JPS60150320A - Electronic switch - Google Patents

Electronic switch

Info

Publication number
JPS60150320A
JPS60150320A JP59006440A JP644084A JPS60150320A JP S60150320 A JPS60150320 A JP S60150320A JP 59006440 A JP59006440 A JP 59006440A JP 644084 A JP644084 A JP 644084A JP S60150320 A JPS60150320 A JP S60150320A
Authority
JP
Japan
Prior art keywords
circuit
short
state
fet7
thyristor
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
JP59006440A
Other languages
Japanese (ja)
Other versions
JPH043693B2 (en
Inventor
Kiyoshi Miyamoto
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
Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP59006440A priority Critical patent/JPH043693B2/ja
Priority to US06/660,675 priority patent/US4710699A/en
Priority to DE8484112423T priority patent/DE3481107D1/en
Priority to AT84112423T priority patent/AT49683T/en
Priority to EP84112423A priority patent/EP0147551B1/en
Publication of JPS60150320A publication Critical patent/JPS60150320A/en
Publication of JPH043693B2 publication Critical patent/JPH043693B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
    • H03K17/0824—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in thyristor switches
    • 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
    • H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector

Abstract

PURPOSE:To attain an electronic switch with ease of use by enabling the short- circuit protection to be released by simply spacing away an object to be detected from a sensor circuit even if the short-circuit state is eliminated with a load short-circuited. CONSTITUTION:When an object approaches a proximity switch with the load L short-circuited, a sensor circuit 10 outputs an NL output, and a large current flows to a thyristor 6 and an FET7, but a power voltage given to the sensor circuit 10 is limited by a constant voltage circuit 9 and the short-circuit current is limited by the constant current characteristic of the FET7. Just thereafter, the thyristor 8 is turned on by a voltage division circuit comprising resistors R22, R23. Thus, the short-circuit current is cut off by the FET7. After the short-circuit state is finished, if the proximity switch detects no object, the NL output restores to L to stop the holding of the thyristor 8. Thus, the short-circuit state is eliminated, the state restores automatically to the stand-by state.
JP59006440A 1983-10-14 1984-01-18 Expired - Lifetime JPH043693B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP59006440A JPH043693B2 (en) 1984-01-18 1984-01-18
US06/660,675 US4710699A (en) 1983-10-14 1984-10-15 Electronic switching device
DE8484112423T DE3481107D1 (en) 1983-10-14 1984-10-15 ELECTRONIC CIRCUIT ARRANGEMENT.
AT84112423T AT49683T (en) 1983-10-14 1984-10-15 ELECTRONIC CIRCUIT ARRANGEMENT.
EP84112423A EP0147551B1 (en) 1983-10-14 1984-10-15 Electronic switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59006440A JPH043693B2 (en) 1984-01-18 1984-01-18

Publications (2)

Publication Number Publication Date
JPS60150320A true JPS60150320A (en) 1985-08-08
JPH043693B2 JPH043693B2 (en) 1992-01-24

Family

ID=11638457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59006440A Expired - Lifetime JPH043693B2 (en) 1983-10-14 1984-01-18

Country Status (1)

Country Link
JP (1) JPH043693B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63113332U (en) * 1987-01-14 1988-07-21
JP2013228868A (en) * 2012-04-25 2013-11-07 Japan Steel Works Ltd:The Ac switch device including element protection function at load short circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057226U (en) * 1983-09-26 1985-04-22

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057226B2 (en) * 1981-03-31 1985-12-13 Fujitsu Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057226U (en) * 1983-09-26 1985-04-22

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63113332U (en) * 1987-01-14 1988-07-21
JP2013228868A (en) * 2012-04-25 2013-11-07 Japan Steel Works Ltd:The Ac switch device including element protection function at load short circuit

Also Published As

Publication number Publication date
JPH043693B2 (en) 1992-01-24

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