EP1211462A2 - Supply circuit for an ignition electrode - Google Patents

Supply circuit for an ignition electrode Download PDF

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Publication number
EP1211462A2
EP1211462A2 EP01127984A EP01127984A EP1211462A2 EP 1211462 A2 EP1211462 A2 EP 1211462A2 EP 01127984 A EP01127984 A EP 01127984A EP 01127984 A EP01127984 A EP 01127984A EP 1211462 A2 EP1211462 A2 EP 1211462A2
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EP
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Prior art keywords
circuit
capacitor
transistor
thyristor
ignition
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EP01127984A
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German (de)
French (fr)
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EP1211462B1 (en
EP1211462A3 (en
Inventor
Jochen Grabe
Carsten Wölfl
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Vaillant GmbH
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Vaillant GmbH
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Priority claimed from AT0086301A external-priority patent/AT410969B/en
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Publication of EP1211462A3 publication Critical patent/EP1211462A3/en
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Publication of EP1211462B1 publication Critical patent/EP1211462B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/004—Using semiconductor elements

Definitions

  • the invention relates to an ignition circuit according to the preamble of independent claim.
  • the ignition frequency is usually determined using an R-C combination generated in conjunction with a diac which, when the Breakdown voltage the trigger pulse (ignition pulse) for discharging a capacitor effected via a thyristor as a switch through the primary winding of a transformer.
  • the thyrister is ignited by a trigger pulse, which by a logic circuit or a ⁇ P controller is generated.
  • the aim of the invention is to avoid these disadvantages and an ignition circuit to propose the type mentioned above, which is characterized by a simple structure.
  • the proposed measures can be used to convert the network frequency Circuit, as they are provided in the known solutions, are dispensed with.
  • the proposed solution is characterized by a very simple structure.
  • the proposed measures ensure that shortly before the start depending on Type of transistor controlling the trigger terminal of the thyristor negative or positive Half wave of the supply voltage an ignition pulse for the thyristor through the transistor is triggered. This leads to a transfer of the in series to the primary coil of the Transformer switched capacitor and thus to a current flow through the The primary coil.
  • the ignition is switched on by switching the supply voltage or by switching the Trigger pulse for the thyristor off and on.
  • a resistor R100 is connected to a mains connection L. connected, which is followed by a diode D100.
  • a resistor R101 connected in parallel to this, one freewheeling diode D101 connected in parallel with this and one also connected in parallel Series connection connected.
  • This series connection is one by a primary coil 1 Transformer U100 and a capacitor C100 formed.
  • Ignition electrodes Z1, Z2 are connected to the secondary coil 2 of the transformer U100, which are arranged in the area of a gas burner, not shown.
  • resistor R100 and the diode D100 are one with the second mains connection N connected voltage divider circuit connected by the resistors R106 and R110 is formed.
  • the connection of these two resistors R106 and R110 is the Base of a pnp transistor T101 and one of a diode D102 and a resistor R114 series connection connected. This series connection is the Emitter of transistor T101 and a capacitor C101 connected to the second network connection N is connected.
  • the collector of transistor T101 is connected to the gate terminal via a resistor R102 of the thyristor T101 connected.
  • the embodiment according to FIG. 2 differs from that according to FIG. 1 in that that parallel to capacitor C101, which is connected to the emitter of transistor T101 is, another transistor T102 is connected in parallel.
  • this transistor T102 is connected in parallel.
  • the base of this transistor T102 on the one hand via a resistor R113 with the diode D102 and in series with this switched resistor R114 and connected to an optocoupler IC100, the Main current path, or emitter is connected to the second network connection N.
  • the control input of the optocoupler IC100 is connected to a via a resistor R112 Control voltage UB connected, the LED of the optocoupler IC100 continues with is connected to a control terminal OFF.
  • the trigger pulse for the thyristor T100 which is used to control the U100 transmitter, shortly before the start of each negative half-wave of the AC supply voltage between the network connections L and N.
  • the ignition spark between the ignition electrode Z1 and the ignition electrode 2 is through Discharge of a capacitor C100 through the primary winding of a transformer U100 generated.
  • the thyristor T100 serves as the switching element, with the parallel to this switched diode D101 serves as a freewheeling diode.
  • the resistor R101 discharges the Capacitor C100 after switching off the power supply.
  • the resistor R100 and the diode D100 the capacitor C100 charged.
  • the energy required for the Ignition pulse, which is transmitted to the electrodes via the transformer U100, is then in the Capacitor C100 saved.
  • the resistors R100 and R106, the diode D102 and the resistor R114 the capacitor C101 charged. Via the voltage divider through the resistors R100 and R106 one hand and resistor R110 is formed, the voltage across the Capacitor C101 limited.
  • the Transistor T101 since the base potential of the pnp transistor is above its emitter potential lies. At the end of the positive half-wave of the supply voltage, the base potential becomes less than the emitter potential of transistor T101, which is caused by capacitor C101 positive potential is maintained. The transistor T101 therefore becomes conductive and remains in this switching state during the negative half-wave of the supply voltage.
  • FIG. 2 shows an example of what happens by short-circuiting the capacitor C101 through the transistor T102 connected in parallel with this, the formation of a Ignition pulse can be prevented.
  • the ignition can of course also be switched the supply alternating voltage L N via a relay or an optotriac as well turned off.
  • the transistor is switched T102 via an optocoupler IC100, the base of transistor T102 via the Resistor R113 if the optocoupler IC100 is not switched through during the positive Half wave of the supply voltage on one opposite the emitter of the transistor T101 is held higher potential and is therefore switched on and therefore the Capacitor C101 cannot charge.
  • the thyristor T100 cannot be ignited because C101 can discharge via R102. So can also the capacitor C100 does not discharge.
  • the proposed ignition circuits are characterized by only a few simple components and thus a small space requirement and high reliability.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

