JPS58183083U

JPS58183083U - Inrush current limit circuit

Info

Publication number: JPS58183083U
Application number: JP7873482U
Authority: JP
Inventors: 健治松田
Original assignee: ユ−ザツク電子工業株式会社
Priority date: 1982-05-28
Filing date: 1982-05-28
Publication date: 1983-12-06

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図は本考案の突入電流制限回路を用いたスイッチン
グ・レギュレータを示す図・第２図は本　□考案の突入
電流制限回路の詳細を示す図である。１・・・突入電流制限回路、２・・・スイッチング・コ
ントロール回路、Ｔ□・・・高周波１ランス、Ｔ２・・
・補助トランス、Ｒｆ□ないしＲｆ３・・・整流回路、
Ｄ□ないしＤ３・・・ダイオード、Ｄｚ・・・定電圧ダ
イオード、Ｌ・・・リアクトル、ＴＲ・・・トライアッ
ク、ＳＣＲ・・・サイリスタ、Ｑ□ないしＱ４・・・ト
ランジスタ、ＰＩ・・・フォト・カプラ、Ｒ工ないしＲ
９・・・抵抗、Ｃ工ないしＣ５・・・コンデンサ。Fig. 1 is a diagram showing a switching regulator using the inrush current limiting circuit of the present invention, and Fig. 2 is a diagram showing details of the inrush current limiting circuit of the present invention. 1... Inrush current limiting circuit, 2... Switching control circuit, T□... High frequency 1 lance, T2...
・Auxiliary transformer, Rf□ or Rf3... rectifier circuit,
D□ to D3...diode, Dz...constant voltage diode, L...reactor, TR...triac, SCR...thyristor, Q□ to Q4...transistor, PI...photo Coupler, R work or R
9...Resistor, C or C5...Capacitor.

Claims

[Scope of utility model registration request]

An AC power source, a rectifier circuit connected to the AC power source, a smoothing capacitor connected between the DC output terminals of the rectifier circuit, a voltage adjustment switching element and a load circuit connected in parallel to the capacitor. a series circuit, a switching control circuit for controlling the switching of the voltage regulating switching element, an inrush current limiting resistor connected in series to the alternating current or direct current side of the rectifying circuit, and a resistor connected in parallel with the resistor. A switching regulator comprising: a current limit release switching element; and an inrush current limit circuit that turns on the current limit release switching element with a time delay after turning on the AC power; An inrush current limiting circuit characterized in that an inrush current limiting circuit is provided with an operation start means for putting the switching control circuit into an operating state when the inrush current limiting circuit turns on the switching element for canceling the current limit.