JPH03103044A - Fault detecting system for diode in duplex power supply - Google Patents

Fault detecting system for diode in duplex power supply

Info

Publication number
JPH03103044A
JPH03103044A JP1239407A JP23940789A JPH03103044A JP H03103044 A JPH03103044 A JP H03103044A JP 1239407 A JP1239407 A JP 1239407A JP 23940789 A JP23940789 A JP 23940789A JP H03103044 A JPH03103044 A JP H03103044A
Authority
JP
Japan
Prior art keywords
diode
power supply
potential difference
detected
detecting system
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
JP1239407A
Other languages
Japanese (ja)
Inventor
Shuji Mototani
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP1239407A priority Critical patent/JPH03103044A/en
Publication of JPH03103044A publication Critical patent/JPH03103044A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable detection of fault in a diode, with a power supply being operated, by detecting potential difference across the diode and judging whether the output terminal voltage fluctuates and whether each potential difference is detected in accordance with the fluctuating output voltage from the power supply.
CONSTITUTION: When both diodes 201, 211 operate normally, potential difference across the diode is detected by the potential difference detecting circuit for one power supply which is feeding power to a load. When short circuit fault occurs in one diode, potential difference is not detected because the power supply therefor is at the side of power supply. When open fault occurs in one diode, potential difference across each diode is detected by the potential difference detecting circuit 206, 216 in the power supply 200, 210.
COPYRIGHT: (C)1991,JPO&Japio
JP1239407A 1989-09-14 1989-09-14 Fault detecting system for diode in duplex power supply Pending JPH03103044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1239407A JPH03103044A (en) 1989-09-14 1989-09-14 Fault detecting system for diode in duplex power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1239407A JPH03103044A (en) 1989-09-14 1989-09-14 Fault detecting system for diode in duplex power supply

Publications (1)

Publication Number Publication Date
JPH03103044A true JPH03103044A (en) 1991-04-30

Family

ID=17044316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1239407A Pending JPH03103044A (en) 1989-09-14 1989-09-14 Fault detecting system for diode in duplex power supply

Country Status (1)

Country Link
JP (1) JPH03103044A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009189126A (en) * 2008-02-05 2009-08-20 Nec Corp Power supply system and element failure detection method
JP2010107341A (en) * 2008-10-30 2010-05-13 Hitachi Automotive Systems Ltd Power supply circuit
JP2013180661A (en) * 2012-03-01 2013-09-12 Toyota Motor Corp Electronic control unit and abnormality detection method
JP2018096730A (en) * 2016-12-09 2018-06-21 日立オートモティブシステムズ株式会社 Diagnostic circuit
WO2020067098A1 (en) * 2018-09-28 2020-04-02 株式会社アドヴィックス Control device
JP2020150639A (en) * 2019-03-12 2020-09-17 富士電機株式会社 Power supply system
WO2023001823A1 (en) * 2021-07-23 2023-01-26 Robert Bosch Gmbh Power supply protection device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009189126A (en) * 2008-02-05 2009-08-20 Nec Corp Power supply system and element failure detection method
JP2010107341A (en) * 2008-10-30 2010-05-13 Hitachi Automotive Systems Ltd Power supply circuit
JP2013180661A (en) * 2012-03-01 2013-09-12 Toyota Motor Corp Electronic control unit and abnormality detection method
JP2018096730A (en) * 2016-12-09 2018-06-21 日立オートモティブシステムズ株式会社 Diagnostic circuit
WO2020067098A1 (en) * 2018-09-28 2020-04-02 株式会社アドヴィックス Control device
JP2020150639A (en) * 2019-03-12 2020-09-17 富士電機株式会社 Power supply system
WO2023001823A1 (en) * 2021-07-23 2023-01-26 Robert Bosch Gmbh Power supply protection device

Similar Documents

Publication Publication Date Title
JPH03103044A (en) Fault detecting system for diode in duplex power supply
JPH0487556A (en) Inverter
JPS6165319A (en) Trouble detection system of multiple power unit
JPH01269114A (en) Resetting circuit
JPH01190130A (en) Booster power supply circuit
JPH0398107A (en) Voltage stabilizing circuit with overcurrent protection function
JPH03262981A (en) Wire breaking detection system
JPH03195320A (en) Power feed unit
JPH04251520A (en) Switching regulator
JPH02176671A (en) Picture forming device
JPS62102314A (en) Protecting device for microcomputer operation in case of momentary power failure
JPH01238438A (en) Uninterruptible power supply device
JPH02136024A (en) Service interruption detection circuit
JPH037064A (en) Overvoltage follow-up preventive circuit for dual power source
JPH02303334A (en) Ac power source device
JPH02123930A (en) Power supply device
JPH0223045A (en) Power supply circuit
JPH03173326A (en) Power supply backup circuit
JPH0260413A (en) Protective relay
JPH03269265A (en) Power limitation detecting circuit
JPS63290125A (en) Uninterruptible power source
JPH01227623A (en) Fault detecting circuit
JPS63212254A (en) Feeder circuit
JPH04319376A (en) Signal detection circuit
JPH0412630A (en) Device for detecting abnormality of converter