The ignition circuit has a transformer whose primary coil can be controlled by a pulse generator circuit. The ignition electrode is connected to the secondary coil of the transformer, and has a capacitor connected to the primary coil. The capacitor is charged via a thyristor. The thyristor is connected in parallel with this series circuit and is connected to a mains terminal via a resistor and a diode. The trigger terminal of the thyristor is controlled via a transistor which is controlled by an RC circuit connected to the middle terminal of a voltage divider circuit. The transistor is connected to the capacitor of this RC circuit and is base connection is connected to the middle terminal of the voltage divider.

Description

Die Erfindung bezieht sich auf eine Zündschaltung gemäß dem Oberbegriff des unabhängigen Anspruches.The invention relates to an ignition circuit according to the preamble of independent claim.

Bei den derzeit eingesetzten Zünderschaltungen wird die Zündfrequenz meist über eine R-C-Kombination in Verbindung mit einem Diac erzeugt, der bei Überschreiten der Durchbruchspannung den Triggerimpuls (Zündimpuls) für die Entladung eines Kondensators über einen Thyristor als Schalter durch die Primärwicklung eines Übertragers bewirkt. In anderen Schaltungen wird der Thyrister durch einen Triggerimpuls gezündet, der durch einen Logikschaltkreis oder einen µP-Controller erzeugt wird.In the detonator circuits currently used, the ignition frequency is usually determined using an R-C combination generated in conjunction with a diac which, when the Breakdown voltage the trigger pulse (ignition pulse) for discharging a capacitor effected via a thyristor as a switch through the primary winding of a transformer. In other circuits, the thyrister is ignited by a trigger pulse, which by a logic circuit or a µP controller is generated.

Bei den bekannten derartigen Schaltungen wird in der Regel mit einer relativ hohen Frequenz gearbeitet, wodurch sich jedoch der Nachteil großer Toleranzen der Zündfrequenz und -spannung bei Diacs und der große Abstand durch das notwendige Vorhandensein einer Logigschaltung bei µP-Controllern ergibt.In the known circuits of this type, a relatively high value is generally used Frequency worked, but this has the disadvantage of large tolerances of the ignition frequency and tension with diacs and the large distance due to the necessary presence a logic circuit with µP controllers results.

