JPS5696547A - Multiplex transmission circuit - Google Patents

Multiplex transmission circuit

Info

Publication number
JPS5696547A
JPS5696547A JP17124279A JP17124279A JPS5696547A JP S5696547 A JPS5696547 A JP S5696547A JP 17124279 A JP17124279 A JP 17124279A JP 17124279 A JP17124279 A JP 17124279A JP S5696547 A JPS5696547 A JP S5696547A
Authority
JP
Japan
Prior art keywords
circuit
logic
transmission
base
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
JP17124279A
Other languages
Japanese (ja)
Inventor
Eizo Yano
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 JP17124279A priority Critical patent/JPS5696547A/en
Publication of JPS5696547A publication Critical patent/JPS5696547A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
    • H02H7/205—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment for controlled semi-conductors which are not included in a specific circuit arrangement

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To protect the transmission circuit through the prevention of adverse effect on other circuits and components when logic elements cause latch-up, by providing an integrating circuit and a switching element at the output side of logic elements in multiplex transmission circuits. CONSTITUTION:The power supply from the transmission line is fed to a logic element 3 consisting of ICs via a rectifying circuit 1 and a smoothing circuit 2. At the output side of the logic element 3, the base of a transistor TR1 is connected via a resistor R3, the base of TR2 is connected to the emitter of TR1, the emitter and collector of TR2 are connected to the rectifying circuit 1 to form the protection circuit of multiplex transmission circuit. At the output side of the logic element 3 of this protection circuit, an integrating circuit 4 consisting of a resistor R1 and a capacitor C1, constant voltage element ZD and switching element are connected, and the element 5 is connected to the base of TR1. Further, the output of the integrating circuit 4 drives the element 5 to stop the transmission of current signal driving TR1, allowing to prevent the circuit from being damaged circuits and components due to latch-up logic element 3.
JP17124279A 1979-12-29 1979-12-29 Multiplex transmission circuit Pending JPS5696547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17124279A JPS5696547A (en) 1979-12-29 1979-12-29 Multiplex transmission circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17124279A JPS5696547A (en) 1979-12-29 1979-12-29 Multiplex transmission circuit

Publications (1)

Publication Number Publication Date
JPS5696547A true JPS5696547A (en) 1981-08-04

Family

ID=15919668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17124279A Pending JPS5696547A (en) 1979-12-29 1979-12-29 Multiplex transmission circuit

Country Status (1)

Country Link
JP (1) JPS5696547A (en)

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