JPS5797219A - Chattering preventing circuit - Google Patents

Chattering preventing circuit

Info

Publication number
JPS5797219A
JPS5797219A JP55173631A JP17363180A JPS5797219A JP S5797219 A JPS5797219 A JP S5797219A JP 55173631 A JP55173631 A JP 55173631A JP 17363180 A JP17363180 A JP 17363180A JP S5797219 A JPS5797219 A JP S5797219A
Authority
JP
Japan
Prior art keywords
gate
level
capacitor
switch
input
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
JP55173631A
Other languages
Japanese (ja)
Inventor
Koichi Nakayama
Eiji Numano
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.)
TOUKOU KK
Toko Inc
Original Assignee
TOUKOU KK
Toko Inc
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 TOUKOU KK, Toko Inc filed Critical TOUKOU KK
Priority to JP55173631A priority Critical patent/JPS5797219A/en
Publication of JPS5797219A publication Critical patent/JPS5797219A/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)
  • Relay Circuits (AREA)
  • Manipulation Of Pulses (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To simplify a circuit and to avoid the generation of noise, by constituting the circuit only with IIL gate circuits. CONSTITUTION:A current flows from a current source 11 of an I<2>L to the input terminal of the 1st I<2>L gate G1 and a capacitor C is charged. When a switch S turned on, the capacitor C is discharged and the input of the gate G1 is at L level. Thus, the output of the I<2>L gate G2 is also at L level, and the output of I<2>L gates G3 and G4 is at L level. With this state, a flip-flop consisting of the gates G3, G4 is set. The chattering when the switch S turns on can be prevented, since the capacitor C maintains the input level of the gate G1. When the switch S turns off, since the input level of the gate G1 is maintained until the capacitor C is charged, the chattering can be prevented.
JP55173631A 1980-12-09 1980-12-09 Chattering preventing circuit Pending JPS5797219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55173631A JPS5797219A (en) 1980-12-09 1980-12-09 Chattering preventing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55173631A JPS5797219A (en) 1980-12-09 1980-12-09 Chattering preventing circuit

Publications (1)

Publication Number Publication Date
JPS5797219A true JPS5797219A (en) 1982-06-16

Family

ID=15964186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55173631A Pending JPS5797219A (en) 1980-12-09 1980-12-09 Chattering preventing circuit

Country Status (1)

Country Link
JP (1) JPS5797219A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5911028A (en) * 1982-07-12 1984-01-20 Toko Inc Switch circuit provided with muting circuit
US5168181A (en) * 1990-05-25 1992-12-01 Sgs-Thomson Microelectronics S.R.L. Spike filtering circuit for logic signals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5911028A (en) * 1982-07-12 1984-01-20 Toko Inc Switch circuit provided with muting circuit
US5168181A (en) * 1990-05-25 1992-12-01 Sgs-Thomson Microelectronics S.R.L. Spike filtering circuit for logic signals

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