JPS58185761U

JPS58185761U - Ignition device drive circuit

Info

Publication number: JPS58185761U
Application number: JP8147282U
Authority: JP
Inventors: 徹下村; 村重　伸一; 武山田
Original assignee: オムロン株式会社
Priority date: 1982-05-31
Filing date: 1982-05-31
Publication date: 1983-12-09

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図および第３図は従来の点火装置駆動回路の回路図
である。第２図および第４図は第１図および第３図に示
す従来の点火装置駆動回路のコンデンサへの充電放電電
圧特性波形図である。第５図はこの考案の一実施例であ
り、スイッチング素子にフォトトライアックカプラを用
いた点火装置駆動回路の回路図である。第６図は第６図
に示すこの考案の一実施例の点火装置駆動回路のコンデ
ンサの充電放電電圧特性波形図である。第７図はこの考
案の他の実施例であり、スイッチング素子にフォトサイ
リスタカプラを用いた点火装置駆動回路の回路図である
。図において、２′は整流用ダイオード、３はコンデンサ
、９は昇圧トランス、１０はフライホイールダイオード
、１１は点火電極、２２はフォトトライアックカプラ、
２４は発光ダイオード、２５はフォトトライアック、３
１はフォトサイリスタカプラ、３３は発光ダイオード、
３４はフォトサイリスタを示す。　　　　　　　　　　
　　　　゛實ア犬」−−］−９−1 and 3 are circuit diagrams of conventional ignition device drive circuits. FIGS. 2 and 4 are waveform diagrams of charging/discharging voltage characteristics to a capacitor of the conventional ignition device drive circuit shown in FIGS. 1 and 3. FIG. 5 is an embodiment of this invention, and is a circuit diagram of an ignition device drive circuit using a phototriac coupler as a switching element. FIG. 6 is a waveform diagram of charging/discharging voltage characteristics of a capacitor in the ignition device drive circuit according to an embodiment of the present invention shown in FIG. FIG. 7 shows another embodiment of this invention, and is a circuit diagram of an ignition device drive circuit using a photothyristor coupler as a switching element. In the figure, 2' is a rectifier diode, 3 is a capacitor, 9 is a step-up transformer, 10 is a flywheel diode, 11 is an ignition electrode, 22 is a phototriac coupler,
24 is a light emitting diode, 25 is a phototriac, 3
1 is a photothyristor coupler, 33 is a light emitting diode,
34 indicates a photothyristor.
゛Actually a dog'--]-9-

Claims

[Scope of utility model registration request]

(1) A photocoupler consisting of a capacitor connected to an AC power source via a rectifying unidirectional conductive element, a light emitting means that emits a light control signal, and a light responsive switching element that conducts in response to the light control signal; a transformer having a secondary winding connected to an ignition electrode, the light-responsive switching element is connected in parallel with the capacitor, and the light-emitting means is arranged to be able to transmit an optical signal to the light-responsive switching element. and is connected to the alternating current power source so as to emit light when the alternating current power source is in a negative half wave, and the primary winding of the transformer is inserted into a closed circuit composed of the capacitor and the photoresponsive switching element. Ignition device drive circuit.

(2) The ignition device drive circuit according to claim 1, wherein the photoresponsive switching element is a bidirectional photoresponsive switching element.

(3) The ignition device drive circuit according to claim 2, wherein the bidirectional photoresponsive switching element is a phototriac. −

(4) Utility model registration term characterized in that the photoresponsive switching element has a photothyristor.
The ignition device drive circuit according to claim 1.