JPS5923245U - Surge voltage suppression circuit of smoothing circuit - Google Patents

Surge voltage suppression circuit of smoothing circuit

Info

Publication number
JPS5923245U
JPS5923245U JP9819982U JP9819982U JPS5923245U JP S5923245 U JPS5923245 U JP S5923245U JP 9819982 U JP9819982 U JP 9819982U JP 9819982 U JP9819982 U JP 9819982U JP S5923245 U JPS5923245 U JP S5923245U
Authority
JP
Japan
Prior art keywords
circuit
voltage
surge voltage
smoothing
load
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.)
Pending
Application number
JP9819982U
Other languages
Japanese (ja)
Inventor
角田　義正
Original Assignee
株式会社日立国際電気
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 株式会社日立国際電気 filed Critical 株式会社日立国際電気
Priority to JP9819982U priority Critical patent/JPS5923245U/en
Publication of JPS5923245U publication Critical patent/JPS5923245U/en
Pending legal-status Critical Current

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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図は従来の電源整流平滑回路の一例図、第２図は本
考案のサージ電圧抑圧回路を用いた電源回路の一例図で
ある。 １・・・・・・電圧比較器、Ｑ□・・・・・・ＦＥＴト
ランジスタ、Ｒ・・・・・・負荷、ＣＲ１・・・・・・
定電圧ダイオード、Ｌ・・曲チョークコイル、ｃｏ・・
・・・・平滑用コンデンサ。FIG. 1 is an example diagram of a conventional power supply rectifying and smoothing circuit, and FIG. 2 is an example diagram of a power supply circuit using the surge voltage suppression circuit of the present invention. 1...Voltage comparator, Q□...FET transistor, R...Load, CR1...
Constant voltage diode, L... curved choke coil, co...
...Smoothing capacitor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 交流電源整流回路の平滑用チョークコイルと負荷との間
にチョークコイルの出力端電圧と設定標準電圧との差を
検出する電圧比較器と、この電圧比較器の出力電圧によ
って開閉され無負荷には導通して上記チョークコイルに
生ずるサージ電圧を抑圧すると共に、負荷正常時には電
流を流さぬスイッチングトランジスタとを具備したこと
を特徴とする平滑回路のサージ電圧抑圧回路。There is a voltage comparator between the smoothing choke coil of the AC power rectifier circuit and the load that detects the difference between the output end voltage of the choke coil and the set standard voltage, and a voltage comparator that is opened and closed by the output voltage of this voltage comparator and is turned off when there is no load. 1. A surge voltage suppression circuit of a smoothing circuit, comprising a switching transistor that is conductive to suppress the surge voltage generated in the choke coil and does not allow current to flow when the load is normal.
JP9819982U 1982-07-01 1982-07-01 Surge voltage suppression circuit of smoothing circuit Pending JPS5923245U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9819982U JPS5923245U (en) 1982-07-01 1982-07-01 Surge voltage suppression circuit of smoothing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9819982U JPS5923245U (en) 1982-07-01 1982-07-01 Surge voltage suppression circuit of smoothing circuit

Publications (1)

Publication Number Publication Date
JPS5923245U true JPS5923245U (en) 1984-02-13

Family

ID=30233255

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9819982U Pending JPS5923245U (en) 1982-07-01 1982-07-01 Surge voltage suppression circuit of smoothing circuit

Country Status (1)

Country Link
JP (1) JPS5923245U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54149850A (en) * 1978-05-17 1979-11-24 Fujitsu Fanuc Ltd Overvoltage preventing circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54149850A (en) * 1978-05-17 1979-11-24 Fujitsu Fanuc Ltd Overvoltage preventing circuit

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