JPS54103625A - Private line multiple transmission device - Google Patents

Private line multiple transmission device

Info

Publication number
JPS54103625A
JPS54103625A JP1085378A JP1085378A JPS54103625A JP S54103625 A JPS54103625 A JP S54103625A JP 1085378 A JP1085378 A JP 1085378A JP 1085378 A JP1085378 A JP 1085378A JP S54103625 A JPS54103625 A JP S54103625A
Authority
JP
Japan
Prior art keywords
circuit
short
time
thyristor
input terminal
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.)
Granted
Application number
JP1085378A
Other languages
Japanese (ja)
Other versions
JPS5833736B2 (en
Inventor
Keiichi Mizuguchi
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP1085378A priority Critical patent/JPS5833736B2/en
Publication of JPS54103625A publication Critical patent/JPS54103625A/en
Publication of JPS5833736B2 publication Critical patent/JPS5833736B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To ensure an assured protection of the driver circuit by switching on the thyristor to break the driving circuit after the time which is determined by the threshold level of the thyristor in the protecting circuit and the time constant of the friangular wave generated at the triangular wave generator circuit. CONSTITUTION:When the short-circuit occurs at the terminal unit, the positive input terminal of short-circuit detector circuit 19 turns to the H-level in steps. And the negative input terminal features a lower level of potential than the positive input terminal via reference voltage generator 16 and reference voltage memory circuit 17. Then the output of circuit 19 is supplied to triangular wave generator circuit 21. And thyristor Th is switched on after the time which is determined by the time constant of the triangular wave generated at circuit 21 and the threshold level L2 of Th in protecting circuit 18. Thus, the operation of driving circuit 5 is broken to reset circuit 19. In this way, the short-circuit detection is performed with only the relative level difference. Thus, nearly a constant short-circuit detection time is secured at all times, protecting the driving circuit in an assured and proper way.
JP1085378A 1978-01-31 1978-01-31 Dedicated line multiplex transmission equipment Expired JPS5833736B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1085378A JPS5833736B2 (en) 1978-01-31 1978-01-31 Dedicated line multiplex transmission equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1085378A JPS5833736B2 (en) 1978-01-31 1978-01-31 Dedicated line multiplex transmission equipment

Publications (2)

Publication Number Publication Date
JPS54103625A true JPS54103625A (en) 1979-08-15
JPS5833736B2 JPS5833736B2 (en) 1983-07-21

Family

ID=11761903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1085378A Expired JPS5833736B2 (en) 1978-01-31 1978-01-31 Dedicated line multiplex transmission equipment

Country Status (1)

Country Link
JP (1) JPS5833736B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6075721A (en) * 1983-09-30 1985-04-30 Hino Motors Ltd Control device for internal-combustion engine with supercharger
JPS60192228U (en) * 1984-05-30 1985-12-20 日野自動車株式会社 turbocharged engine

Also Published As

Publication number Publication date
JPS5833736B2 (en) 1983-07-21

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