JPS55100748A - Signal connection system - Google Patents

Signal connection system

Info

Publication number
JPS55100748A
JPS55100748A JP896479A JP896479A JPS55100748A JP S55100748 A JPS55100748 A JP S55100748A JP 896479 A JP896479 A JP 896479A JP 896479 A JP896479 A JP 896479A JP S55100748 A JPS55100748 A JP S55100748A
Authority
JP
Japan
Prior art keywords
voltage
noise
circuit
driver circuit
malfunctioning
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
JP896479A
Other languages
Japanese (ja)
Inventor
Akira Tamaki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP896479A priority Critical patent/JPS55100748A/en
Publication of JPS55100748A publication Critical patent/JPS55100748A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/003—Modifications for increasing the reliability for protection

Landscapes

  • Logic Circuits (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To make it possible to prevent a logic circuit having received a noise from malfunctioning by disconnecting a driver circuit from a signal circuit during a period when a noise is generated possibly. CONSTITUTION:Once the power supply of logic unit 1' is put to work, power voltage VS to driver circuit 4 and relay 13 rises gradually from initial voltage V0 to reated voltage VCC. Then, relay 13 stays open at contact 15 at a working voltage and below and a developed voltage is never applied to signal line 3. With voltage VS above the working voltage next, contact 15 is made, but since the working voltage is between normal operatable voltage VT and voltage VS and a leaking voltage disappears, so that no current will flow through signal line 3. Therefore, the simple constitution disconnects a driver circuit from a signal circuit during a period when a noise is possibly generated, so that the logic circuit receiving a noise can be prevented from malfunctioning.
JP896479A 1979-01-29 1979-01-29 Signal connection system Pending JPS55100748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP896479A JPS55100748A (en) 1979-01-29 1979-01-29 Signal connection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP896479A JPS55100748A (en) 1979-01-29 1979-01-29 Signal connection system

Publications (1)

Publication Number Publication Date
JPS55100748A true JPS55100748A (en) 1980-07-31

Family

ID=11707351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP896479A Pending JPS55100748A (en) 1979-01-29 1979-01-29 Signal connection system

Country Status (1)

Country Link
JP (1) JPS55100748A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588239U (en) * 1981-07-07 1983-01-19 三洋電機株式会社 output device
US4446499A (en) * 1981-06-05 1984-05-01 Fujitsu Ten Limited Input protection circuit
JPS6084014A (en) * 1983-10-14 1985-05-13 Sharp Corp I2l circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5087266A (en) * 1973-12-04 1975-07-14
JPS54945A (en) * 1977-06-06 1979-01-06 Nec Corp Integrated circuit providing output control function

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5087266A (en) * 1973-12-04 1975-07-14
JPS54945A (en) * 1977-06-06 1979-01-06 Nec Corp Integrated circuit providing output control function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4446499A (en) * 1981-06-05 1984-05-01 Fujitsu Ten Limited Input protection circuit
JPS588239U (en) * 1981-07-07 1983-01-19 三洋電機株式会社 output device
JPS6084014A (en) * 1983-10-14 1985-05-13 Sharp Corp I2l circuit

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