JPS56134834A - Alternating current two-wire photoelectric switch - Google Patents

Alternating current two-wire photoelectric switch

Info

Publication number
JPS56134834A
JPS56134834A JP3711080A JP3711080A JPS56134834A JP S56134834 A JPS56134834 A JP S56134834A JP 3711080 A JP3711080 A JP 3711080A JP 3711080 A JP3711080 A JP 3711080A JP S56134834 A JPS56134834 A JP S56134834A
Authority
JP
Japan
Prior art keywords
transistor
current
flowed
turned
receiving circuit
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
JP3711080A
Other languages
Japanese (ja)
Inventor
Yasuyuki Watanabe
Toshibumi Fukuyama
Hideaki Hachidan
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 JP3711080A priority Critical patent/JPS56134834A/en
Publication of JPS56134834A publication Critical patent/JPS56134834A/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
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
    • H03K17/795—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
    • H03K17/7955—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors using phototransistors

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To reduce the residual voltage at the turning-on time and suppress heat evolution, by flowing the current, which should be flowed to the control terminal, to another part in accordance with the output of the light projecting and receiving circuit by the transistor. CONSTITUTION:When the output of light projecting and receiving circuit 3 is ''H'', transistors 13 and 11 are turned on; and when capacitor 17 is charged to become a Zener voltage or more, Zener diode 6 is turned on, and the current is flowed to the base of transistor 12. The base current of transistor 11 passes through transistor 12 and is flowed through transistor 13 furthermore, and transistor 11 is turned off. At this time, a constant current is supplied to the light projecting and receiving circuit 3 side.
JP3711080A 1980-03-24 1980-03-24 Alternating current two-wire photoelectric switch Pending JPS56134834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3711080A JPS56134834A (en) 1980-03-24 1980-03-24 Alternating current two-wire photoelectric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3711080A JPS56134834A (en) 1980-03-24 1980-03-24 Alternating current two-wire photoelectric switch

Publications (1)

Publication Number Publication Date
JPS56134834A true JPS56134834A (en) 1981-10-21

Family

ID=12488454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3711080A Pending JPS56134834A (en) 1980-03-24 1980-03-24 Alternating current two-wire photoelectric switch

Country Status (1)

Country Link
JP (1) JPS56134834A (en)

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