JPS54105457A - Alternating current switching contactless switch of two-wire system - Google Patents

Alternating current switching contactless switch of two-wire system

Info

Publication number
JPS54105457A
JPS54105457A JP959278A JP959278A JPS54105457A JP S54105457 A JPS54105457 A JP S54105457A JP 959278 A JP959278 A JP 959278A JP 959278 A JP959278 A JP 959278A JP S54105457 A JPS54105457 A JP S54105457A
Authority
JP
Japan
Prior art keywords
circuit
constant
voltage
current
leakage
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
JP959278A
Other languages
Japanese (ja)
Inventor
Hisatoshi Nodera
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP959278A priority Critical patent/JPS54105457A/en
Publication of JPS54105457A publication Critical patent/JPS54105457A/en
Pending 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
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/725—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To prevent leakage of a current from increasing even in case of a high operating voltage, by driving a transistor, which switches a trigger circuit composed of a constant-voltage diode, of a SCR by a sensor circuit. CONSTITUTION:To both output terminals of full-wave rectifier circuit 42, the anode and cathode of SCR42 are connected respectively and between the anode and gate, the series circuit is connected which consists of constant-voltage diode ZD43 and transistor Tr44, and Tr44 is driven by [NC output] of sensor circuit 1. At a normal time, the NC output is ''L'', Tr44 is OFF, and SCR42 is also OFF, so that a voltage limited by the constant-voltage circuit of Tr47, etc., will be supplied to circuit 1. For the purpose, resistance 48 is made high and the leakage of the current of ZD49 is reduced, so that the leakage of the current of this constant-voltage circuit can be reduced to a degree that it can be nearly ignored. Then, circuit 1 is made into a constant-impedance circuit, so that the leakage of the whole current can be reduced to a small constant value through the operation of the constant-voltage circuit within the wide range of a power voltage.
JP959278A 1978-01-31 1978-01-31 Alternating current switching contactless switch of two-wire system Pending JPS54105457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP959278A JPS54105457A (en) 1978-01-31 1978-01-31 Alternating current switching contactless switch of two-wire system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP959278A JPS54105457A (en) 1978-01-31 1978-01-31 Alternating current switching contactless switch of two-wire system

Publications (1)

Publication Number Publication Date
JPS54105457A true JPS54105457A (en) 1979-08-18

Family

ID=11724590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP959278A Pending JPS54105457A (en) 1978-01-31 1978-01-31 Alternating current switching contactless switch of two-wire system

Country Status (1)

Country Link
JP (1) JPS54105457A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63501539A (en) * 1985-09-24 1988-06-09 スクウエア−　デイ−　カンパニ− Low leakage AC proximity switch circuit
JP2016025457A (en) * 2014-07-18 2016-02-08 パナソニックＩｐマネジメント株式会社 Switching arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63501539A (en) * 1985-09-24 1988-06-09 スクウエア−　デイ−　カンパニ− Low leakage AC proximity switch circuit
JP2016025457A (en) * 2014-07-18 2016-02-08 パナソニックＩｐマネジメント株式会社 Switching arrangement

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