JPS61185291U

JPS61185291U -

Info

Publication number: JPS61185291U
Application number: JP6762685U
Authority: JP
Priority date: 1985-05-08
Filing date: 1985-05-08
Publication date: 1986-11-19

Description

[Brief explanation of the drawing]

第１図は本考案のコンバータを示す回路図、第
２図は第１図のコンバータを更に詳しく示す回路
図、第３図は従来のコンバータを示す回路図であ
る。２，２２……トランス、３，２３……スイツチ
ングトランジスタ、１４，３４……制御トランジ
スタ、１５……制御回路。 FIG. 1 is a circuit diagram showing the converter of the present invention, FIG. 2 is a circuit diagram showing the converter of FIG. 1 in more detail, and FIG. 3 is a circuit diagram showing a conventional converter. 2, 22...transformer, 3, 23...switching transistor, 14, 34...control transistor, 15...control circuit.

Claims

[Claims for Utility Model Registration] A pair of DC power supply terminals 1a, 1b, and a first transformer 2 whose one end is connected to one of the pair of DC power supply terminals 1a, 1b.
a first switching transistor 3 connected between the other end of the first primary winding 4 and the other of the pair of DC power supply terminals 1a, 1b; a first secondary winding 5 electromagnetically coupled to the primary winding 4 of the first switching transistor 3; a first starting circuit connected to the base of the first switching transistor 3; and a first starting circuit connected to the base of the first switching transistor 3; It includes a first tertiary winding 6 electromagnetically coupled to the wire 4 and the first secondary winding 5, and is configured to supply a base current based on the induced voltage of the first tertiary winding 6. a first base drive circuit connected to the base of the first switching transistor 3, the first secondary winding 5 and the DC output terminal 10a,
10b, the first rectifying and smoothing circuit 9 connected between
A second primary winding 24 of the second transformer 22, one end of which is connected to one of the pair of DC power terminals 1a, 1b, and the other end of the second primary winding 24. a second switching transistor 23 connected between the other of the pair of DC power supply terminals 1a and 1b; and a second switching transistor 23 electromagnetically coupled to the second primary winding 24.
a second starting circuit connected to the base of the second switching transistor 23; and an electromagnetic circuit connected to the second primary winding 24 and the second secondary winding 25. It includes a coupled second tertiary winding 26 and is connected to the base of the second switching transistor 23 so as to supply a base current based on the induced voltage of the second tertiary winding 26. a second base drive circuit that connects the second secondary winding 25 and the DC output terminal 1;
0a and 10b; a first control transistor 14 connected between the base and emitter of the first switching transistor 3; a second control transistor 34 connected between the base and emitter of the switching transistor 23 and whose base is commonly connected to the base of the first control transistor 14;
and the first and second control transistors 14, 3
Base current control circuit 15 connected to the base of 4
A self-excited converter consisting of and .