JPS647728A - Instantaneous interruption preventing circuit - Google Patents

Instantaneous interruption preventing circuit

Info

Publication number
JPS647728A
JPS647728A JP62161262A JP16126287A JPS647728A JP S647728 A JPS647728 A JP S647728A JP 62161262 A JP62161262 A JP 62161262A JP 16126287 A JP16126287 A JP 16126287A JP S647728 A JPS647728 A JP S647728A
Authority
JP
Japan
Prior art keywords
circuit
power source
switch
voltage
action
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
JP62161262A
Other languages
Japanese (ja)
Inventor
Sotoaki Babano
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP62161262A priority Critical patent/JPS647728A/en
Publication of JPS647728A publication Critical patent/JPS647728A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To correctly actuate a timer function and to realize a highly accurate instantaneous interruption prevention by controlling a switch with the action of a supply voltage supervising circuit and compensating the action of a memory circuit with a back-up power source circuit. CONSTITUTION:When the impressed voltage of a terminal 7 is instantaneously interrupted or when a switch 1 is off for a short time, the output of a stabilizing power source circuit 2 is reduced, a supervising circuit 9 of the supply voltage is operated, and a switch 8 is turned on. Thus, a voltage is supplied from a back-up power source circuit 6 to a CPU 4 and a power source resetting circuit 3. At such time, for a memory circuit 5, a power source is supplied from the circuit 6, the action is compensated, memory information can be sent to the CPU 4 and a correct timer function is displayed. When the voltage reduction is continued for a long time, the switch 8 is turned off by a time constant circuit in the circuit 9.
JP62161262A 1987-06-30 1987-06-30 Instantaneous interruption preventing circuit Pending JPS647728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62161262A JPS647728A (en) 1987-06-30 1987-06-30 Instantaneous interruption preventing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62161262A JPS647728A (en) 1987-06-30 1987-06-30 Instantaneous interruption preventing circuit

Publications (1)

Publication Number Publication Date
JPS647728A true JPS647728A (en) 1989-01-11

Family

ID=15731755

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62161262A Pending JPS647728A (en) 1987-06-30 1987-06-30 Instantaneous interruption preventing circuit

Country Status (1)

Country Link
JP (1) JPS647728A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013145853A1 (en) * 2012-03-30 2013-10-03 日立オートモティブシステムズ株式会社 Electronic control apparatus
JP2021093833A (en) * 2019-12-10 2021-06-17 日立Astemo株式会社 Electronic control device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013145853A1 (en) * 2012-03-30 2013-10-03 日立オートモティブシステムズ株式会社 Electronic control apparatus
JP2013210855A (en) * 2012-03-30 2013-10-10 Hitachi Automotive Systems Ltd Electronic control unit
CN104094189A (en) * 2012-03-30 2014-10-08 日立汽车系统株式会社 Electronic control apparatus
CN104094189B (en) * 2012-03-30 2016-11-09 日立汽车系统株式会社 Electronic-controlled installation
US9600047B2 (en) 2012-03-30 2017-03-21 Hitachi Automotive Systems, Ltd. Electronic control unit
JP2021093833A (en) * 2019-12-10 2021-06-17 日立Astemo株式会社 Electronic control device

Similar Documents

Publication Publication Date Title
BR9808547A (en) Switching mode power supply with over current protection
MY123877A (en) Power interface circuit for a tdma transmitter
MY100993A (en) Power on-off control circuit.
JPS647728A (en) Instantaneous interruption preventing circuit
EP0415490A3 (en) Circuit arrangement for power supply to a load
EP0467719A3 (en) Integrated low voltage detect and watchdog circuit
MX9805006A (en) A reset circuit for ensuring proper reset when used with decaying power supplies.
JPS57147190A (en) Memory circuit
JPS6414838A (en) Relay drive circuit
JPS5713851A (en) Facsimile equipment
JPS57176401A (en) Malfunction preventing system for alarm circuit at input power supply application
JPS5734224A (en) Power control circuit
JPS5710820A (en) Constant voltage power supply device
JPS6480105A (en) Semiconductor integrated circuit
JPS5394733A (en) Feeding circuit to volatile memory unit
JPS5536718A (en) Level display unit
JPS5398050A (en) Power supply
JPS5746186A (en) Voltage control device of electronic watch
JPS57121721A (en) Electric power supply controlling circuit
JPS6415069A (en) Disasters preventing equipment
JPS6459519A (en) Reset circuit
JPS6458182A (en) Videotex terminal equipment
JPS5342627A (en) Power switch circuit
JPS6459514A (en) Method for monitoring battery voltage
JPS52126746A (en) Phase controlled system power control circuit