JPS6044487U

JPS6044487U - switching regulator

Info

Publication number: JPS6044487U
Application number: JP13445783U
Authority: JP
Inventors: 塚本　章人
Original assignee: アルプス電気株式会社
Priority date: 1983-09-01
Filing date: 1983-09-01
Publication date: 1985-03-28

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図は従来例のスイッチングレギュレータの回路図、
第２図は本考案の実施例の回路図を示すものである。１はダイオードブリッジ、２は平滑用のコンデ　゛ンサ
、３はサイリスタ、４は抵抗、５はトランス、６はトラ
ンジスタ、７はドライブトランス、８．９はダイオード
、１０はチョークコイル、１１はコンデンサ、１２は誤
差増幅器、１３はパルス幅変換回路、１４は基準電圧、
１５は結合トランス、１６は加算回路、１７は結合コン
デンサである。′Figure 1 is a circuit diagram of a conventional switching regulator.
FIG. 2 shows a circuit diagram of an embodiment of the present invention. 1 is a diode bridge, 2 is a smoothing capacitor, 3 is a thyristor, 4 is a resistor, 5 is a transformer, 6 is a transistor, 7 is a drive transformer, 8.9 is a diode, 10 is a choke coil, 11 is a capacitor, 12 is an error amplifier, 13 is a pulse width conversion circuit, 14 is a reference voltage,
15 is a coupling transformer, 16 is an adder circuit, and 17 is a coupling capacitor. ′

Claims

[Scope of utility model registration request]

An error amplifier that compares a DC output voltage with a reference voltage and outputs an error voltage, a pulse width conversion circuit that outputs a pulse with a pulse width corresponding to the error voltage of the output of the error amplifier, and an output of the pulse width conversion circuit. It is equipped with a transistor that turns on and off the current in the primary side of the transformer with a pulse, and a capacitor that smoothes the rectified voltage obtained by rectifying the AC voltage, and the rectified voltage smoothed by the capacitor is passed through the transistor to the primary side of the transformer. In the switching regulator applied to the side, an addition circuit is provided to add the ripple included in the rectified voltage smoothed by the capacitor to the error voltage of the output of the error amplifier and add it to the pulse width conversion circuit. switching regulator.