KR970031139A - Power supply circuit - Google Patents

Power supply circuit Download PDF

Info

Publication number
KR970031139A
KR970031139A KR1019950046628A KR19950046628A KR970031139A KR 970031139 A KR970031139 A KR 970031139A KR 1019950046628 A KR1019950046628 A KR 1019950046628A KR 19950046628 A KR19950046628 A KR 19950046628A KR 970031139 A KR970031139 A KR 970031139A
Authority
KR
South Korea
Prior art keywords
output
power supply
output voltage
detector
overvoltage
Prior art date
Application number
KR1019950046628A
Other languages
Korean (ko)
Inventor
양귀견
Original Assignee
이형도
삼성전기 주식회사
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 이형도, 삼성전기 주식회사 filed Critical 이형도
Priority to KR1019950046628A priority Critical patent/KR970031139A/en
Publication of KR970031139A publication Critical patent/KR970031139A/en

Links

Landscapes

  • Dc-Dc Converters (AREA)

Abstract

이 발명은 PWM 회로를 구비한 전원공급회로에 관한 것으로서, 전원공급 입력단에 과전압 검출회로를 구비시켜, 과전압이 발생되면 이를 감지하여 실리콘 정류 과전압 발생 동안에는 PWM 회로의 동작을 중지시켜 과전압을 제거하는 것을 특징으로 한다.The present invention relates to a power supply circuit having a PWM circuit, comprising an overvoltage detection circuit at a power supply input terminal, detecting an overvoltage when the overvoltage occurs, and stopping the operation of the PWM circuit during the silicon rectification overvoltage generation to remove the overvoltage. It features.

Description

전원공급회로Power supply circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1 도는 종래 기술을 나타낸 전원공급 회로도.1 is a power supply circuit diagram showing the prior art.

제 2 도는 이 발명을 나타낸 전원공급 회로도이다.2 is a power supply circuit diagram showing this invention.

Claims (2)

PWM회로를 구비한 전원공급회로에 있어서, 입력전류를 설정한 레벨값 이하로 제한하여 출력하며 또한, 설정된 레벨값 이상의 과전류이면 이를 별도로 출력하는 과전류 검출부, 상기 과전류 검출부에서 제한 출력되는 출력전압을 상기 PWM 회로에서 입력되는 펄스폭 변조신호에 상응토록 가변하여 출력하기 위한 전원제어부, 상기 전원제어부의 출력전압의 레벨을 검출하여 상기 PWM회로에 궤환시키는 출력전압 검출부, 상기 과전류 검출부와 상기 출력전압 검출부의 출력측에 연결되어 상기 과전류 검출부에서 과전류가 입력될때마다 상기 출력전압 검출부의 출력측을 소멸시키는 과전압 제어부로 구성된 것을 특징으로 하는 전원공급회로.In the power supply circuit having a PWM circuit, the output current is limited to the output below the set level value, and if the over-current over the set level value, the over-current detection unit for outputting it separately, the output voltage limited output from the over-current detection unit A power supply controller for varying and outputting a pulse width modulation signal inputted from a PWM circuit, an output voltage detector for detecting a level of an output voltage of the power controller and feeding it back to the PWM circuit, the overcurrent detector and the output voltage detector And an overvoltage controller connected to an output side and extinguishing the output side of the output voltage detector whenever an overcurrent is input from the overcurrent detector. 제1항에 있어서, 상기 제1항의 과전압 제어부는 실리콘 정류소자를 구비되어 설정된 잉계전압 이상의 전압이 상기 과전류 검출부에서 상기 실리콘 정류소자의 게이트단에 인가되면 상기 실리콘 정류소자가 도통되어 상기 출력전압 검출부의 출력신호를 접지로 흐르게 하는 것을 특징으로 하는 전원공급회로.The output voltage detector of claim 1, wherein the overvoltage controller is provided with a silicon rectifier element and the silicon rectifier element is turned on when a voltage equal to or greater than an excitation voltage set by the overcurrent detector is applied to the gate terminal of the silicon rectifier element. Power supply circuit, characterized in that to flow to ground. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950046628A 1995-11-30 1995-11-30 Power supply circuit KR970031139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950046628A KR970031139A (en) 1995-11-30 1995-11-30 Power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950046628A KR970031139A (en) 1995-11-30 1995-11-30 Power supply circuit

Publications (1)

Publication Number Publication Date
KR970031139A true KR970031139A (en) 1997-06-26

Family

ID=66593639

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950046628A KR970031139A (en) 1995-11-30 1995-11-30 Power supply circuit

Country Status (1)

Country Link
KR (1) KR970031139A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100331334B1 (en) * 1998-12-17 2002-05-09 윤종용 Cathode Ray Tube Protector
KR100605120B1 (en) * 2004-07-20 2006-07-28 유양산전 주식회사 Apparatus for power supply control of an exposure type LED lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100331334B1 (en) * 1998-12-17 2002-05-09 윤종용 Cathode Ray Tube Protector
KR100605120B1 (en) * 2004-07-20 2006-07-28 유양산전 주식회사 Apparatus for power supply control of an exposure type LED lamp

Similar Documents

Publication Publication Date Title
KR970055034A (en) Power factor correction circuit
KR970031203A (en) Switching Power Supply
KR940015427A (en) Refrigeration Cycle Control
KR970055020A (en) Overcurrent Protection Circuit of Power Semiconductor Transistor
KR910015908A (en) Overvoltage and Overheating Power Supply Circuit
KR870008430A (en) Protection device of current converter
KR970031139A (en) Power supply circuit
JPH0785648B2 (en) Switching regulator power supply circuit
KR940005929Y1 (en) Power regulator circuit
KR910002085A (en) Switching Mode Power Supply Protection Circuit Using Shutdown Method
KR930011388A (en) SMPS Current Loss Prevention Device
KR900005018Y1 (en) Over current over voltage protective circuit
KR19990052422A (en) Switching Mode Power Supply
KR920009037A (en) Switching power supply system using self oscillation circuit
KR200321222Y1 (en) A device for preventing overcurrent
KR970063883A (en) inverter
KR900009626Y1 (en) Power circuit
KR930001680Y1 (en) Power circuit
KR950002220A (en) Switching element protection circuit of switching power supply
JPH0474929B2 (en)
KR970024476A (en) Overshoot prevention circuit of output voltage
KR930009480A (en) Protection circuit of electronic neon transformer
KR20040096362A (en) A device for preventing overcurrent
JPH0612136A (en) Direct current power source
KR970063858A (en) Logic circuit protection device

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination