JPS51136219A - Signal receiving circuit for telephone switchboard - Google Patents

Signal receiving circuit for telephone switchboard

Info

Publication number
JPS51136219A
JPS51136219A JP5972575A JP5972575A JPS51136219A JP S51136219 A JPS51136219 A JP S51136219A JP 5972575 A JP5972575 A JP 5972575A JP 5972575 A JP5972575 A JP 5972575A JP S51136219 A JPS51136219 A JP S51136219A
Authority
JP
Japan
Prior art keywords
receiving circuit
signal receiving
telephone switchboard
relay
signal
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
JP5972575A
Other languages
Japanese (ja)
Inventor
Isao 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 JP5972575A priority Critical patent/JPS51136219A/en
Publication of JPS51136219A publication Critical patent/JPS51136219A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:Prevention of faulty receiving relay by constituting the ac signal receiving circuit of telephone switchboard so that the discharging current flowing through a capacitor be prohibited to be fed to ac signal receivifng relay.
JP5972575A 1975-05-21 1975-05-21 Signal receiving circuit for telephone switchboard Pending JPS51136219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5972575A JPS51136219A (en) 1975-05-21 1975-05-21 Signal receiving circuit for telephone switchboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5972575A JPS51136219A (en) 1975-05-21 1975-05-21 Signal receiving circuit for telephone switchboard

Publications (1)

Publication Number Publication Date
JPS51136219A true JPS51136219A (en) 1976-11-25

Family

ID=13121454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5972575A Pending JPS51136219A (en) 1975-05-21 1975-05-21 Signal receiving circuit for telephone switchboard

Country Status (1)

Country Link
JP (1) JPS51136219A (en)

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