Ziel der Erfindung ist es, diesen Nachteile zu vermeiden und eine Zündschaltung der eingangs erwähnten Art vorzuschlagen, die sich durch einen einfachen Aufbau auszeichnet. The aim of the invention is to avoid these disadvantages and an ignition circuit to propose the type mentioned above, which is characterized by a simple structure.

Erfindungsgemäß wird dies bei einer Zündschaltung der eingangs erwähnten Art durch die kennzeichnenden Merkmale des unabhängigen Anspruches erreicht.According to the invention, this is achieved by an ignition circuit of the type mentioned at the outset characteristic features of the independent claim achieved.

Durch die vorgeschlagenen Maßnahmen kann auf eine die Netzfrequenz umsetzende Schaltung, wie sie bei den bekannten Lösungen vorgesehen sind, verzichtet werden. Außerdem zeichnet sich die vorgeschlagene Lösung durch einen sehr einfachen Aufbau aus.The proposed measures can be used to convert the network frequency Circuit, as they are provided in the known solutions, are dispensed with. In addition, the proposed solution is characterized by a very simple structure.

Durch die vorgeschlagenen Maßnahmen ist sichergestellt, daß kurz vor Beginn einer je nach Typ des den Triggeranschluß des Thyristors steuernden Transistors negativen oder positiven Halbwelle der Versorgungsspannung ein Zündimpuls für den Thyristor durch den Transistor ausgelöst wird. Dadurch kommt es zu einer Umladung des in Reihe zur Primärspule des Übertragers geschalteten Kondensators und damit zu einem Stromfluß über die Primärspule.The proposed measures ensure that shortly before the start depending on Type of transistor controlling the trigger terminal of the thyristor negative or positive Half wave of the supply voltage an ignition pulse for the thyristor through the transistor is triggered. This leads to a transfer of the in series to the primary coil of the Transformer switched capacitor and thus to a current flow through the The primary coil.

Die Zündung wird dabei durch Schalten der Versorgungsspannung oder durch Schalten des Triggerimpulses für den Thyristor aus- und eingeschaltet.The ignition is switched on by switching the supply voltage or by switching the Trigger pulse for the thyristor off and on.

In diesem Zusammenhang ist es vorteilhaft die Merkmale des Anspruches 2 vorzusehen.In this context, it is advantageous to provide the features of claim 2.

Die Erfindung wird nun anhand der Zeichnung näher erläutert. Dabei zeigen die Fig. 1 und 2 zwei verschiedene Ausführungsformen einer erfindungsgemäßen Zündschaltung.The invention will now be explained in more detail with reference to the drawing. 1 and 2 two different embodiments of an ignition circuit according to the invention.

Gleiche Bezugszeichen bedeuten in beiden Figuren gleiche Einzelteile.The same reference numerals mean the same individual parts in both figures.

Bei der Ausführungsform nach der Fig. 1 ist an einen Netzanschluß L ein Widerstand R100 angeschlossen, dem eine Diode D100 nachgeschaltet ist. An diese und dem zweiten Netzanschluß N ist ein Thyristor T100, ein zu diesem parallel geschalteter Widerstand R101, eine zu diesem parallel geschaltete Freilaufdiode D101 und eine ebenfalls parallgeschaltete Reihenschaltung angeschlossen. Diese Reihenschaltung ist durch eine Primärspule 1 eines Übertragers U100 und einen Kondensator C100 gebildet.In the embodiment according to FIG. 1, a resistor R100 is connected to a mains connection L. connected, which is followed by a diode D100. To this and the second Mains connection N is a thyristor T100, a resistor R101 connected in parallel to this, one freewheeling diode D101 connected in parallel with this and one also connected in parallel Series connection connected. This series connection is one by a primary coil 1 Transformer U100 and a capacitor C100 formed.

