JPS5647190A - Electric power supply system - Google Patents

Electric power supply system

Info

Publication number
JPS5647190A
JPS5647190A JP12364879A JP12364879A JPS5647190A JP S5647190 A JPS5647190 A JP S5647190A JP 12364879 A JP12364879 A JP 12364879A JP 12364879 A JP12364879 A JP 12364879A JP S5647190 A JPS5647190 A JP S5647190A
Authority
JP
Japan
Prior art keywords
electric power
power supply
voltage
switching contact
output device
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
JP12364879A
Other languages
Japanese (ja)
Inventor
Kiyoshi Kitagawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP12364879A priority Critical patent/JPS5647190A/en
Publication of JPS5647190A publication Critical patent/JPS5647190A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems

Abstract

PURPOSE:To make it possible to obtain a stable electric power source by preventing the momentary break of electric power supply in the switching of an electric power supply circuit by providing a momentary-break preventing diode at a switching contact. CONSTITUTION:To switching contacts S0 and S1 of electric power supply circuits from central controller CC0 and CC1 to common input-output device 10, diodes D0 and D1 are connected in parallel respectively. Therefore, when central controller CC1 should be connected to input-output device 10, switching contact S0 of the electric power supply circuit is opend to close switching contact S1 transition time ts later and then voltage Vc is supplied from central controller CC1 via switching contact S1. At this time, voltage Vc is applied from both central controllers CC0 and CC1 via diodes D0 and D1 and voltage Vc minus forward voltage drop VF across diodes is set greater than permissible minimum voltage VCL of the input- output device, so that no momentary break will occur.
JP12364879A 1979-09-26 1979-09-26 Electric power supply system Pending JPS5647190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12364879A JPS5647190A (en) 1979-09-26 1979-09-26 Electric power supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12364879A JPS5647190A (en) 1979-09-26 1979-09-26 Electric power supply system

Publications (1)

Publication Number Publication Date
JPS5647190A true JPS5647190A (en) 1981-04-28

Family

ID=14865789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12364879A Pending JPS5647190A (en) 1979-09-26 1979-09-26 Electric power supply system

Country Status (1)

Country Link
JP (1) JPS5647190A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017131036A (en) * 2016-01-20 2017-07-27 新電元工業株式会社 Switch circuit and power system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017131036A (en) * 2016-01-20 2017-07-27 新電元工業株式会社 Switch circuit and power system

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