JPS56138331A - Switch circuit with latch - Google Patents

Switch circuit with latch

Info

Publication number
JPS56138331A
JPS56138331A JP4263680A JP4263680A JPS56138331A JP S56138331 A JPS56138331 A JP S56138331A JP 4263680 A JP4263680 A JP 4263680A JP 4263680 A JP4263680 A JP 4263680A JP S56138331 A JPS56138331 A JP S56138331A
Authority
JP
Japan
Prior art keywords
switch
capacitor
switching
resistance
chattering
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
JP4263680A
Other languages
Japanese (ja)
Inventor
Satoshi Tanaka
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.)
NIPPON HAMONDO KK
Original Assignee
NIPPON HAMONDO KK
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 NIPPON HAMONDO KK filed Critical NIPPON HAMONDO KK
Priority to JP4263680A priority Critical patent/JPS56138331A/en
Publication of JPS56138331A publication Critical patent/JPS56138331A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/125—Discriminating pulses
    • H03K5/1252—Suppression or limitation of noise or interference
    • H03K5/1254—Suppression or limitation of noise or interference specially adapted for pulses generated by closure of switches, i.e. anti-bouncing devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/16—Modifications for eliminating interference voltages or currents

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To obtain stable logical output due to switching of a switch, by preventing chattering with a simple circuit constitution, through the provision of the two logic inverters in cascade connection and switch circuit and grounded capacitor. CONSTITUTION:Logic inverters N1, N2 are in cascade connection, and one end of the single pole switch S is connected to the input terminal A of one inverter N1, and the output terminal B of the inverter N2 is connected to the input terminal A via the resistance R1. Further, another end of the switch S is connected to the capacitor C1 charged at the application of power supply, and this capacitor C1 is connected to the output terminal via the resistance R2 and to the connecting point C between the inverters N1 and N2, to constitute the switch circuit with latch. The chattering generated at switching of the switch S is absorbed in the capacitor C, and the potential across the switch S is made to the same potential at the same time when the switch S is closed by the positive feedback due to the resistance R2 to prevent chattering and to obtain the logical output due to the switching of the switch S.
JP4263680A 1980-03-31 1980-03-31 Switch circuit with latch Pending JPS56138331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4263680A JPS56138331A (en) 1980-03-31 1980-03-31 Switch circuit with latch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4263680A JPS56138331A (en) 1980-03-31 1980-03-31 Switch circuit with latch

Publications (1)

Publication Number Publication Date
JPS56138331A true JPS56138331A (en) 1981-10-28

Family

ID=12641492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4263680A Pending JPS56138331A (en) 1980-03-31 1980-03-31 Switch circuit with latch

Country Status (1)

Country Link
JP (1) JPS56138331A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168181A (en) * 1990-05-25 1992-12-01 Sgs-Thomson Microelectronics S.R.L. Spike filtering circuit for logic signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168181A (en) * 1990-05-25 1992-12-01 Sgs-Thomson Microelectronics S.R.L. Spike filtering circuit for logic signals

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