An die Sekundärspule 2 des Übertragers U100 sind Zündelektroden Z1, Z2 angeschlossen, die im Bereich eines nicht dargestellten Gasbrenners angeordnet sind.Ignition electrodes Z1, Z2 are connected to the secondary coil 2 of the transformer U100, which are arranged in the area of a gas burner, not shown.

Zwischen dem Widerstand R100 und der Diode D100 ist eine mit dem zweiten Netzanschluß N verbundene Spannungsteilerschaltung angeschlossen, die durch die Widerstände R106 und R110 gebildet ist. An der Verbindung dieser beiden Widerstände R106 und R110 ist die Basis eines pnp-Transistors T101 und eine aus einer Diode D102 und einem Widerstand R114 gebildete Reihenschaltung angeschlossen. Dabei ist an diese Reihenschaltung der Emitter des Transistors T101 und ein Kondensator C101 angeschlossen, der mit dem zweiten Netzanschluß N verbunden ist.Between the resistor R100 and the diode D100 is one with the second mains connection N connected voltage divider circuit connected by the resistors R106 and R110 is formed. At the connection of these two resistors R106 and R110 is the Base of a pnp transistor T101 and one of a diode D102 and a resistor R114 series connection connected. This series connection is the Emitter of transistor T101 and a capacitor C101 connected to the second network connection N is connected.

Der Kollektor des Transistors T101 ist über einen Widerstand R102 mit dem Gateanschluß des Thyristors T101 verbunden.The collector of transistor T101 is connected to the gate terminal via a resistor R102 of the thyristor T101 connected.

Die Ausführungsform nach der Fig. 2 unterscheidet sich von jener nach der Fig. 1 dadurch, daß parallel zum Kondensator C101, der mit dem Emitter des Transistors T101 verbunden ist, ein weiterer Transistor T102 parallel geschaltet ist. Dabei ist die Basis dieses Transistors T102 einerseits über einen Widerstand R113 mit der Diode D102 und dem zu dieser in Reihe geschalteten Widerstand R114 und mit einem Optokoppler IC100 verbunden, dessen Hauptstromstecke, bzw. Emitter mit dem zweiten Netzanschluß N verbunden ist.The embodiment according to FIG. 2 differs from that according to FIG. 1 in that that parallel to capacitor C101, which is connected to the emitter of transistor T101 is, another transistor T102 is connected in parallel. Here is the base of this transistor T102 on the one hand via a resistor R113 with the diode D102 and in series with this switched resistor R114 and connected to an optocoupler IC100, the Main current path, or emitter is connected to the second network connection N.

Der Steuereingang des Optokopplers IC100 ist über einen Widerstand R112 mit einer Steuerspannung UB verbunden, wobei die Leuchtdiode des Optokopplers IC100 weiter mit einem Steueranschluß OFF verbunden ist. The control input of the optocoupler IC100 is connected to a via a resistor R112 Control voltage UB connected, the LED of the optocoupler IC100 continues with is connected to a control terminal OFF.

Bei der Zünderschaltung nach der Fig. 1 und 2 wird der Triggerimpuls für den Thyristor T100, der zur Steuerung des Übertragers U100 dient, kurz vor Beginn jeder negativen Halbwelle der Versorgungs-Wechselspannung zwischen den Netzanschlüssen L und N erzeugt.1 and 2, the trigger pulse for the thyristor T100, which is used to control the U100 transmitter, shortly before the start of each negative half-wave of the AC supply voltage between the network connections L and N.

