JPS5583393A - Electronic trunk - Google Patents

Electronic trunk

Info

Publication number
JPS5583393A
JPS5583393A JP16081078A JP16081078A JPS5583393A JP S5583393 A JPS5583393 A JP S5583393A JP 16081078 A JP16081078 A JP 16081078A JP 16081078 A JP16081078 A JP 16081078A JP S5583393 A JPS5583393 A JP S5583393A
Authority
JP
Japan
Prior art keywords
channel
calling
constitution
scrs
called
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
JP16081078A
Other languages
Japanese (ja)
Inventor
Eiji Akiyoshi
Hideo Osawa
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.)
Japan Radio Co Ltd
Original Assignee
Japan Radio Co 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 Japan Radio Co Ltd filed Critical Japan Radio Co Ltd
Priority to JP16081078A priority Critical patent/JPS5583393A/en
Publication of JPS5583393A publication Critical patent/JPS5583393A/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
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages

Landscapes

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

Abstract

PURPOSE:To simplify the constitution of a circuit by eliminating the need for a prevention circuit of a calling-side channel by composing an electronic exchange of semiconductor devices for miniaturization and high performance and then by providing a constant-current circuit which allows an overcurrent flowing through the coupling capacitor of the channel to flow forward through the channel. CONSTITUTION:For a call between calling-side subscriber 4 and called-side subscriber 5, calling-side semiconductor channel 1 is coupled with called-side semiconductor channel 2 via electronic trunk 3. Channels 1 and 2 of this constitution are provided gate control type SCRs 6-9 and trunk 3 is further provided with calling- side and called-side channel switch holding constant current circuits 10-13 connected to power supplies 14 and 15, and coupling capacitors 16 and 17. Then, overcurrents generated through capacitors 16 and 17 when channel 1 is closed and channel 2 is also closed next are allowed by circuits 10-13 to flow forward through SCRs 6-9, thereby protecting SCRs 6-9.
JP16081078A 1978-12-19 1978-12-19 Electronic trunk Pending JPS5583393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16081078A JPS5583393A (en) 1978-12-19 1978-12-19 Electronic trunk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16081078A JPS5583393A (en) 1978-12-19 1978-12-19 Electronic trunk

Publications (1)

Publication Number Publication Date
JPS5583393A true JPS5583393A (en) 1980-06-23

Family

ID=15722909

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16081078A Pending JPS5583393A (en) 1978-12-19 1978-12-19 Electronic trunk

Country Status (1)

Country Link
JP (1) JPS5583393A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11331963B2 (en) 2017-10-02 2022-05-17 The Yokohama Rubber Co., Ltd. Run-flat tire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11331963B2 (en) 2017-10-02 2022-05-17 The Yokohama Rubber Co., Ltd. Run-flat tire

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