can only be in one given position (6 or 7) at the same time. In other words, when this double switch is in position 6, is it? The charging circuit of the capacitor 8 is closed and its discharge circuit is open, while conversely, when the switch is in position 7, the discharge circuit is closed and the charging circuit is open.

The following is the embodiment shown in FIG the invention described in more detail «

The capacitor 8 is connected directly to the terminals of the energy source 4 for its charge when the switching means 5 are in position 6. Its terminal of the capacitor 8 is permanently connected to the negative pole (-) of the energy source 4, while:?, The other terminal of the capacitor is connected to the positive pole (+) of the energy source via the first part of the double switch.

The Sntladekreis of the capacitor 8 contains

a resistor 15 »whose task is explained below. This resistor 15 is on one side with the positive pole the energy source 4 via the first part 6, the switching means 5 and on the other side with the base 16 of one of the amplifying means 9 belonging transistor 17 of the conductivity type 2T-P-H connected. ■ ■ ■.

The oscillator arrangement 10 also contains a transistor 19> which also has the conductivity type Ei-P-IT. The voltage increasing means 11 are at the

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Example shown in Pig * 1 by a winding 20 with a high coefficient of quality, whichever is preferred is greater than 100, for which purpose the winding 20 on a ferrite core 21 is wound.

Its terminal of winding 20 is with the collector of the transistor 19 and its other terminal connected to the positive terminal of the power source 4. The emitter of the transistor 17 is connected to the base of transistor 19 via a winding 22 connected, the number of turns is smaller than that of the winding 20, and which are wound on the same ferrite core 21 is. In the example shown, this ferrite core 21 has the shape of a coil with a central section of small cross section, on which the windings 20 and 22 are wound, and end portions of larger cross-section. In one embodiment winding 22 has five turns and winding 20 has fifty turns. The collector of transistor 17 is connected to de.ii positive pole of the energy source 4 «Schliesslieh is the point common to the emitter of the transistor 17 and the winding 22 with the positive pole of the energy source 4 above a decoupling capacitor 235 is connected.

Bas appearing at the terminals of the winding 20 Signal charges the second capacitor 12, whose Ladui. ^ By a Diode 24 held back. The capacitor, which is therefore based on the voltage appearing at the terminals of the winding 20 or a fraction of the same, should, as soon as its charge reaches a given value, move into the primary winding, of the step-up transformer 13 discharged, at its Secondary winding, as already stated above, the spark gap 11 is connected.

According to the invention, a thyristor 25 is provided for this purpose connected in series with the primary winding 126 of the transformer 13, to close the discharge circuit of the capacitor 12. The trigger electrode 127 of the thyristor 25 is not connected

With this device the discharge takes place

of the capacitor 12 automatically when the charging voltage of the capacitor the self-ignition voltage of the thyristor 25 is reached. the Characteristics of this thyristor 25 must therefore be chosen so that its self-ignition voltage is practically that for the charging voltage

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of the capacitor 12 corresponds to the desired maximum value. at A variant (not shown) is the trigger electrode 25 is connected to the cathode of the thyristor 25.

The drying element charges during operation 4 den.Capacitor 5 »when switch 6 is in the position "EIU" is located. When the switching means are in their second, the closing of the switch 7 and the opening of the switch are in the corresponding position, the capacitor discharges 8 through the resistor 15 into the circuit of the base 16 of the transistor 17. This discharge current, pre-amplified by the transistor 17, is applied to the base of the transistor 19 via the winding 22 and enables the oscillator 10 to be triggered,

The ferrite core 21 should not only be used for the winding

20 give a high quality coefficient, but also an Ilagnetkreis form, v / elcher allows a fraction of the voltage appearing at the terminals of the winding 20 to be applied to the winding 22 to transfer. The winding 22 thus forms a Büokkopplungswieklung, v / calibrate to the working of the circuit of the transistor 19 contributes as an oscillator.

With regard to the operation of the circuit for supplying the winding 20, it should be noted that when the Double switch is brought to the aweice position 7, the charging circuit of the capacitor 8 open and its Sntladekreis closed is. The base 16 of the transistor 17 is then across the resistor 15 connected to the positive terminal of the capacitor 8. The transistor 17 is thus conductive, whereby the transistor 19 is also conductive, since its base under these conditions with the positive pole of the energy source 4 via the winding 22 and the (weak) resistance between the collector

connected gate and the emitter of transistor 17 in the conductive state / is. The capacitor 8 thus discharges into the following circuit under output from the positive terminal of the charged one Capacitor 8: resistor 15, resistor base - emitter of transistor 19 and (closed) switch 7. The value of the "Resistance 15 is chosen so that it is considerably larger than the sum of the fourth of the other resistances of the parts making up this circuit. The discharge time of the capacitor 8 is then approximately equal to the constant of the entity

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ladokreises and is therefore practically the same, the product of the Capacity ΰ of the capacitor 8 and the value R of the resistance

3b is important to note that the discharge sigxial of the capacitor 8 a first time through the Transistor formed amplifier & ttel 9 is amplified and gradually Applying a voltage change signal to the base of transistor 19 (preferably nit high frequency), its amplitude aocli thanks to the winding 20 rjxt higher. Coefficient of quality enlarged becomes * The cooking frequency signal received at the terminals of winding 20 occurs as soon as the double switch is in position 7, and vanishes after the given side, which, as stated above, is determined by the side constant RO.