Der Zündfunke zwischen der Zündelektrode Z1 und der Zündelektrode 2 wird durch Entladung eines Kondensators C100 durch die Primärwicklung eines Übertragers U100 erzeugt. Als Schaltelement dient dabei der Thyristor T100, wobei die zu diese, parallel geschaltete Diode D101 als Freilaufdiode dient. Der Widerstand R101 entlädt den Kondensator C100 nach dem Abschalten der Spannungsversorgung.The ignition spark between the ignition electrode Z1 and the ignition electrode 2 is through Discharge of a capacitor C100 through the primary winding of a transformer U100 generated. The thyristor T100 serves as the switching element, with the parallel to this switched diode D101 serves as a freewheeling diode. The resistor R101 discharges the Capacitor C100 after switching off the power supply.

Während der positiven Halbwelle der Versorgungsspannung wird über den Widerstand R100 und die Diode D100 der Kondensator C100 geladen. Die benötigte Energie für den Zündimpuls, der über den Übertrager U100 auf die Elektroden übertragen wird, ist dann im Kondensator C100 gespeichert.During the positive half-wave of the supply voltage, the resistor R100 and the diode D100 the capacitor C100 charged. The energy required for the Ignition pulse, which is transmitted to the electrodes via the transformer U100, is then in the Capacitor C100 saved.

Gleichzeitig wird über die Widerstände R100 und R106, die Diode D102 und den Widerstand R114 der Kondensator C101 geladen. Über den Spannungsteiler, der durch die Widerstände R100 und R106 einerseits und den Widerstand R110 gebildet ist, wird die Spannung an dem Kondensator C101 begrenzt. Während der Ladezeit des Kondensators C101 sperrt der Transistor T101, da das Basispotential des pnp-Transistors über dessen Emitterpotential liegt. Mit Ende der positiven Halbwelle der Versorgungsspannung wird das Basispotential kleiner als das Emitterpotential des Transistors T101, das durch den Kondensator C101 auf positivem Potential gehalten wird. Der Transistor T101 wird daher leitend und bleibt in diesem Schaltzustand während der negativen Halbwelle der Versorgungsspannung.At the same time, the resistors R100 and R106, the diode D102 and the resistor R114 the capacitor C101 charged. Via the voltage divider through the resistors R100 and R106 one hand and resistor R110 is formed, the voltage across the Capacitor C101 limited. During the charging time of the capacitor C101 the Transistor T101, since the base potential of the pnp transistor is above its emitter potential lies. At the end of the positive half-wave of the supply voltage, the base potential becomes less than the emitter potential of transistor T101, which is caused by capacitor C101 positive potential is maintained. The transistor T101 therefore becomes conductive and remains in this switching state during the negative half-wave of the supply voltage.

Dies führt dazu, daß der Kondensator C101 sich über den Widerstand R102 in den Triggeranschluß des Thyristors T100 entlädt und diesen zündet. Jetzt wird, wie oben erwähnt, der Kondensator C100 über die Primärspule 1 des Übertragers U100 entladen. Der Spannungsimpuls wird über die Sekundärspule 2 des Übertragers U100 hochtransformiert und zwischen den beiden Zündelektroden Z1, Z2 bildet sich eine Funkenstrecke aus.This leads to the capacitor C101 being connected via the resistor R102 The trigger connection of the T100 thyristor discharges and ignites it. Now, as above mentioned, the capacitor C100 discharged through the primary coil 1 of the transformer U100. The The voltage pulse is stepped up via the secondary coil 2 of the transformer U100 and a spark gap is formed between the two ignition electrodes Z1, Z2.

In Fig.2 ist beispielhaft dargestellt, wie durch Kurzschließen des Kondensators C101, was durch den zu diesem parallel geschalteten Transistor T102 möglich ist, die Ausbildung eines Zündimpulses unterbunden werden kann. Die Zündung kann natürlich auch durch Schalten der Versorgungs-Wechselspannung L N über ein Relais oder einen Optotriac ebenfalls einund ausgeschaltet werden.2 shows an example of what happens by short-circuiting the capacitor C101 through the transistor T102 connected in parallel with this, the formation of a Ignition pulse can be prevented. The ignition can of course also be switched the supply alternating voltage L N via a relay or an optotriac as well turned off.

