JPS57132422A - Automatic recovering type switching circuit - Google Patents

Automatic recovering type switching circuit

Info

Publication number
JPS57132422A
JPS57132422A JP1696881A JP1696881A JPS57132422A JP S57132422 A JPS57132422 A JP S57132422A JP 1696881 A JP1696881 A JP 1696881A JP 1696881 A JP1696881 A JP 1696881A JP S57132422 A JPS57132422 A JP S57132422A
Authority
JP
Japan
Prior art keywords
operational amplifier
switching circuit
output
becomes
signal
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.)
Granted
Application number
JP1696881A
Other languages
Japanese (ja)
Other versions
JPS6034293B2 (en
Inventor
Kenichi Hayashida
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.)
TSUUDEN KK
Tsuden KK
Original Assignee
TSUUDEN KK
Tsuden 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 TSUUDEN KK, Tsuden KK filed Critical TSUUDEN KK
Priority to JP1696881A priority Critical patent/JPS6034293B2/en
Publication of JPS57132422A publication Critical patent/JPS57132422A/en
Publication of JPS6034293B2 publication Critical patent/JPS6034293B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To prevent a malfunction caused by a gentle variation of a signal, by inserting a leakage resistance in a steady state, in an automatic recovering type switching circuit. CONSTITUTION:In case when a detecting signal DT is V1 in a steady state, an output S1 of an operational amplifier 10 becomes as shown in the expression on the right, and it is inputted to a negative input terminal of an operational amplifier 13. A0 shown in the right expression denotes an open loop gain of the operational amplifier 10. Subsequently, to a positive input terminal of the operational amplifier 13, the detecting signal DT is inputted through a filter 12 after its voltage has been dropped by a variable resistor VR10, therefore, an output S3 of the operational amplifier 13 becomes binary ''L''. As a result, a transistor Q3 of a switching circuit 15 is turned off and a relay 14 is cut off. Also, the output S3 is inverted by an inverter NT and becomes ''H'', and since a resistance R15 as a leakage resistance is inserted in parallel with a capacitor C10, no malfunction occurs against a gentle variation of a signal.
JP1696881A 1981-02-09 1981-02-09 Automatic reset type switch circuit Expired JPS6034293B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1696881A JPS6034293B2 (en) 1981-02-09 1981-02-09 Automatic reset type switch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1696881A JPS6034293B2 (en) 1981-02-09 1981-02-09 Automatic reset type switch circuit

Publications (2)

Publication Number Publication Date
JPS57132422A true JPS57132422A (en) 1982-08-16
JPS6034293B2 JPS6034293B2 (en) 1985-08-08

Family

ID=11930885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1696881A Expired JPS6034293B2 (en) 1981-02-09 1981-02-09 Automatic reset type switch circuit

Country Status (1)

Country Link
JP (1) JPS6034293B2 (en)

Also Published As

Publication number Publication date
JPS6034293B2 (en) 1985-08-08

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