JPS5367842A - Dc power source input circuit - Google Patents

Dc power source input circuit

Info

Publication number
JPS5367842A
JPS5367842A JP14215076A JP14215076A JPS5367842A JP S5367842 A JPS5367842 A JP S5367842A JP 14215076 A JP14215076 A JP 14215076A JP 14215076 A JP14215076 A JP 14215076A JP S5367842 A JPS5367842 A JP S5367842A
Authority
JP
Japan
Prior art keywords
power source
input circuit
source input
instruments
polarity
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
JP14215076A
Other languages
Japanese (ja)
Inventor
Toshihiko Tsuzuki
Kiyoshi Chiga
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 JP14215076A priority Critical patent/JPS5367842A/en
Publication of JPS5367842A publication Critical patent/JPS5367842A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: The circuit which operates the return system relay only when the DC power source is connected in reverse polarity, and reverses the polarity of the DC power source to be connected to instruments, and is so constituted that, even if the DC power source is connected reversely, instruments are not broken, and normal operations can be performed.
COPYRIGHT: (C)1978,JPO&Japio
JP14215076A 1976-11-29 1976-11-29 Dc power source input circuit Pending JPS5367842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14215076A JPS5367842A (en) 1976-11-29 1976-11-29 Dc power source input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14215076A JPS5367842A (en) 1976-11-29 1976-11-29 Dc power source input circuit

Publications (1)

Publication Number Publication Date
JPS5367842A true JPS5367842A (en) 1978-06-16

Family

ID=15308516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14215076A Pending JPS5367842A (en) 1976-11-29 1976-11-29 Dc power source input circuit

Country Status (1)

Country Link
JP (1) JPS5367842A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57121100U (en) * 1981-01-21 1982-07-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57121100U (en) * 1981-01-21 1982-07-27

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