JPS63198472U

JPS63198472U -

Info

Publication number: JPS63198472U
Application number: JP8982987U
Authority: JP
Priority date: 1987-06-10
Filing date: 1987-06-10
Publication date: 1988-12-21

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す回路図、第
２図は同上実施例の動作を説明するための波形図
、第３図はこの考案の内燃機関点火装置の他の実
施例の要部の回路図、第４図は従来の内燃機関点
火装置の回路図、第５図および第６図はそれぞれ
従来の内燃機関の動作を説明するための波形図で
ある。１……ロータ、３……センサ、４……第１のダ
イオード、５……第２のダイオード、６……第３
のダイオード、９……第１のトランジスタ、１０
……第２のトランジスタ、１３……第３のトラン
ジスタ、１２……インバータ、１４……点火コイ
ル、１５……点火プラグ。なお、図中同一符号は
同一部分または相当部分を示す。 Fig. 1 is a circuit diagram showing one embodiment of this invention, Fig. 2 is a waveform diagram for explaining the operation of the same embodiment, and Fig. 3 is a summary of another embodiment of the internal combustion engine ignition system of this invention. FIG. 4 is a circuit diagram of a conventional internal combustion engine ignition system, and FIGS. 5 and 6 are waveform diagrams for explaining the operation of the conventional internal combustion engine. 1...Rotor, 3...Sensor, 4...First diode, 5...Second diode, 6...Third
diode, 9...first transistor, 10
... second transistor, 13 ... third transistor, 12 ... inverter, 14 ... ignition coil, 15 ... spark plug. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

a sensor that emits signals of mutually different polarities at first and second angular positions of the engine; first and second diodes connected to the output side of this sensor for discriminating the signals of mutually different polarities; and the first diode. An ignition device for an internal combustion engine comprising a transistor having a base-emitter circuit connected in series with the ignition device, characterized in that the ignition device includes a bias circuit connected between the output of the sensor and a power source to lower the starting rotation speed.