Bei dem in der Fig. 2 dargestellten Ausführungsbeispiel erfolgt das Schalten des Transistors T102 über einen Optokoppler IC100, wobei die Basis des Transistors T102 über den Widerstand R113 bei nicht durchgeschaltetem Optokoppler IC100 während der positiven Halbwelle der Versorgungsspannung auf einem gegenüber dem Emitter des Transistors T101 höheren Potential gehalten ist und daher leitend geschaltet ist und sich daher der Kondensator C101 nicht aufladen kann. Damit kann bei der folgenden negativen Halbwelle der Versorgungsspannung der Transistor T101 zwar durchschalten, aber der Thyristor T100 kann nicht gezündet werden, da sich C101 über R102 entladen kann. Somit kann sich auch der Kondensator C100 nicht entladen.In the exemplary embodiment shown in FIG. 2, the transistor is switched T102 via an optocoupler IC100, the base of transistor T102 via the Resistor R113 if the optocoupler IC100 is not switched through during the positive Half wave of the supply voltage on one opposite the emitter of the transistor T101 is held higher potential and is therefore switched on and therefore the Capacitor C101 cannot charge. With that the following negative half-wave of the supply voltage of the transistor T101, but the thyristor T100 cannot be ignited because C101 can discharge via R102. So can also the capacitor C100 does not discharge.

Wird dagegen der Steueranschluß OFF an Masse gelegt, so kommt es zu einem Stromfluß über die Leuchtdiode des Optokopplers IC100 und dieser schaltet durch, wodurch die Basis des Transistors T102 im wesentlichen auf das Potential dessen Emitters gelegt wird und der Transistor T102 sperrt. Dadurch kann sich der Kondensator C101 während der positiven Halbwelle aufladen und der Transistor T101 während der folgenden negativen Halbwelle durchschalten und durch Entladen von C101 einen Zündimpuls auslösen.If, on the other hand, the control connection OFF is connected to ground, a current flows via the light emitting diode of the optocoupler IC100 and this switches through, creating the base of the transistor T102 is essentially set to the potential of its emitter and the Transistor T102 blocks. This can cause capacitor C101 to become positive Charge half wave and transistor T101 during the following negative half wave switch through and trigger an ignition pulse by discharging C101.

Die vorgeschlagenen Zündschaltungen zeichnen sich durch nur wenige, einfache Bauteile und damit einen geringen Platzbedarf, sowie einer hohe Zuverlässigkeit aus.The proposed ignition circuits are characterized by only a few simple components and thus a small space requirement and high reliability.

Claims (2)

