JPS5475054A - Power on-off control circuit - Google Patents

Power on-off control circuit

Info

Publication number
JPS5475054A
JPS5475054A JP14164977A JP14164977A JPS5475054A JP S5475054 A JPS5475054 A JP S5475054A JP 14164977 A JP14164977 A JP 14164977A JP 14164977 A JP14164977 A JP 14164977A JP S5475054 A JPS5475054 A JP S5475054A
Authority
JP
Japan
Prior art keywords
power
switch
self
manual switch
contact
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
JP14164977A
Other languages
Japanese (ja)
Other versions
JPS6030187B2 (en
Inventor
Naoki Furuhashi
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 JP52141649A priority Critical patent/JPS6030187B2/en
Publication of JPS5475054A publication Critical patent/JPS5475054A/en
Publication of JPS6030187B2 publication Critical patent/JPS6030187B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Supply And Distribution Of Alternating Current (AREA)

Abstract

PURPOSE: To ensure a safety of equipment, with a condition before power interruption maintainable even for an interruption of service, by applying a manual switch of self-resetting type in the power on-off control circuit, to store a state of on-off in memory to the above with self-holding relays used.
CONSTITUTION: A power, fed from a commercial power source 17 to a power unit 16, is on-off operated by a manual switch 15 and a remote power off signal generating switch 14. The manual switch in the power on-off control circit is normally making a contact in a direction as shown in the drawing, however, with a self-resetting type switch applied that makes a contact to an oppositely facing contact by manually pushing the switch and returns to the former state of position again by a release of hand from the switch. And with a combination use made for self-holding relays 1 to 4, reclosing, after disconnection of power by a remote power off signal, will be operated only by pushing the manual switch 15.
COPYRIGHT: (C)1979,JPO&Japio
JP52141649A 1977-11-28 1977-11-28 Power on/off control circuit Expired JPS6030187B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52141649A JPS6030187B2 (en) 1977-11-28 1977-11-28 Power on/off control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52141649A JPS6030187B2 (en) 1977-11-28 1977-11-28 Power on/off control circuit

Publications (2)

Publication Number Publication Date
JPS5475054A true JPS5475054A (en) 1979-06-15
JPS6030187B2 JPS6030187B2 (en) 1985-07-15

Family

ID=15296948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52141649A Expired JPS6030187B2 (en) 1977-11-28 1977-11-28 Power on/off control circuit

Country Status (1)

Country Link
JP (1) JPS6030187B2 (en)

Also Published As

Publication number Publication date
JPS6030187B2 (en) 1985-07-15

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