JPS6014686U

JPS6014686U - switching regulator

Info

Publication number: JPS6014686U
Application number: JP10561083U
Authority: JP
Inventors: 森脇　祐一
Original assignee: シャープ株式会社
Priority date: 1983-07-07
Filing date: 1983-07-07
Publication date: 1985-01-31

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図は従来例の電気回路図、第２図は本考案の一実施
例の電気回路図、第３図は出力用トランザスタのコレク
タ電流対コレクタ電圧の関係をソフトスターター回路が
有る場合と無い場合とについて示す図である。Ｄｏ・・・・・・ブリッジ形整流用回路、Ｔ□・・・・
・・トランス、Ｌｌ・・・・・・１次側巻線、Ｌ２・・
・・・・２次側巻線、Ｌ３・・・・・・ドライブ用巻線
、Ｔｒｌ・・・・・・出力用トランジスタ、Ａ・・・・
・・放電時定数回路、Ｂ・・・リセット回路、Ｃ・・・
・・・ソフトスタータ回路。Figure 1 is an electric circuit diagram of a conventional example, Figure 2 is an electric circuit diagram of an embodiment of the present invention, and Figure 3 shows the relationship between collector current and collector voltage of an output transistor with and without a soft starter circuit. FIG. Do...Bridge type rectifier circuit, T□...
...Transformer, Ll...Primary winding, L2...
...Secondary winding, L3...Drive winding, Trl...Output transistor, A...
...Discharge time constant circuit, B...Reset circuit, C...
...Soft starter circuit.

Claims

[Scope of utility model registration request]

A transformer is provided, the current output part of the AC power source and the output part of the output transistor are connected via the primary winding of the transformer, and a rectifier/smoothing circuit is connected to the secondary winding of the transformer. In the switching regulator, the switching regulator has means for detecting the voltage on the secondary side of the transformer and bypassing the base current of the output transistor in order to keep the output on the secondary side constant according to the detected voltage, the bypass operation of the bypass means. has a soft starter circuit that is activated when there is a sudden change in the output of the rectifier output section, and this soft starter circuit charges an electric charge due to the bypass operation current of the bypass means to enable the bypass operation of the bypass means. A switching regulator comprising a charge/discharge time constant circuit including a capacitor, and a circuit that detects sudden fluctuations in the output of a rectifier output section, and uses the detection output to discharge the charge of the capacitor to reset the charge state of the capacitor.