JPS55680A - Detection switch - Google Patents

Detection switch

Info

Publication number
JPS55680A
JPS55680A JP2923879A JP2923879A JPS55680A JP S55680 A JPS55680 A JP S55680A JP 2923879 A JP2923879 A JP 2923879A JP 2923879 A JP2923879 A JP 2923879A JP S55680 A JPS55680 A JP S55680A
Authority
JP
Japan
Prior art keywords
resistance
diode
load
serial circuit
power source
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
JP2923879A
Other languages
Japanese (ja)
Inventor
Toshibumi Fukuyama
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 JP2923879A priority Critical patent/JPS55680A/en
Publication of JPS55680A publication Critical patent/JPS55680A/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
    • H03K17/73—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 dc voltages or currents

Landscapes

  • Thyristor Switches And Gates (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To reduce the current of the detection circuit down to such amount that the load is never driven by the resistance by connecting the load and the power source in series as well as the serial circuit of the resistance and the capacitor in parallel respectively to the serial circuit of the 3-terminal switching element and the diode. CONSTITUTION:The serial circuit of 3-terminal switching element 18 and constant voltage diode 19 is connected to the power source via load 27. Thus photoelectric switch DS features the double-wire system. At the same time, the serial circuit of resistance 20, constant voltage diode 24, resistance 25 and capacitor 21 is connected between the diodes of element 18 and diode 19. In addition, the connection between diode 24 and resistance 25 is connected to the cathode of element 18 via light emitting diode 26. Thus, when transistor 22 and then element 18 are turned off, the current given from the power source is reduced down to a slight amount by resistance 20. As a result, the load driving is prevented.
JP2923879A 1979-03-12 1979-03-12 Detection switch Pending JPS55680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2923879A JPS55680A (en) 1979-03-12 1979-03-12 Detection switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2923879A JPS55680A (en) 1979-03-12 1979-03-12 Detection switch

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP4308674A Division JPS5422819B2 (en) 1974-04-16 1974-04-16

Publications (1)

Publication Number Publication Date
JPS55680A true JPS55680A (en) 1980-01-07

Family

ID=12270651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2923879A Pending JPS55680A (en) 1979-03-12 1979-03-12 Detection switch

Country Status (1)

Country Link
JP (1) JPS55680A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57197920A (en) * 1981-05-29 1982-12-04 Matsushita Electric Works Ltd Signal transferring circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57197920A (en) * 1981-05-29 1982-12-04 Matsushita Electric Works Ltd Signal transferring circuit

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