Pig. 2 shows another embodiment of the invention, in which the voltage-releasing means are formed, as in the case of the? Ig-1, by an inductance 20 with a high quality coefficient, which is expediently at least ICO. The device shown in Pig.2 differs from that shown in Pig.1 in that the locking means and the oscillator arrangement are different and simpler. This execution λ eier ^ ¹ Ig. 2. enables, as further stated luaton, the reduction in the number of parts of the device which cannot be manufactured in the form of an integrated circuit. Ausoerdea enables the ger.mss Pig.-2 design to further reduce the leakage currents and thus to largely save the charge of the dry element 4, that is, to lengthen its Iiebensdp.u ^ · "·

Be the one in Pig. 2 embodiment of the invention shown are also means for triggering the discharge of the second Fjjiüensator 12 provided which of the in Pig. 1 shown are different.

This device, like that in Pig. 1 shown, a circuit for charging the capacitor 8, Unschalttnittel 5 with two positions β and 7, and one the resistance 15 containing circuit for discharging the capacitor 8. The positions 6 and 7 correspond to the switching means the closing of the loading circuit or the 3 loading circuit der = capacitor 8.

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The intensifying means comprises a transistor 120 of conductivity type PWP and the oscillator arrangement comprises a transistor 121 of the opposite conductivity type, namely of the NPN type. The collector of the transistor 120 is connected to the negative terminal of the energy source 4 via a resistor 122 and its emitter is connected directly to the positive Kleciaie same. In addition, the collector of the transistor 120 is connected to the base of the transistor 121. The collector of the transistor 121 is connected to the emitter of the transistor 120 via the winding 20, while its emitter is connected directly to the negative pole of the energy source 4. A high-resistance resistor 123 is arranged between the collector of transistor 121 and the base of transistor 120.

As shown (and as already stated) the switching means 5 are designed such that the switch 7 is open when the switch 6 is closed and vice versa.

During operation, the capacitor 8 charges when the switch 6 is closed. When the capacitor 8 is loaded, the balance means are in their opposite Position brought, i.e. the switch 7 is closed. The discharge circuit of the capacitor 8 contains output from the positive terminal of the same the interface emitter-base of the transistor 120, the resistor 15 and the switch 7. Der Discharge current of the capacitor 8 is amplified by the amplifier means including the transistor 120, and this amplified Discharge current is applied to the base of the transistor 121 of the oscillator arrangement. The transistor 121 is so saturated that and its work as an oscillator is ensured by the resistor 123, which the on the collector of the The voltage generated by the transistor 121 is fed back to the base of the transistor and thus to the base of the transistor 121. Of the Transistor 120 thus has a dual purpose: on the one hand, it amplifies the discharge current of the capacitor 8 and, on the other hand, it forms the feedback circuit of the transistor 121 connected as an oscillator.

Note that since the base of the transistor 121 is connected to the negative terminal of the power source 4

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connected across the Tüderstand 122, this transistor is normally is blocked, which prevents the! energy source from consuming unnecessary energy. The (versus the value of resistor 15) high value of resistor 123 is necessary so that on the one hand the applied to the base of transistor 120 Voltage is not too high, and on the other hand the visual oscillation frequency of the oscillator arrangement has a high value

In a special version that delivers

Drying element 4 has a voltage of 1.5 volts, the capacitor 8 has a capacity of 25μΡ, the resistors 15, 122 and 123 have the values 20 kJL or .300Λ or 200 kJl, and the inductance 20 has the value 300 μΗ, while its (measured with direct current) Resistance of the order of 2.0. amounts to.

Like the pig in that babble. 1 loads the output of the oscillator containing transistor 121 second capacitor 12, as evidenced by the presence of the diode

24 is made possible. Furthermore, a thyristor 25 are in series with the primary winding of the transformer 13 to close the Sntladekreises of the capacitor 12 and a Zener diode 26 are provided, its anode with the trigger electrode of the thyristor

25 and the cathode of which is connected to the Kl ^ r> Ee common to the capacitor 12 and the anode of the thyristor 25. Besides that a resistor 27 is connected between the trigger electrode and the cathode of the thyristor 25.

This training dea discharge circuit a of the capacitor 12 allows the thyristor 25 to be made conductive for a precisely determined charging voltage of the capacitor i2, or otherwise expressed, the discharge of the capacitor 12 into the primary winding of the transformer 13 at a precisely determined Value of his charge. Indeed, the applicant has established that that the Bigen trip voltage of the thyristors in general is changeable from one thyristor to another, while in the above training using a Zener diode, this difference is no longer significant, since the voltage at which the capacitor 12 discharges, is determined by the ignition voltage of a Zener diode, the value of which is determined constructionally.

The resistor 27 should of course be the anode

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the zener diode 26 rises to the negative terminal of the capacitor associate. In order for this Zener diode to be conductive, its ignition voltage must be lower than the highest charging voltage of the capacitor Be 12.

In a (not shown) execution

Conversion is the primary winding of the second transformer, 13 » formed by the winding 20.

