JPS51148315A - Relay selection drive circuit - Google Patents

Relay selection drive circuit

Info

Publication number
JPS51148315A
JPS51148315A JP7193475A JP7193475A JPS51148315A JP S51148315 A JPS51148315 A JP S51148315A JP 7193475 A JP7193475 A JP 7193475A JP 7193475 A JP7193475 A JP 7193475A JP S51148315 A JPS51148315 A JP S51148315A
Authority
JP
Japan
Prior art keywords
drive circuit
relay selection
selection drive
relay
circuits
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
JP7193475A
Other languages
Japanese (ja)
Inventor
Toshihiko Umeda
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 JP7193475A priority Critical patent/JPS51148315A/en
Publication of JPS51148315A publication Critical patent/JPS51148315A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:When the common control equipment controls a number of trunk circuits, one relay is selectively driven so as to send control signals to these circuits only.
JP7193475A 1975-06-16 1975-06-16 Relay selection drive circuit Pending JPS51148315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7193475A JPS51148315A (en) 1975-06-16 1975-06-16 Relay selection drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7193475A JPS51148315A (en) 1975-06-16 1975-06-16 Relay selection drive circuit

Publications (1)

Publication Number Publication Date
JPS51148315A true JPS51148315A (en) 1976-12-20

Family

ID=13474829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7193475A Pending JPS51148315A (en) 1975-06-16 1975-06-16 Relay selection drive circuit

Country Status (1)

Country Link
JP (1) JPS51148315A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54142919A (en) * 1978-04-27 1979-11-07 Nec Corp Switch module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54142919A (en) * 1978-04-27 1979-11-07 Nec Corp Switch module

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