JPS5566124A - Chattering preventing circuit - Google Patents

Chattering preventing circuit

Info

Publication number
JPS5566124A
JPS5566124A JP13952278A JP13952278A JPS5566124A JP S5566124 A JPS5566124 A JP S5566124A JP 13952278 A JP13952278 A JP 13952278A JP 13952278 A JP13952278 A JP 13952278A JP S5566124 A JPS5566124 A JP S5566124A
Authority
JP
Japan
Prior art keywords
output
terminal
circuit
switch
sink current
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
JP13952278A
Other languages
Japanese (ja)
Inventor
Tetsuo Makino
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13952278A priority Critical patent/JPS5566124A/en
Publication of JPS5566124A publication Critical patent/JPS5566124A/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

Landscapes

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

Abstract

PURPOSE:To obtain a chattering preventing circuit which can secure a large amount of the output current with no increase of the low-level voltage by adding the FF comprising the inverter and the transistor plus the switch means along with the addition of the wiring and the alteration of the using elements. CONSTITUTION:With make of mobile terminal C of switch 7 to the side of fixed terminal No, the FF consisting of NAND circuits 8 and 9 reverses with output 12 turned to the low level. Then the low-level sink current flows to the earth through terminals No and C, and thus the maximum sink current can be flowed enough by the amount equivalent to the current capacity of switch 7 with no limitation by the maximun sink current of NAND circuit 9. Thus the element of a small allowance current capacity can be used. And output 12 has no change although the chattering occurs at the side of terminal No since the FF suppresses output 12 to a low level. The output end of circuit 9 floats up from the earth while the chattering occurs at the change-over time of switch 7 and terminal C is apart from terminal No, and as a result the sink current flows to circuit 9.
JP13952278A 1978-11-13 1978-11-13 Chattering preventing circuit Pending JPS5566124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13952278A JPS5566124A (en) 1978-11-13 1978-11-13 Chattering preventing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13952278A JPS5566124A (en) 1978-11-13 1978-11-13 Chattering preventing circuit

Publications (1)

Publication Number Publication Date
JPS5566124A true JPS5566124A (en) 1980-05-19

Family

ID=15247240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13952278A Pending JPS5566124A (en) 1978-11-13 1978-11-13 Chattering preventing circuit

Country Status (1)

Country Link
JP (1) JPS5566124A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57101435U (en) * 1980-12-13 1982-06-22
JP2014531122A (en) * 2011-10-20 2014-11-20 フィッシャーコントロールズ インターナショナル リミテッド ライアビリティー カンパニー Multi-touch switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57101435U (en) * 1980-12-13 1982-06-22
JP2014531122A (en) * 2011-10-20 2014-11-20 フィッシャーコントロールズ インターナショナル リミテッド ライアビリティー カンパニー Multi-touch switch

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