In another (not shown) variant embodiment, a diode is provided, the anode of which with the The trigger electrode of the thyristor 25 and its cathode (possibly via a current limiting resistor) with the not with the base of the transistor 120 is connected to the terminal of the resistor 15, In this latter embodiment, as soon as the Thyristor 25 is conductive, a positive pulse is transmitted to the base of transistor 120, which blocks it will. The discharge of the capacitor 8 only goes a lot more when the thyristor 25 is blocked again, i.e. after it has been generated of a spark at the terminals of spark gap 1, Kan so sparks of constant energy, which can reach high voltages .. "

3? Ig. 3 shows yet another embodiment

of the part of the device according to the invention, v / which the delivery of an alternating signal to the terminals of the winding 20 with high good coefficient. This embodiment allows a further reduction in the number of parts of the device, which cannot be manufactured in the form of an integrated circuit. It also increases the consumption of the device largely reduced in electrical energy, as in the case of the Αμ3ΐΰΐΗ ^ η33Ϊοπη shown in Pig * 2, if the Switch 5 is kept closed and the capacitor 8 is discharged »

Fig. 3 does not show the part of the device which allows to exit from the on the terminals of the Winding 20 occurring signal the sparks at the terminals of the Generate spark gap. This part of the circuit can be implemented in any known manner, but is preferred according to the embodiment shown in FIG.

Be ?. the embodiment of the device according to the invention shown in FIG. 3 is the resistance

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of the discharge circuit of the capacitor 8 is formed by the input impedance of a transistor 30 with a pelde effect (? 3T). In the example shown, the transistor PET has the type KOS with the channel IT. Since the input impedance of such a field effect transistor 30 is high, a capacitor 8 can be used whose capacitance is so small that it can be manufactured as an element of an integrated circuit If, for example, this input imped ans has a value of 10 JI and a discharge side of the capacitor 8 of 0.5 second is desired, the capacitance of the capacitor 8 has the value 5 picofarads produced v / earth.

The ¹ Ior 31 of the transistor PET 30 is connected to a terminal of the capacitor S via the switch 7. The feed / oil electrode 32 of this transistor PST 30 is connected to the positive pole of the dry element A- and its discharge electrode 33 is connected to the base of the transistor 120a of the IT-P-IT type belonging to the amplifier means.

The camillator arrangement of this device contains also a transistor 121a of the P-Ii-P type. A capacitor 123, a low capacitance connects the collector of transistor 121a to the base of transistor 120a. The capacity de second ens at ο vs 123a is equal to or less than 30 picofarads, and although preferably equal to 10 picofarads, so he too can be realized through integration. In general, however, it is preferable to use a high impedance resistor, which is easier to integrate.

Except for the fact that in this embodiment of the invention (shown in Pig. 3) the capacitor 8 can be implemented as an element of an integrated circuit. it should be noted that the transistor PET 30 is an additional Amplifier stage forms. In general, the capacitance of the capacitor 8 can be selected to be smaller, the larger the Number of amplifier stages is.

With regard to the embodiment shown in FIGS. 2 and 3, it should be noted that the impedances 123 and 123a ohmic and / or capacitive impedances of high value are · In other words, in Pig. 2 would have instead of the resistor 123 a capacitor of low capacitance can be selected.

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Likewise in Pig. 3 instead of the capacitor 123a a higher one Resistance can be chosen.

How the Pig. 3 is practically the same as that in Pig. 2 device shown.

Pig. 4 shows another embodiment of FIG

According to the invention, the device, which differs from the in Pig · I to 3 through another implementation the gown to increase tension differs.

In this embodiment, the voltage-increasing means are carried out by a transformer with two primary windings 20a and 22a. and a secondary v / i cklung 20l> educated.

V / ie with the in Pig. 1 shown embodiment According to the invention, the amplification means comprise one Transistor 17 and the oscillator arrangement a transistor 19 These two transistors 17 and 19 are of the conductivity type N-P-Ij.

The collector of Tranaistor 17 is with the

positive pole of the energy source 4 and via the winding section 20a of the primary winding of the transformer with your collector of the Transistor 19 connected. The Buitter of the transistor 17 is with the base of transistor 19 via the second "winding section 22a. connected to the primary winding of the transformer.

The emitter of transistor 19 is connected to the

negative pole of the energy source 4 via the switch 7 of the switching means 5 connected. The emitters of the transistors 17 and 19 are connected to one another via a decoupling capacitor 23a.

The transformer 110 is expediently through

a perrit rod formed on which the primary and secondary windings are wound up. This ferrite rod has, for example, the shape of an elongated cylinder. In another embodiment of the transformer 110, the magnetic circuit thereof is broken a Perritspule is formed, which has a central portion of small cross-section on which the primary and secondary windings are wound up, and end sections of larger cross-section, section has

The functioning of the feeding circuit of the

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The primary windings of the transformer 110 is practically the same as that described with reference to Pig. 1 ". It is therefore not explained again here. It should be noted, however, that the winding 20a of the transformer together with the secondary winding 20b_ form a resonant circuit due to the self-inductance and mutual inductances as well as the" interference capacitances ¹¹ connected in parallel to these windings (where the Interference capacitance of the secondary winding of the transformer 110 is predominant) forms. This resonance circuit is connected to the base of the transistor 19 via the transistor 17 and the winding 22_a. So there is a circuit as a blocking oscillator for high frequency. It should also be noted that, for reasons of convenience and manufacturing, the windings 20a and 22a are wound on the ferrite rod (or the Perrit coil) of the transformer 110 in opposite directions. Äusserdem is to be noted that the high-frequency signal obtained at the base of transistor 19 is phase shifted from the obtained at the collector of the same transistor high frequency signal.

