JPS52128015A - Back up power supply circuit of cmos circuit - Google Patents

Back up power supply circuit of cmos circuit

Info

Publication number
JPS52128015A
JPS52128015A JP4515276A JP4515276A JPS52128015A JP S52128015 A JPS52128015 A JP S52128015A JP 4515276 A JP4515276 A JP 4515276A JP 4515276 A JP4515276 A JP 4515276A JP S52128015 A JPS52128015 A JP S52128015A
Authority
JP
Japan
Prior art keywords
power supply
circuit
cmos
supply circuit
cmos circuit
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
JP4515276A
Other languages
Japanese (ja)
Other versions
JPS5623173B2 (en
Inventor
Tsutomu Sugita
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP4515276A priority Critical patent/JPS52128015A/en
Publication of JPS52128015A publication Critical patent/JPS52128015A/en
Publication of JPS5623173B2 publication Critical patent/JPS5623173B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Stand-By Power Supply Arrangements (AREA)
  • Power Sources (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE: To prevent CMOS circuit from erroneous functioning caused by external noise by shutting off the power supply to the power supply circuit of CMOS element from D/C power supply unit before the power supply voltage drops to the limited operating voltage.
COPYRIGHT: (C)1977,JPO&Japio
JP4515276A 1976-04-20 1976-04-20 Back up power supply circuit of cmos circuit Granted JPS52128015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4515276A JPS52128015A (en) 1976-04-20 1976-04-20 Back up power supply circuit of cmos circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4515276A JPS52128015A (en) 1976-04-20 1976-04-20 Back up power supply circuit of cmos circuit

Publications (2)

Publication Number Publication Date
JPS52128015A true JPS52128015A (en) 1977-10-27
JPS5623173B2 JPS5623173B2 (en) 1981-05-29

Family

ID=12711290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4515276A Granted JPS52128015A (en) 1976-04-20 1976-04-20 Back up power supply circuit of cmos circuit

Country Status (1)

Country Link
JP (1) JPS52128015A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS553445U (en) * 1978-06-23 1980-01-10
EP0012232A1 (en) * 1978-11-29 1980-06-25 Nippondenso Co., Ltd. Apparatus for switching over the operating frequency of a digital computer
JPS5592531A (en) * 1978-12-29 1980-07-14 Philips Nv Device for protecting at dc power voltage drop time

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940030A (en) * 1972-08-17 1974-04-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940030A (en) * 1972-08-17 1974-04-15

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS553445U (en) * 1978-06-23 1980-01-10
EP0012232A1 (en) * 1978-11-29 1980-06-25 Nippondenso Co., Ltd. Apparatus for switching over the operating frequency of a digital computer
JPS5592531A (en) * 1978-12-29 1980-07-14 Philips Nv Device for protecting at dc power voltage drop time

Also Published As

Publication number Publication date
JPS5623173B2 (en) 1981-05-29

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