JPS59180535U

JPS59180535U - GTO gate drive circuit

Info

Publication number: JPS59180535U
Application number: JP7432083U
Authority: JP
Inventors: 足利　正
Original assignee: 株式会社明電舎
Priority date: 1983-05-18
Filing date: 1983-05-18
Publication date: 1984-12-03

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図は従来例を示す回路図、第２図は第１図の動作を
述べるための波形図、第３図はこの考案の一実施例を示
す回路図、第４図は第３図の動作を述べるための波形図
、第５図は限流リアクトルの変形例を示す概略構成図で
ある。１・・・ＧＴＯ１４・・・第１電源、６・・・第１トラ
ンジスタ、７・・・コンデンサ、９・・・第２電源、１
０・・・第２トランジスタ、１１・・・限流リアクトル
、１５・・・第３トランジスタ、１７・・・ダイオード
。Fig. 1 is a circuit diagram showing a conventional example, Fig. 2 is a waveform diagram to explain the operation of Fig. 1, Fig. 3 is a circuit diagram showing an embodiment of this invention, and Fig. 4 is a circuit diagram of Fig. 3. FIG. 5 is a waveform diagram for describing the operation, and a schematic configuration diagram showing a modification of the current limiting reactor. 1... GTO14... First power supply, 6... First transistor, 7... Capacitor, 9... Second power supply, 1
0... Second transistor, 11... Current limiting reactor, 15... Third transistor, 17... Diode.

Claims

[Scope of utility model registration request]

a first switching element inserted in a circuit that supplies the gate-on current of the GTO; a second switching element inserted in the circuit that supplies the gate-on current of the GTO; and a first switching element provided on the anode side of the GTO. , a current limiting reactor in which a predetermined voltage is generated in the winding when the main circuit current of the GTO rises after turning on the first switching element;
a third switching element that is controlled by the voltage generated in the winding of the reactor and supplies a gate current that guarantees di/dt to the gate of the GTO through the first switching element.