The capacitor 25a has the task of deriving a high-frequency signal de3 received at the terminals of the winding 22a to create so that this signal cannot short-circuit the transistor 17 as an alternating current.

Like the one in Pig. 1 to 3 shown

In the embodiment, the winding 20a preferably has a high coefficient of goodness, which is why it is necessary to achieve a high one Voltage at the terminals of the secondary winding of the transformer 110 does not need to have a large transmission ratio has, since the high quality coefficient of the winding 20a already allows, a considerable voltage at the primary terminals of transformer 110 to get

Just like in the Pail the Pig. 2 will

at the terminals of the secondary winding 20j> of the transformer appearing signal rectified by means of a diode 24 to to charge a second capacitor 12, and a thyristor 25, a zener diode 26 and a resistor 27 are also provided, which are connected in the same manner as described with reference to Pig * 2.

Pig 5, 6 and 7 show a different embodiment

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form of the time-determining means, which is permitted, to the To dispense with capacitor 8 (often difficult to realize through integration), and the implementation of switching means 5 simplified.

In the two shown in FIGS. 5 and 6 Embodiments of the invention include the timing means a thyristor-like element 200 with a control input 201 and one; Exit 202. The timing tools included furthermore means for generating Inipulsen, which generate a pulse at the latest at the end of said given time - after the switch 5 has been closed -, v / obei the output of this Pulse generating means with the control input 201 of the thyristor-like Elements 200 is connected * The thyristor-like EIement'200 is designed so that when there is no pulse at his Receives control input 201 which allows a signal to be generated at the input of the amplifier means. Ausserden delivers this element 200 as soon as there is a pulse of given polarity has received at its control input 201, at its output a signal indicating the delivery of a signal. the entrance the enhancement agent prevents »This condition, i.e.» in which the thyristor-like element prevents the delivery of a signal to the input of the amplifier means, only lasts so long the switch 5 is closed. When the switch 5 is opened, the energy source 4 no longer supplies any energy, but as soon as it does the switch 5 is closed again, a signal appears at the input of the amplifier means, at most during the given time.

The one in Pig. 5 contains the example shown the thyristor-like element has two transistors 203 and 20v with opposite conductivity types. The transistor 203 has the type P-IT-P and the transistor 204 the type I-P-li. Of the The emitter of the transistor 203 is connected to one terminal of a resistor 205a, the second terminal of which is connected to the positive one Pole of the energy source 4 is connected via the switch 5. The base of transistor 203 is connected to the positive pole of the energy source 4 via a resistor 205, which is smaller than the resistance 205u (and, by the way, can have the value Hull), as well as connected via switch 5. Furthermore, the basis of the

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Transistor 203 connected to the collector of transistor 204, and the base of transistor 204 is connected to the collector of transistor 203. The emitter of the transistor is directly connected to the base of the transistor 120. This emitter of transistor 204 and the base of the transistor 120 (the amplifier means) common point is with the negative pole of the energy source 4 connected to a V / resistor 206, wolch-jr zv / eekmäüsig has a high value.

The impulse generating means are used in the in Fi ^. 5 is formed by an oscillator arrangement 210 which is designed such that it is fed by the energy source 4 when the switch 5 is closed. This oscillator arrangement 210 contains an output 211 connected to the control input 201 of the thyristor-like element 200. It should be noted that this input 201 is formed here by the point common to the collector of transistor 203 and the base of transistor 204. In the example, the oscillator arrangement 210 contains a high frequency signal supplying Xi-ir

212 is connected. The output of the divider 213 forms the output 211 of the oscillator arrangement 210. The frequency divider known per se 213 provides a signal whose frequency is a given fraction of the frequency generated by the oscillator 212 Signal is. The period of this at the output of the divider

213 seen signal is, for example, of the order of magnitude 0.5 second.

All parts of the in Pig. 5, with the exception of course the energy source 4, the switch 5, the winding 20, the capacitor 12, the transformer and the spark gap 1 can thus be implemented in the form of an integrated circuit.

In operation, the entirety of the parts of the circuit is not supplied with electrical energy when the Switch 5 is open. When the switch 5 is closed, the transistor 203 is in the blocking state, since the V / resistance 205a. is larger than the resistor 205, so that the potential of the emitter of transistor 203 is smaller than that of its base

309832 / CUU

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is. As a result, the base of the transistor 204 has no specific potential as long as no signal appears at the input 201, so that the transistor 204 is also blocked. This has the consequence that the base of the transistor 120 is brought to a negative potential and a signal appears at the terminals of the inductance 20. A spark (or a spark series) is therefore generated between the electrodes 2 and 3 of the spark gap 1.

As soon as a positive pulse at the input

201 of the thyristor-like element 200 appears, the transistor goes 204 into the conductive state and brings the transistor 203 into the conductive state. The potential of the base ■. of transistor 120 is then practically equal to the potential its emitter, what the blocking of the transistor 120 and thus the blocking of the transistor 121 causes. Then there can be no spark occur at the terminals of spark gap 1. The state of saturation of the two transistors 203 and 204 is maintained as long as the switch 5 is in the closed position remain. Since the oscillator 210 only supplies positive pulses at its output 211, the transistor 204 remains in the saturation state.

It is to bemerir.Mi that the fourth of the resistances 205, 205a and 206 are chosen so that the current intensity flowing through these resistors is negligible, even if the transistors 203 and 204 are saturated and the switch 5 is closed. Likewise v / ground for the oscillator 210 such parameters are chosen that its electrical energy consumption is negligible. Each time the switch 5 is closed to generate a spark or a series of sparks The energy consumed is then low. In other words, the energy supplied from the energy source 4 becomes substantial used to generate sparks at terminals 2 and 3 of spark gap 1 without unnecessary energy consumption.

In a modification (not shown), the transistors 203 and 204 are implemented by a device like a3 tetrode thyristor replaced.

In the embodiment of the invention shown in Fig. 6, the pulse generating means are through the

309832 / 04U

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electronic ignition device formed by seibat.

Further, in this embodiment, the thyristor-like element 200 is a simple thyristor. The control input 201 is then formed by the gate of the thyristor, and its output 202 - v / elcher with the negative pole of the energy source 4 is connected via the high resistance 206 removed at its cathode. It should be noted that, in terms of the element 200, a thyristor with a low holding current is used is chosen. In other words, this thyristor must be relatively small, between its anode and itself Currents flowing through its cathode remain conductive.

Since the pulse generating means by the electronic Ignition device are formed, is a connection 230 between the gate of the thyristor 25 and the gate of the thyristor 200 manufactured.

With regard to the operation of the Pig. 6th

It should be noted that the thyristor 200 shown in FIG. 5 d parked element 200 works. As soon as the switch 5 is brought into the "JSIH" position, the thyristor 200 is not conductive (since no signal appears at its gate), so that? a signal appears at the base of the transistor 120 and the capacitor 12 is charged. Once the charge D has 12 reaches a gefebenen value capacitor, the Zener diode 26 as well as the thyristor 25 conductive, so the capacitor that 12 in the primary winding of the transformer 13 is discharged, so that a spark un the terminals of the spark gap 1 appears . At the same time, the positive discharge pulse is transmitted to the control input (or the gate) 201 of the thyristor 200 via the connection 230, so that the thyristor 200 becomes conductive, whereby the transistor 120 is blocked.

It is 2U notice that controlling the thyristors 25 and 200 takes place through the Zener diode 26.

It should also be noted that the capacitor

12 loads itself in a given time, and that this time comes in handy that is, according to which the spark is generated at the terminals of the spark gap 1.

A resistor 220 is expediently provided on the way

309832/04 44

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the connection 230 is provided to the gate of the thyristor ■ limit 200 incoming electricity.

When creating a simple κν / ί-bond the gate of the thyristor 25 and the St your input 1 of the thyristor 200 is only a single point on the electrical parts of the spark gap 1 generated. To achieve better ignition reliability it may be useful to have a peck at the Klerraaen of the point gap 1 when the switch 5 is closed. For this purpose, one shown in 'Fig. 6 shown with dashed lines Buffer member 240 are provided. This buffer element '240 is between the gate of the thyristor 25 and the control input 201 of the element 200 arranged and designed so that it delivers a positive pulse at its output only when it has received a certain number η of positive pulses at its input

The buffer member 240 is of course fed with electric power 3 from the power source 4, and its consumption is negligible.

In the case of a variant of the embodiment, part of a Thyristor an equivalent ^ lenient used v / ground, a. 3. a "programmable sin-layer transistor". The control impulse the gate must then be negative.

Pig. 7 shows another embodiment of FIG

inventive device, in which in contrast to the in Pig. 1 and 6 shown embodiment of the invention Amplifying means for amplifying the timing means supplied signal are provided. In this embodiment, the timing means deliver a signal immediately to the oscillator arrangement.

Like in Pig. 7, contain the timing means a tetrode thyristor 200a, e.g. the tetrode thyristor BRY 46 from Corapagnie Ι.Τ.Ϊ. The control input 201a This device 200a is v / ird through the cathode gate of the tetrode thyristor 200a formed.

In this example / voltage increasing

Smock like in the Pig's pail. 4 through a transformer 110 with two primary windings 20a and 22a. educated. The oscillator arrangement again contains the Pig, as in the Pail. 4 a tran-

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sictor 1S of conductivity type IJ-P-Ii.

The positive pole of the energy source 4 is nit

the anode of the tetrode thyristor 20Oa _- connected via the Uiasohaltmittel 5 üc-7.1. «via a resistor 205b. This anode is remote / dea anode port 250 of thyristor 200a. connected via a resistor i: 'ü5 £. This anode is also electrically connected to the base of the thyristor 19 via the winding 22. A decoupling capacitor 23b is connected to the terminals of resistor 205.b in front of 3α.α · .3.η. The liaitter dea transistor 19 and the cathode of the Tstrodenthyristor 200a are connected to the negative pole of the energy source 4, the collector of the transistor 19 is connected to the positive pole (+) of the energy source 4 via the Uniüchaltmittel 5 and the winding 20a.

Like the one in Pig. 6 shown device is the Katliodentor of the tetrode thyristor 200a with the gate the thyristor 25 is connected through a resistor 220a.

This device offers the advantage as a result

the omission of the transistor allows the amplifier means to simplify the circuit. It's j ed ο cn too. notice that the electrical energy consumption is greater than that in Pig. 5 and 6 shown devices may be. This embodiment is therefore particularly advantageous for the manufacture of table lighters in which a drying element of relatively large capacity can be used.

