JPS584771U

JPS584771U - Non-contact ignition circuit for internal combustion engine

Info

Publication number: JPS584771U
Application number: JP8676982U
Authority: JP
Inventors: 渡辺　裕已
Original assignee: 追浜工業株式会社
Priority date: 1982-06-11
Filing date: 1982-06-11
Publication date: 1983-01-12

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図は本考案の一実施例を示すものであり、第１図は無接
点点火回路図、第２図ａ−ｄは上記回路　−。各部に於ける信号波形図であり、第２図ａはパワートラ
ンジスタのしゃ断が行われない場合に於ける１次巻線に
流れる電流波形図、第２図すはプログラマブル・ユニジ
ャンクション会トランジスタのアノード電圧波形図およ
びゲート電圧波形図、第２図Ｃはプログラマブル・ユニ
ジャンクション会トランジスタを流れる電流ＩＡの波形
図、第２図ｄはパワートランジスタのしゃ断時の１次コ
イルに流れる電流波形図である。　、１・・・イグニッションコイル、１ａ・・・１次巻線、
１ｂ・・・２次巻線、２・・・点火プラグ、７・・・パ
ワートランジスタ、８・・・抵抗、９・・・小信号用ト
ランジスタ、１１・・・プログラマブル・ユニジャンク
ション・トランジスタ、１２，１４．１５・・・抵抗、
１３・・・コンデンサ。The figures show one embodiment of the present invention, in which Fig. 1 is a non-contact ignition circuit diagram, and Figs. 2 a to 2 d are the circuits described above. Figure 2a is a diagram of the current waveform flowing through the primary winding when the power transistor is not cut off; Figure 2 is a diagram of the signal waveform at each part; A voltage waveform diagram and a gate voltage waveform diagram, FIG. 2C is a waveform diagram of the current IA flowing through the programmable unijunction transistor, and FIG. 2D is a current waveform diagram flowing through the primary coil when the power transistor is cut off. , 1...Ignition coil, 1a...Primary winding,
1b... Secondary winding, 2... Spark plug, 7... Power transistor, 8... Resistor, 9... Small signal transistor, 11... Programmable unijunction transistor, 12 ,14.15...Resistance,
13... Capacitor.

Claims

[Scope of utility model registration request]

Connect the collector and emitter of the power transistor to both ends of the primary winding of the ignition coil, respectively,
The base of this power transistor is connected to the collector of a small signal transistor whose collector and emitter are respectively connected to both ends of the primary winding via resistors, and the base of this small signal transistor is connected to a programmable φ unijunction transistor. A voltage divider circuit consisting of a resistor capacitor connected to the cathode and the anode and gate of the programmable unijunction transistor connected in parallel to the primary winding;
These two resistors are connected to a voltage divider circuit consisting of two resistors.
When the voltage division level of the capacitor exceeds the maximum value of the gate input by two resistor voltage divisions, the programmable
A non-contact ignition circuit for an internal combustion engine, characterized in that a unijunction transistor is rendered conductive.