JPS5537640A - Overvoltage preventive circuit of multi-power supply - Google Patents

Overvoltage preventive circuit of multi-power supply

Info

Publication number
JPS5537640A
JPS5537640A JP11025278A JP11025278A JPS5537640A JP S5537640 A JPS5537640 A JP S5537640A JP 11025278 A JP11025278 A JP 11025278A JP 11025278 A JP11025278 A JP 11025278A JP S5537640 A JPS5537640 A JP S5537640A
Authority
JP
Japan
Prior art keywords
voltage
circuit
overvoltage
scrs
terminals
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
JP11025278A
Other languages
Japanese (ja)
Other versions
JPS6052444B2 (en
Inventor
Kazuo Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Usac Electronic Ind Co Ltd
Original Assignee
Usac Electronic Ind Co Ltd
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 Usac Electronic Ind Co Ltd filed Critical Usac Electronic Ind Co Ltd
Priority to JP11025278A priority Critical patent/JPS6052444B2/en
Publication of JPS5537640A publication Critical patent/JPS5537640A/en
Publication of JPS6052444B2 publication Critical patent/JPS6052444B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE: To obtain a simple overvoltage preventive circuit with a small number of components by forming a short circuit of a protective diode for transmitting voltage clamping and SCR with its anode and cathode connected to positive and negatie maximum-voltage terminals respectively.
CONSTITUTION: A multi-power circuit which develops positive voltage E1 between terminals 1 and 2 and negative voltage -E2 between terminals 1a and 2 is provided with overvoltage detection circuits (a) and (b), SCR driver circuits A and B, and clamping diodes D1 and D2 of the opposite polarity to SCRS1 and an output voltage. The anode and cathode of SCRS1 are connected to a maximum voltage terminal of a positive voltage and a minimum voltage terminal of a negative-output absolute value respectively and its gate is also connected to output terminals of circuits A and B and OR. The moment a 1a-2 voltage of more than a fixed value is developed, circuit (a) or (b) detect the overvoltage, circuit A or B supplies a trigger signal to the gate of SCRS1 to make SCRS1 conduct and the output terminals is shorted, thereby preventing the overvoltage against a load. This circuit requires only one SCR, so that the constitution will be simplified.
COPYRIGHT: (C)1980,JPO&Japio
JP11025278A 1978-09-07 1978-09-07 Multi-power supply overvoltage prevention circuit Expired JPS6052444B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11025278A JPS6052444B2 (en) 1978-09-07 1978-09-07 Multi-power supply overvoltage prevention circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11025278A JPS6052444B2 (en) 1978-09-07 1978-09-07 Multi-power supply overvoltage prevention circuit

Publications (2)

Publication Number Publication Date
JPS5537640A true JPS5537640A (en) 1980-03-15
JPS6052444B2 JPS6052444B2 (en) 1985-11-19

Family

ID=14530961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11025278A Expired JPS6052444B2 (en) 1978-09-07 1978-09-07 Multi-power supply overvoltage prevention circuit

Country Status (1)

Country Link
JP (1) JPS6052444B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602797A (en) * 1983-05-18 1985-01-09 知久　静子 Partial semi-transparentizing method of paper
JPS61108581A (en) * 1984-10-31 1986-05-27 Ricoh Co Ltd Thermal recording material suitable for intermediate
US5969922A (en) * 1994-04-14 1999-10-19 Sgs-Thomson Microelectronics S.A. Failure indicator for a protection component

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0533812Y2 (en) * 1985-11-27 1993-08-27
US10954097B2 (en) 2017-08-16 2021-03-23 Southwire Company, Llc Reel chock

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602797A (en) * 1983-05-18 1985-01-09 知久　静子 Partial semi-transparentizing method of paper
JPS61108581A (en) * 1984-10-31 1986-05-27 Ricoh Co Ltd Thermal recording material suitable for intermediate
US5969922A (en) * 1994-04-14 1999-10-19 Sgs-Thomson Microelectronics S.A. Failure indicator for a protection component

Also Published As

Publication number Publication date
JPS6052444B2 (en) 1985-11-19

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