During operation, the tetrode thyristor 200a is not conductive as soon as the switch 5 is brought to the "ΞΙΗ" position, so that a signal appears at its anode. This signal is transmitted to the base of transistor 19 via winding 22a. The oscillator arrangement therefore supplies a Si _0. "Al at its output, so that a point at the terminals of the spark gap 1 can occur simultaneously with the transmission of the positive discharge pulse of the capacitor 12 to the control input 201a of the tetrode thyristor 200a so conductive, whereby the transistor 19 can be blocked / grounded.

Like the one in Pig. 6, a buffer member (not shown in FIG. 7) can be provided will.

30983

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With regard to äm £ Gchaü-un ^ n, which under

Output from the output signal of the voltage increasing means 11 (Pig. 1, 2, 5 and 6) or the transformer 110 (Fig. 4 and 7) enable the primary winding of the transformer 13 to be fed and a thyristor 25, it should be noted that after the capacitor is discharged, the thyristor 25 returns to must return to the non-conductive state. For this purpose, the elements of this circuit, in particular the capacitance of the Capacitor 12 and the inductance of the primary winding of transformer 13, chosen so that the operating state of the Capacitor 12 is not critical or attenuated.

It should be noted that the circuit which is taking output from the output voltage of the voltage increasing Gown 11 controls the spark gap 1, can be implemented in various ways. In certain embodiments, can in particular the spark gap 1 directly to the output terminals the voltage-increasing means 11 connected v / ground. It is also possible to envisage various "design modifications" of the triggering means which allow the capacitor to be discharged 12 in the primary winding of the transformer 13 allow. If, for example, the circuit is designed according to Fig. 4, the gate 127 of the thyristor 2p can be connected to its cathode v / earth. Furthermore, the thyristor 25 can be replaced by a simple holder.

A protective diode (not shown) for protecting the thyristor 25 can also be provided.

It should also be noted that the

Circuits in the form of integrated circuits or of hybrids Circuits (circuits in which all elements are combined in one and the same housing} can be implemented.

Fig. 8 shows an embodiment of the inven-

dunggeiaassen device, in which the source for supply with electrical energy is not a dry element but a rechargeable accumulator 55 of small dimensions. This accumulator For example, as shown in FIG. 8, it can be charged by a battery 56 of photo elements through a diode 57. Of course, other means of charging the Accumulator 55 provided v / earth, e.g. a (not shown)

309832 / 0U4

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Thermocouple whose hot opening point is through di3 from the direction of ignition generated flame is heated. This latter execution is of particular interest when the ignition device is used to ignite the planune of a stove or the like which burns for a long time.

The device for generating ignition sparks is particularly suitable for dividing gas lighters

! • 'ig. 9 shows such a lighter with

a device for generating the ignition spark according to one of the in Fig. 5j, 6 or 7 illustrated embodiments. A13.e elements dos Tfeuersougs are in a known manner in one Kit contain a housing 30a provided with a lid 21a. The lighter It is designed in such a way that the opening of the cover 31a. the tilting of the U; .inchaltr.iittel 5 causes!;, which is constantly in the "OFF" position when the lid 31a is in the Closing position is located. In the case of dissatisfied example, one stops the cover 31a attached pin 51 a Fedcrblatt 44, on the A contact removed from a stop contact 46 ends; 45 is located. With Anhsbcix of the cover 31a. becomes the touch between the stop 46 and the contact 45 made, v / o through. the switch 5 is closed.

The lighter is also designed so that

the opening of the lid 31a the outlet de3 in a container 32a contained gas via an outlet nozzle 33a. causes

In FIG. 9, the unit 35 represents the elements of the electrical circuit of the device according to the invention represent.

Such a design is particularly useful for a pocket lighter, while for the production of a Table lighter the lid 31a is not essential.

The advantages of the above high voltage pulse generating device are numerous. The device is particularly suitable for miniaturization. The low electrical energy consumption enables the use of a single dry element of small dimensions.

The device according to the invention can have numerous applications in addition to those already mentioned for lighters

309832 / Q444

or gas lighter for the household finder .. You r:.?. nn everywhere used where high voltage pulses are to be generated.

309832 / QUA

Claims (1)

