JPH01131289U - - Google Patents

Info

Publication number
JPH01131289U
JPH01131289U JP2753988U JP2753988U JPH01131289U JP H01131289 U JPH01131289 U JP H01131289U JP 2753988 U JP2753988 U JP 2753988U JP 2753988 U JP2753988 U JP 2753988U JP H01131289 U JPH01131289 U JP H01131289U
Authority
JP
Japan
Prior art keywords
circuit
error amplifier
input voltage
amplifier output
flyback converter
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
JP2753988U
Other languages
Japanese (ja)
Other versions
JPH0727833Y2 (en
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 filed Critical
Priority to JP1988027539U priority Critical patent/JPH0727833Y2/en
Publication of JPH01131289U publication Critical patent/JPH01131289U/ja
Application granted granted Critical
Publication of JPH0727833Y2 publication Critical patent/JPH0727833Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Dc-Dc Converters (AREA)

Description

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

図は本考案の一実施例を示す回路図である。 ２……主スイツチングトランジスタ、４……主
トランス、１７……コンデンサ、２２……誤差増
幅器、２６……ツエナーダイオード、２７……ト
ランジスタ、２８，２９……抵抗、３０……比較
器、３１〜３３……抵抗、３４……低入力電圧保
護回路。 The figure is a circuit diagram showing an embodiment of the present invention. 2... Main switching transistor, 4... Main transformer, 17... Capacitor, 22... Error amplifier, 26... Zener diode, 27... Transistor, 28, 29... Resistor, 30... Comparator, 31 ~33...Resistor, 34...Low input voltage protection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ２次側制御フライバツク・コンバータにおいて
、基準電圧と主トランスの２次側補助巻線に誘起
される電圧との比較回路と、入力電圧が規定外に
低下したとき前記比較回路の信号を受けコンバー
タ出力を垂下させる制御用誤差増幅器出力短絡回
路とを有し、主スイツチングトランジスタの電流
増大による短絡破壊を防止し得るようにしたこと
を特徴とする２次側制御フライバツク・コンバー
タの低入力電圧保護回路。 A secondary-side control flyback converter includes a comparison circuit between a reference voltage and a voltage induced in the secondary-side auxiliary winding of the main transformer, and a converter output signal that receives a signal from the comparison circuit when the input voltage drops beyond the specified range. A low input voltage protection circuit for a secondary-side control flyback converter, characterized in that it has a control error amplifier output short-circuit circuit that causes the control error amplifier output to droop, and is capable of preventing short-circuit destruction due to an increase in current of the main switching transistor. .
JP1988027539U 1988-03-03 1988-03-03 Low input voltage protection circuit for secondary side control flyback converter Expired - Lifetime JPH0727833Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988027539U JPH0727833Y2 (en) 1988-03-03 1988-03-03 Low input voltage protection circuit for secondary side control flyback converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988027539U JPH0727833Y2 (en) 1988-03-03 1988-03-03 Low input voltage protection circuit for secondary side control flyback converter

Publications (2)

Publication Number Publication Date
JPH01131289U true JPH01131289U (en) 1989-09-06
JPH0727833Y2 JPH0727833Y2 (en) 1995-06-21

Family

ID=31250112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988027539U Expired - Lifetime JPH0727833Y2 (en) 1988-03-03 1988-03-03 Low input voltage protection circuit for secondary side control flyback converter

Country Status (1)

Country Link
JP (1) JPH0727833Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108599602A (en) * 2018-07-10 2018-09-28 宋庆国 A kind of distributed power supply system and control method based on magnetic switch control

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532644U (en) * 1978-08-22 1980-03-03
JPS5532428A (en) * 1978-08-25 1980-03-07 Toko Inc Switching regulator
JPS56100093U (en) * 1979-12-27 1981-08-06
JPS5731087U (en) * 1980-07-26 1982-02-18
JPS6093443U (en) * 1983-11-30 1985-06-26 富士電機株式会社 Power outage detection circuit
JPS60114530U (en) * 1984-01-05 1985-08-02 富士電気化学株式会社 Power supply with permissible input voltage range
JPS60176417A (en) * 1984-02-22 1985-09-10 松下電器産業株式会社 Power interruption detector
JPS62178787U (en) * 1986-04-28 1987-11-13
JPS6399767A (en) * 1986-10-13 1988-05-02 Fujitsu Denso Ltd Fly-back converter

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532644U (en) * 1978-08-22 1980-03-03
JPS5532428A (en) * 1978-08-25 1980-03-07 Toko Inc Switching regulator
JPS56100093U (en) * 1979-12-27 1981-08-06
JPS5731087U (en) * 1980-07-26 1982-02-18
JPS6093443U (en) * 1983-11-30 1985-06-26 富士電機株式会社 Power outage detection circuit
JPS60114530U (en) * 1984-01-05 1985-08-02 富士電気化学株式会社 Power supply with permissible input voltage range
JPS60176417A (en) * 1984-02-22 1985-09-10 松下電器産業株式会社 Power interruption detector
JPS62178787U (en) * 1986-04-28 1987-11-13
JPS6399767A (en) * 1986-10-13 1988-05-02 Fujitsu Denso Ltd Fly-back converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108599602A (en) * 2018-07-10 2018-09-28 宋庆国 A kind of distributed power supply system and control method based on magnetic switch control

Also Published As

Publication number Publication date
JPH0727833Y2 (en) 1995-06-21

Similar Documents

Publication Publication Date Title
JPH01131289U (en)
JPS6270688U (en)
JPH01159546U (en)
JPS62202023U (en)
JPS6274494U (en)
JPH0480286U (en)
JPH0394086U (en)
JPH0334683U (en)
JPS63109588U (en)
JPH03117378U (en)
JPH03101180U (en)
JPS6351586U (en)
JPS6185962U (en)
JPS6384578U (en)
JPH01116586U (en)
JPS63179778U (en)
JPS61104787U (en)
JPS6278086U (en)
JPS6248127U (en)
JPS6246917U (en)
JPH01166437U (en)
JPS5986888U (en) Power supply circuit error detection device
JPH02103787U (en)
JPH0454488U (en)
JPH0488334U (en)