JPS6077291U - switching power supply circuit - Google Patents

switching power supply circuit

Info

Publication number
JPS6077291U
JPS6077291U JP16902983U JP16902983U JPS6077291U JP S6077291 U JPS6077291 U JP S6077291U JP 16902983 U JP16902983 U JP 16902983U JP 16902983 U JP16902983 U JP 16902983U JP S6077291 U JPS6077291 U JP S6077291U
Authority
JP
Japan
Prior art keywords
power supply
input voltage
supply circuit
switching power
current limiting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP16902983U
Other languages
Japanese (ja)
Other versions
JPS644310Y2 (en
Inventor
光太郎 小川
Original Assignee
日本電気ホームエレクトロニクス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電気ホームエレクトロニクス株式会社 filed Critical 日本電気ホームエレクトロニクス株式会社
Priority to JP16902983U priority Critical patent/JPS6077291U/en
Publication of JPS6077291U publication Critical patent/JPS6077291U/en
Application granted granted Critical
Publication of JPS644310Y2 publication Critical patent/JPS644310Y2/ja
Granted legal-status Critical Current

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  • Protection Of Static Devices (AREA)
  • Dc-Dc Converters (AREA)
  • Electronic Switches (AREA)

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、本考案のスイッチング電源回路の一実施例を
示す概略構成図、第２図は、第１図に示した電流制限抵
抗回路の一実施例を示す回路図である。 １・・・スイッチング電源回路、２・・・交流電源、３
・・・全波整流回路、ｃｏ・・・平滑用コンデンサ、４
・・・パルストランス、Ｑｏ・・・スイッチングトラン
ジスタ、６・・・電流制限抵抗回路、６ａ・・・抵抗値
切り換え回路、６ｂ・・・定電圧回路、６ｃ・・・入力
電圧判別回路。FIG. 1 is a schematic configuration diagram showing one embodiment of the switching power supply circuit of the present invention, and FIG. 2 is a circuit diagram showing one embodiment of the current limiting resistor circuit shown in FIG. 1. 1... Switching power supply circuit, 2... AC power supply, 3
...Full wave rectifier circuit, co...Smoothing capacitor, 4
... Pulse transformer, Qo... Switching transistor, 6... Current limiting resistance circuit, 6a... Resistance value switching circuit, 6b... Constant voltage circuit, 6c... Input voltage discrimination circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 全波整流回路滑された入力電圧を、電流制限抵抗を介し
てベースに供給されるスイッチングトランジスタと、該
スイッチングトランジスタによって励振に必要な励磁電
流が制御されるトランスと、前記入力電圧の大小を判別
し、入力電圧が大である場合は、前記電流制限抵抗の抵
抗値を大と“し、入力電圧が小である場合は、前記電流
制限抵抗の抵抗値を小とする電流制限抵抗回路とから構
成してなるスイッチング電源回路。A switching transistor supplies the smoothed input voltage to the base of the full-wave rectifier circuit via a current limiting resistor, a transformer in which the excitation current necessary for excitation is controlled by the switching transistor, and the magnitude of the input voltage is determined. When the input voltage is large, the resistance value of the current limiting resistor is made large, and when the input voltage is small, the resistance value of the current limiting resistor is made small. A switching power supply circuit consisting of:
JP16902983U 1983-10-31 1983-10-31 switching power supply circuit Granted JPS6077291U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16902983U JPS6077291U (en) 1983-10-31 1983-10-31 switching power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16902983U JPS6077291U (en) 1983-10-31 1983-10-31 switching power supply circuit

Publications (2)

Publication Number Publication Date
JPS6077291U true JPS6077291U (en) 1985-05-30
JPS644310Y2 JPS644310Y2 (en) 1989-02-03

Family

ID=30369371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16902983U Granted JPS6077291U (en) 1983-10-31 1983-10-31 switching power supply circuit

Country Status (1)

Country Link
JP (1) JPS6077291U (en)

Also Published As

Publication number Publication date
JPS644310Y2 (en) 1989-02-03

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