JPS5638618A - Electronic circuit device having memory circuit and power supply device used for it - Google Patents

Electronic circuit device having memory circuit and power supply device used for it

Info

Publication number
JPS5638618A
JPS5638618A JP11288779A JP11288779A JPS5638618A JP S5638618 A JPS5638618 A JP S5638618A JP 11288779 A JP11288779 A JP 11288779A JP 11288779 A JP11288779 A JP 11288779A JP S5638618 A JPS5638618 A JP S5638618A
Authority
JP
Japan
Prior art keywords
power supply
circuit
voltage
detection
gate 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.)
Pending
Application number
JP11288779A
Other languages
Japanese (ja)
Inventor
Tetsuo Sato
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11288779A priority Critical patent/JPS5638618A/en
Publication of JPS5638618A publication Critical patent/JPS5638618A/en
Pending legal-status Critical Current

Links

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)
  • Power Sources (AREA)

Abstract

PURPOSE: To reduce the burden of backup power supply provided for the disconnection of power supply, by detecting the lowering of power supply voltage and by making inoperative the unit through the switching means.
CONSTITUTION: The power supply E1 supplying the operation voltage to the unit supplies the power to the input control circiut 4 being the load, gate circuit 5 and memory circuit 6 via the backup power supply circuit 3. When the power supply voltage E1 is high, in the detection circuit 1 having the relay Re operated through the detection of the voltage, the relay contact SW2 is connected to position (a), and Vcc is given to the detection terminal P2 of the gate circuit 5 and the gate circiut 5 performs normal operation. When the power supply voltage is lower, the contact SW2 of the detection circuit 1 is selected to (b), the detection terminal P2 of the gate circuit 5 receives ground potential, the operation of the gate circuit 5 is inhibited to reduce the load of the backup power supply.
COPYRIGHT: (C)1981,JPO&Japio
JP11288779A 1979-09-05 1979-09-05 Electronic circuit device having memory circuit and power supply device used for it Pending JPS5638618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11288779A JPS5638618A (en) 1979-09-05 1979-09-05 Electronic circuit device having memory circuit and power supply device used for it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11288779A JPS5638618A (en) 1979-09-05 1979-09-05 Electronic circuit device having memory circuit and power supply device used for it

Publications (1)

Publication Number Publication Date
JPS5638618A true JPS5638618A (en) 1981-04-13

Family

ID=14597997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11288779A Pending JPS5638618A (en) 1979-09-05 1979-09-05 Electronic circuit device having memory circuit and power supply device used for it

Country Status (1)

Country Link
JP (1) JPS5638618A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5915132U (en) * 1982-07-19 1984-01-30 三洋電機株式会社 Discharge prevention device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5149628A (en) * 1974-10-28 1976-04-30 Hitachi Ltd
JPS5192132A (en) * 1975-02-10 1976-08-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5149628A (en) * 1974-10-28 1976-04-30 Hitachi Ltd
JPS5192132A (en) * 1975-02-10 1976-08-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5915132U (en) * 1982-07-19 1984-01-30 三洋電機株式会社 Discharge prevention device

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