Zündschaltung zur Versorgung einer Zündelektrode, insbesondere für die Zündung einer Gasflamme, bei welcher Zündschaltung einen Übertrager (U100) aufweist, dessen Primärspule (1) über eine Impulsgeberschaltung ansteuerbar ist, wobei die Zündelektrode (Z1, Z2) an die Sekundärspule (2) des Übertragers (U100) angeschlossen ist und einen mit der Primärwicklung (1) verbundenen Kondensator (C100) aufweist, der über einen Thyristor (T100) entladbar ist, dadurch gekennzeichnet, daß der Kondensator (C100) in Reihe mit der Primärspule (1) geschaltet ist und der Thyristor (T100) parallel zu dieser Reihenschaltung (1, C100) geschaltet und über einen Widerstand (R100) und eine Diode (D100) mit Netzanschlüssen (L, N) verbunden ist und der Triggeranschluß des Thyristors (T100) über einen an den Mittenanschluß einer Spannungsteilerschaltung (R100, R106; R110) angeschlossene R/C- Schaltung (R114, C101) gesteuerten Transistor (T101) gesteuert ist, der an den Kondensator (C101) dieser R/C-Schaltung angeschlossen ist und dessen Basisanschluß mit dem Mittenanschluß der Spannungsteilerschaltung (R100, R106; R110) verbunden ist. Ignition circuit for supplying an ignition electrode, in particular for igniting a gas flame, in which the ignition circuit has a transformer (U100) whose primary coil (1) can be controlled via a pulse generator circuit, the ignition electrode (Z1, Z2) being connected to the secondary coil (2) of the transformer (U100) is connected and has a capacitor (C100) connected to the primary winding (1) which can be discharged via a thyristor (T100), characterized in that the capacitor (C100) is connected in series with the primary coil (1) and the thyristor (T100) is connected in parallel to this series circuit (1, C100) and is connected to mains connections (L, N) via a resistor (R100) and a diode (D100) and the trigger connection of the thyristor (T100) is connected to the center connection a voltage divider circuit (R100, R106; R110) connected R / C circuit (R114, C101) controlled transistor (T101), which is connected to the capacitor (C101) thereof R / C circuit is connected and its base connection with the center connection of the voltage divider circuit (R100, R106; R110) is connected. Zündschaltung nach Anspruch 1, dadurch gekennzeichnet, daß ein weiterer Transistor (T102) parallel zu jenem Kondensator (C101) geschaltet ist, der an den den Triggeranschluß des Thyristors (T100) steuernden Transistor (T101) angeschlossen ist, wobei der Basisanschluß dieses weiteren Transistors (T102) über einen Widerstand (R113) mit dem Mittenanschluß des Spannungsteilers (R100, R106; R110) in Verbindung steht und weiter mit einem Schaltbauteil (IC100) verbunden ist.Ignition circuit according to Claim 1, characterized in that a further transistor (T102) is connected in parallel to that capacitor (C101) which is connected to the transistor (T101) controlling the trigger connection of the thyristor (T100), the base connection of this further transistor ( T102) is connected via a resistor (R113) to the center connection of the voltage divider (R100, R106; R110) and is further connected to a switching component (IC100).
EP20010127984 2000-12-01 2001-11-24 Supply circuit for an ignition electrode Expired - Lifetime EP1211462B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10061256 2000-12-01
DE10061256 2000-12-01
AT8632001 2001-06-05
AT0086301A AT410969B (en) 2001-06-05 2001-06-05 Ignition circuit for supplying power to ignition electrode such as for igniting gas flame, comprises transistor connected to RC circuit which is connected to middle terminal of voltage divider

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EP1211462A2 true EP1211462A2 (en) 2002-06-05
EP1211462A3 EP1211462A3 (en) 2006-05-31
EP1211462B1 EP1211462B1 (en) 2007-11-28

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2336192A1 (en) * 1972-07-20 1974-02-07 Ind Copreci S C I ELECTRONIC IGNITION DEVICE FOR GAS APPLIANCES
GB1539455A (en) * 1976-12-06 1979-01-31 Maruyama Inc Battery operated gas lighter
JPS5883123A (en) * 1981-11-13 1983-05-18 Hitachi Ltd Ignitor
US4521825A (en) * 1982-10-20 1985-06-04 Technical Components Pty. Ltd. Gas ignition circuits

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2336192A1 (en) * 1972-07-20 1974-02-07 Ind Copreci S C I ELECTRONIC IGNITION DEVICE FOR GAS APPLIANCES
GB1539455A (en) * 1976-12-06 1979-01-31 Maruyama Inc Battery operated gas lighter
JPS5883123A (en) * 1981-11-13 1983-05-18 Hitachi Ltd Ignitor
US4521825A (en) * 1982-10-20 1985-06-04 Technical Components Pty. Ltd. Gas ignition circuits

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 007, Nr. 179 (M-234), 9. August 1983 (1983-08-09) & JP 58 083123 A (HITACHI SEISAKUSHO KK), 18. Mai 1983 (1983-05-18) *

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EP1211462B1 (en) 2007-11-28
DE50113319D1 (en) 2008-01-10
DE10159031A1 (en) 2002-09-05
EP1211462A3 (en) 2006-05-31

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