- 27 - 3847-72 \ 1 Λ Device for the ignition of a combustible C - ?, i3-2s for gas fire eye or lighter with a spark gap arranged in the vicinity of the burner to generate sparks between their terminals and a source for supplying electrical energy, characterized by: - ür.iGohalbmittel (5) j - Timetables (6, - 15 or 200, 210) ; \ x " low consumption of electrical energy, which provide a Sig- :,: \ 1 v / aiirend a Z: -it, which is high" to ns equal to a; 33.5 * el} onexi time, v / enn the U..ns ehalt means (5) are in a c-esti ^ nten position; - Voretärkermittel (9) to reinforce the signal supplied by the signaling means (8); -a irit the output & n ^ e -signal of the amplifier means (9) o ^es pQ - s ^ - Osz'Jllf.torajtiordiiung (l0), and - epehnaerhöhun ^ Guiittel (11), v; clchö ait do- ¹ . Outside of the Os ^ illatcraiiordnung (10) supplied v, ^t er ~ den and «in signal to control the spark gap (Pig. I Ms 6), 2.) Device according to claim 1, characterized gekennzöichnet, that the determination means impulse generating means (210), v / calibrate a pulse of given polarity after a time which is at most equal to the given time after the Uraachaltinittel (5) in said specific position were brought, as well as thyristor-like means (200) with a A control connected to the output of the pulse generating means (201) and an output (202) for supplying the signal to be amplified by the amplifier means (120), wherein the thyristor-like gowns (200) are designed to generate a signal at the input of the amplifier means (120) as soon as the switching means (5) have been brought into the specific position, and that the delivery of this signal to the input of the amplifier means (120) is prevented as soon as a pulse of given polarity at the control input (201) the thyristor-like smock appears (Figs. 5 and 6). 3.) Device according to claim 2, characterized in that the;: · the thyristor-like smock (200) a thyristor 309832 / CU44 contain, whose gate controls! iiang (201) and its one of the "two other electrodes the output (202) of the thyristor-type Gown (200) forms (Pig. 6). 4.) Device according to claim 2, characterized in that that the thyristor-like Hittel has two thyristors (203 and 204) with opposite conductivity type, the formation being made so that the base of one transistor is connected to the collector of the other transistor is (Pig. 5) · 5.) Device according to one of claims 2 to 4, characterized in that the pulse suction means a Oscillator arrangement (210), the output (211) with dsm Control input (201) of the thyristor-like means (200) is connected, the period of the oscillator arrangement (210) being equal to the given time 'is (Pig. 5) · 6.) Device according to one of claims 2 to 4, characterized in that the pulse generation CT means be formed by the electronic ignition device (Fig.6). ' 7 ·) Device according to claim ^, characterized by a buffer member (240) arranged between an output of the electronic ignition device and the control input (201) of the thyristor-like means (200), which after the occurrence of a certain number η of pulses at its input a pulse generated polarity at the control input of the thyristor-like gown. 8.) Device according to claim 1, characterized in that the time determination means have a first capacitor (8), and that the switching means (5) have at least two positions (6 and 7), the electronic Ignition device also means for charging the first capacitor by the source for supplying electrical energy when the switching means (5) are in a first position (6) are located, and means for discharging the first capacitor during the given time when the switching means is in a second position (7), wherein the amplifier means (9) the discharge signal of the first capacitor (8) reinforce (Pig. 1 to 4). 9 ·) Device according to one of the claims 1 to 309832/0444 - 29 - 3847-72 ö, characterized in that the voltage increase means (11) by an inductance (20) with a high coefficient of quality are formed (Pig. 1, 2 ·, 3> 5 and 6). 10.) Device according to claim 9 »characterized in that the inductance (20) dur ^ h one on one Ferrite core wound loop is formed (Pig. 1, 2, 3> 5 and 6). 11.) Device according to claim 9 or 10, characterized in that the G-ütekoeffisient of the inductance (20) is at least 100 « 12.) Device according to one of claims 1 to 8, characterized in that the voltage increasing means be formed by a first transformer (110) (Pig.4). 1 * ·.) Device according to one of claims 1 to 12, characterized in that the Vorstarkkortaittel (9) and The oscillator arrangement (10) has one transistor each (17 and 19 or 120, 121 or 120a, 121a), the amplifier means (9) sending their output signal to the base of the 'J-' transistor (19 or 121 or 121ii) apply the oscillator arrangement in such a way that it is triggered (Pig. 1 to 6). 14.) Device according to one of claims 9 to 11, and according to claim 13, characterized in that the! Inductance (20) with high quality coefficients in the collector circuit of the transistor (19 or 12 "or 121a) of the oscillator arrangement is switched on (Figs. 1, 2, 3, 5 and 6). 15 ".) Device according to claim 8 and one of claims 13 and 14, characterized in that the smock for discharging the first capacitor (8) during a given time, a resistor (15), the formation is made so that the discharge current of the first capacitor (8) via this V'idorstand to the base of the transistor (17 or 120) the enhancement agent is applied (Pig. 1, 2 and 4). 16.) Device according to claim 14, characterized by a second winding (22) whose number of turns is smaller than that of the first winding (20), and which are on the same Perritkern (21) is wound, this second winding (22) in the base circuit of the transistor (19) of the oscillator arrangement (10) is switched (Pig. 1). 3.0 9832/0444 - 30-, 3647-72 17.) Device according to claim 14, characterized characterized in that the transistor (121 or 12Ia.) of the oscillator arrangement and the transistor (120 or 120a) of the amplifier means have opposite conductivity types, and that the collector of the transistor of the oscillator arrangement and the base of the transistor of the amplifier means have an impedance ( 123 or 123a) is associated with a high value (Pig. 2, 3 ₇ 5 and 6). 18.) Device according to claim 8 and one of the Claims 9 to 12, characterized in that the means for Discharge of the first capacitor ^ during a given time a field effect transistor (30) and the amplifier means and the oscillator arrangement each contain a transistor (120a and 121a), the discharge circuit of the first capacitor (c) being the Resistance gate (31) - discharge electrode (33) of the field effect transistor (30), the training also being made in this way is that the discharge current of the capacitor to the base of the Transistor (12OaJ the Verot & Vkerinittcl over this w'iderytänd Gate discharge electrode of the fold off ect. Transistor (30) is applied, whereby the amplifiers! b ;; ol apply their output signal to the base of the transistor (121a) of the oscillator / boron arrangement (Fig. 3). 