JPS6425883U

JPS6425883U -

Info

Publication number: JPS6425883U
Application number: JP11501387U
Authority: JP
Priority date: 1987-07-29
Filing date: 1987-07-29
Publication date: 1989-02-14

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例に係る他励式スイ
ツチング電源装置の回路図、第２図及び第３図は
それぞれその動作特性図である。図において、１０は発振器、２０はコンパレー
タ、３０は基準電圧制御回路、Ｔはトランス、Ｑ
１はＦＥＴ、Ｑ２はトランジスタ、ＺＤ１はツエ
ナーダイオードである。 FIG. 1 is a circuit diagram of a separately excited switching power supply device according to an embodiment of the invention, and FIGS. 2 and 3 are diagrams of its operating characteristics. In the figure, 10 is an oscillator, 20 is a comparator, 30 is a reference voltage control circuit, T is a transformer, and Q
1 is an FET, Q2 is a transistor, and ZD1 is a Zener diode.

Claims

[Claims for Utility Model Registration] A transformer, a switching element connected in series to the primary side of the transformer, a resistance element connected in series to the switching element, and a triangular wave generation circuit,
a reference voltage setting circuit, a comparator that compares the output of the triangular wave generation circuit and the output of the reference voltage setting circuit, and controls a switching element based on the comparison result; and a voltage drop of the resistor element and a secondary voltage of the transformer. A separately excited switching power supply device comprising: a reference voltage control circuit that controls the output of a reference setting circuit based on;