JPS5875492U - Switching regulator protection circuit - Google Patents

Switching regulator protection circuit

Info

Publication number
JPS5875492U
JPS5875492U JP16918881U JP16918881U JPS5875492U JP S5875492 U JPS5875492 U JP S5875492U JP 16918881 U JP16918881 U JP 16918881U JP 16918881 U JP16918881 U JP 16918881U JP S5875492 U JPS5875492 U JP S5875492U
Authority
JP
Japan
Prior art keywords
switching regulator
voltage
protection circuit
transformer
transistor
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
JP16918881U
Other languages
Japanese (ja)
Other versions
JPS6219107Y2 (en
Inventor
武久 佐藤
Original Assignee
三洋電機株式会社
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 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP16918881U priority Critical patent/JPS5875492U/en
Publication of JPS5875492U publication Critical patent/JPS5875492U/en
Application granted granted Critical
Publication of JPS6219107Y2 publication Critical patent/JPS6219107Y2/ja
Granted legal-status Critical Current

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  • Power Conversion In General (AREA)
  • Dc-Dc Converters (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 the drawing]

第１・図は従来例を示す回路図、第２図は本考案の実施
例を示す回路図である。 １４・・・・・・整流平滑回路、１５・・・・・・フェ
ライトトランス、１６・・・・・・−スイッチングトラ
ンジスタ、１７・・・・・・発振回路、１８・・・・・
・パルス巾変調回路、１９・・・・・・整流平滑回路、
２０・・・・・・誤差検出回路、２２・・・・・・フォ
トカプラ、２６・曲・電流トランス、２７・・・・・・
整流平滑回路、２８・・・・・・ツェナーダイオード。1 is a circuit diagram showing a conventional example, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. 14... Rectifier smoothing circuit, 15... Ferrite transformer, 16... Switching transistor, 17... Oscillation circuit, 18...
・Pulse width modulation circuit, 19... Rectification smoothing circuit,
20...Error detection circuit, 22...Photocoupler, 26.Current transformer, 27.....
Rectifier smoothing circuit, 28... Zener diode.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 商用交流電源に接続された整流平滑回路と、該平滑回路
で得られた直流電圧を電源とし負荷をトランスとするト
ランジスタと、前記トランジスタの二次側出力電圧がフ
ォトカプラに依って伝達されその出力電圧に応じて前記
トランジスタを高周波パルスでスイッチング制御する制
御回路とを備えたスイッチングレギュレータに於いて、
前記トランスの二次側出力に電流トランスを接続し、該
電流トランスの出力を整流して得られた電圧を前記二次
側出力電圧を伝達するためのフォトカプラの発光ダイオ
ードに印加し、二次側に流れる過電流を防止することを
特徴とするスイッチングレギュレータの保護回路。A rectifying and smoothing circuit connected to a commercial AC power supply, a transistor whose power source is the DC voltage obtained by the smoothing circuit and a transformer as a load, and the secondary output voltage of the transistor is transmitted by a photocoupler and its output is In a switching regulator, the switching regulator includes a control circuit that controls switching of the transistor using high-frequency pulses depending on the voltage.
A current transformer is connected to the secondary output of the transformer, and a voltage obtained by rectifying the output of the current transformer is applied to a light emitting diode of a photocoupler for transmitting the secondary output voltage. A switching regulator protection circuit that prevents overcurrent from flowing to the side.
JP16918881U 1981-11-12 1981-11-12 Switching regulator protection circuit Granted JPS5875492U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16918881U JPS5875492U (en) 1981-11-12 1981-11-12 Switching regulator protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16918881U JPS5875492U (en) 1981-11-12 1981-11-12 Switching regulator protection circuit

Publications (2)

Publication Number Publication Date
JPS5875492U true JPS5875492U (en) 1983-05-21
JPS6219107Y2 JPS6219107Y2 (en) 1987-05-15

Family

ID=29961186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16918881U Granted JPS5875492U (en) 1981-11-12 1981-11-12 Switching regulator protection circuit

Country Status (1)

Country Link
JP (1) JPS5875492U (en)

Also Published As

Publication number Publication date
JPS6219107Y2 (en) 1987-05-15

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