19.) Device according to claim 12 and 13, characterized characterized in that the first transformer (110) has a 3? erite rod, the magnetic circuit of the primary winding this first 'transformer has two windings (20a and 22a.) carries, the first of which (20ji) in the collector circuit of the transistor (19) of the oscillator arrangement and the second (22a_) in connected to the base circuit of the transistor (19) of the oscillator arrangement is, this first winding (20a.) having a high coefficient of goodness has (Fig. 4). 20.) Device according to one of claims 1 to 19, characterized by a second capacitor (12), means for charging this second capacitor kit that of the Voltage increasing means (11 or 110) supplied signal, these means for charging the second capacitor (12) are designed so that after the given time the charging voltage this second capacitor is at least equal to one 30 9-8 32/0444 - 31 - "84-7-72 significant on fraction of its highest lado & paiuiun ^ is, AuslöiserrJLtfcel (2p) and a second transformer (13) »whereby the-ίΐϋΓ second capacitor (12), the release means (25) and the second transformer (13) are designed so that the releases . This means that the discharge of the second capacitor into the primary circuit of the second transformer is possible, whereby the terminals (2 and 3) of the spark gap (1) are connected to the terminals of the secondary transformer (13) ( ? i _: > 1, 2, 4, 5 and 6). - 21.) Yo! -Direction according to claim 20, characterized in that the Hittyl for charging the second capacitor (12) enable the same to be charged in a time which is considerably shorter than the given time, so that the device during this given time can produce at least two sparks (2! ¹ Xg. 1, 2, 4, 5 and 6). 22. ) Device according to claim 20 or 21, characterized in that the means for charging the second capacitor contain a diode (24) and the discharge means contain a thyristor (25) (1, 2, 4, 5 and 6). 23.) Device according to claim 22, characterized in that the circuit formed by the thyristor (25), the primary winding of the second ' ^J -rarisi'orraatofs (13) and the second capacitor (12) is designed so that the thyristor at its self-ignition voltage ignites as soon as the charging voltage of the second capacitor (12) has reached a given value (Fig. 1). 24 «) Device according to one of claims 1 to 19, characterized by: - a second capacitor (12); - Means for charging this second capacitor with that supplied by the voltage increasing means (11 or 110) Signal that the formation is such that after the given time has elapsed, the charging voltage of the second capacitor (12) is at least equal to a significant fraction of its maximum charge voltage; - A discharge circuit for discharging the second capacitor, v / elcher in series a thyristor (25) and the Primary winding of a transformer (13) contains j - 32 - 3847-72 - A Zener diode (26), whose ignition voltage smaller al3. the highest charging voltage of the second capacitor (12), and which between the anode and the gate (127) of the Thyristor is connected so that its anode is connected to the gate and its cathode is connected to the anode of the thyristor, v / obei a resistor (27) is provided between the gate (127) and the cathode of the thyristor (25) ("Fig * 2, 4, 5 and 6), 25.) Device according to one of claims 1 to 24, characterized in that the electrical energy source a single dry element (4) is (? ig. 1 to 6) « 26.) Device according to one of claims 1 to 24, characterized in that the electrical energy source source a rechargeable battery (55) and the device Has means (56, 57) for charging the accumulator (FIG. 8). 27 ») Gas lighter or lighter, characterized that it contains an ignition device according to one of claims 1 to 16, and that all of its parts in a housing (30a) provided with a cover (31a.) is housed, whereby the training is made so that the opening of the lid (31a) the tilting of the ITraschaltnittel (5) in the certain ute slope and the exit of the combustible Gas from the container (32a.) Of the lighter (Fig. 9) · 28O Electronic device for ignition ■ a flammable gas for gas lighters or lighters with a burner, a spark gap arranged in the vicinity thereof to generate sparks between their terminals and an electrical power source characterized by J - switching means (5); - Timing means (200a_, 22Ca) with little electrical energy consumption for the delivery of a signal during a time which is at most equal to a given ■ Time is when the switching means (5) are in a certain position; - one with the output signal of the timing means fed oscillator arrangement (19a), and - Voltage increasing means (110), which, with the output signal of the oscillator arrangement are fed and deliver a signal to control the spark gap (1) (Fig. 7). 309832/0444 · Ζολπ n i - it 29.) Device according to claim 28, characterized in that the time determinations! Ttel pulse generating means, v / which generate a pulse of a given polarity after a time has elapsed, v / which is at most equal to the given time after the switchover nitxel (5) in the said particular position were brought, as well as thyristor-like middle ?. (. 200a) with a with the output of the pulse he (. 201) and an output for supplying the en receipt of Oszillatoranordnun, f seugungainittel associated control input; contain the signal to be applied, v / obei the thyristor-like Ilittel are designed so that they allow the generation of a signal at the input of the oscillator arrangement as soon as the Umsehaltmittel are brought into the certain position, and prevent the delivery of this signal to the input of the oscillator arrangement as soon as a pulse of given polarity appears at the control input of the thyristor-like means (200a). 30) Apparatus according to claim 29, characterized in that the ₃ thyristorartigon means (200a.) A Setrodenthyristor include (Pig. T). 31.) Device according to one of claims to 30, characterized in that the oscillator arrangement comprises a transistor (19a.) And the voltage increasing means comprises a first transformer (110) with ζ v / ei primary windings (20a and 22a), v / obei the first Primary winding (20a) in the collector circuit of the transistor (19a) of the oscillator arrangement and the second primary winding (22a) ir. The base circuit of the same is connected (Pig. 7). 309832 / Q444 Le first page