JPS5897992U

JPS5897992U - Voltage driven transistor power conversion circuit

Info

Publication number: JPS5897992U
Application number: JP19103481U
Authority: JP
Inventors: 関野　則忠; 島村　高
Original assignee: 新電元工業株式会社
Priority date: 1981-12-23
Filing date: 1981-12-23
Publication date: 1983-07-04
Also published as: JPS6227027Y2

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図は従来の回路側図、第２図は本案の一実施例回路
図である。１・・・主スイツチングトランジスタ、Ａ・・・駆動回
路、２・・・制御用トランジスタ、４・・・駆動電源、
５・・・駆動トランス、５ａ、５ｂ、５ｃおよび１５・
・・１次、２次、帰還およびスイッチ起動信号取得巻線
、６・・・べｉス抵抗、７・・・スピードアップ用コン
デンサ、８・・・帰還用ダイオニド、９・・・極性選択
回路（ダイオード）、１０・・・主直流電源、１１・・
・出カドランス、１１ａ、　　１　ｌｂ、　２１−１次
、２次、逆バイアス電圧取得巻線、１２・・・負荷回路
、１６・・・極性選択ダイオード、１７・・・抵抗、１
８・・・高速高入力インピーダンスのスイッチング素子
、１９・・・抵抗、２０・・・コンデンサ、２２・・・
極性選択ダイオード、２３・・・逆バイアス電圧保持用
ダイオード、２４・・・抵抗。FIG. 1 is a side view of a conventional circuit, and FIG. 2 is a circuit diagram of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Main switching transistor, A... Drive circuit, 2... Control transistor, 4... Drive power supply,
5... Drive transformer, 5a, 5b, 5c and 15.
・・Primary, secondary, feedback and switch start signal acquisition windings, 6・Base resistance, 7・Speed-up capacitor, 8・Feedback dionide, 9・Polarity selection circuit (diode), 10... Main DC power supply, 11...
・Output transformer, 11a, 1 lb, 21-primary, secondary, reverse bias voltage acquisition winding, 12... Load circuit, 16... Polarity selection diode, 17... Resistor, 1
8... High speed, high input impedance switching element, 19... Resistor, 20... Capacitor, 22...
Polarity selection diode, 23... Reverse bias voltage holding diode, 24... Resistor.

Claims

[Scope of utility model registration request]

In a two-voltage drive type transistor power conversion circuit, a polarity selection circuit is provided in series with the secondary winding of the drive transformer connected to the base of the main switching transistor, and a reverse bias voltage acquisition winding provided on the output transformer is used to select the main switch. A reverse bias voltage acquisition circuit generates and maintains a reverse bias voltage from the main power supply during the ON period of the controlling transistor, and a switch activation signal acquisition winding provided in the drive transformer detects the voltage generated in the drive transformer when the control transistor is OFF. A high input impedance reverse bias control switch circuit that is turned on by a flyback voltage and connects the retained reverse bias voltage of the reverse bias voltage acquisition circuit between the base and emitter of the main switching transistor is provided, and the polarity selection circuit When the control transistor of the drive circuit is off, the secondary winding circuit of the drive transformer is set to high impedance, and only a reverse bias voltage is supplied to the main switching transistor by the flyback voltage, and the reverse bias is maintained by the holding voltage of the reverse bias voltage acquisition circuit. A voltage-driven transistor power conversion circuit characterized in that a main switching transistor is turned off by supplying current.