JPS6027537U

JPS6027537U - transistor drive circuit

Info

Publication number: JPS6027537U
Application number: JP11877183U
Authority: JP
Inventors: 由宇　義珍
Original assignee: 三菱電機株式会社
Priority date: 1983-07-28
Filing date: 1983-07-28
Publication date: 1985-02-25
Also published as: JPH0326679Y2

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図は従来のトランジスタのドライブ回路を示す回路
図、第２区は第１図の等価回路を示す図、第３図ａ〜第
３図ｄはそれぞれ第１図の各部の波形を示す図、第４図
はこの考案に係るトランジスタのドライブ回路の一実施
例を示す回路図、第５図は第４図の等価回路を示す図、
第６図ａ〜第６図ｅはそれぞれ第４図の各部の波形を示
す図である。１・・・・・・主トランジスタ、２ａおよび２ｂ・・・
・・・トランジスタ、３・・・・・・ダイオード、４・
・・・・・抵抗、５・・・・・・ドライブ段のトランジ
スタ、６・・・・・・ノード、７・・・・・・ダイオー
ド、８・・・・・・ベース正バイアス型−源、９・・・
・・・ノード、１０・・・・・・抵抗、１１・・・・・
・トランジスタ、１２・・・・・・ベース負バイアスｔ
ｉ、１３・・・・・・トランジスタ、１４・・・・・・
主電源、１５・・・・・・負荷、１６・・・・・・抵抗
、１７・・・・・・トランジスタ。なお、図中、同一符
号は同一または相当部分を示す。Fig. 1 is a circuit diagram showing a conventional transistor drive circuit, Section 2 is a diagram showing an equivalent circuit of Fig. 1, and Figs. 3a to 3d are diagrams showing waveforms of each part of Fig. 1. , FIG. 4 is a circuit diagram showing an embodiment of a transistor drive circuit according to this invention, and FIG. 5 is a diagram showing an equivalent circuit of FIG. 4.
FIGS. 6a to 6e are diagrams showing waveforms at various parts in FIG. 4, respectively. 1... Main transistor, 2a and 2b...
...Transistor, 3...Diode, 4.
... Resistor, 5 ... Drive stage transistor, 6 ... Node, 7 ... Diode, 8 ... Base positive bias type - source ,9...
...Node, 10...Resistance, 11...
・Transistor, 12...Base negative bias t
i, 13...transistor, 14...
Main power supply, 15...Load, 16...Resistor, 17...Transistor. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A Darlington-connected main transistor, a drive stage transistor that drives this main transistor, a circuit that alternately applies positive and negative bias between the base and emitter of this drive stage transistor, and a collector connected to the main transistor. the emitter is connected to the emitter of the transistor of the drive stage;
A transistor drive circuit comprising a transistor whose base is connected to the base of the transistor in the drive stage via a resistor, and which shorts between the base and emitter of the main transistor when turned on.