JPS56134832A - Two-wire photoelectric switch for alternating current and direct current - Google Patents

Two-wire photoelectric switch for alternating current and direct current

Info

Publication number
JPS56134832A
JPS56134832A JP3710880A JP3710880A JPS56134832A JP S56134832 A JPS56134832 A JP S56134832A JP 3710880 A JP3710880 A JP 3710880A JP 3710880 A JP3710880 A JP 3710880A JP S56134832 A JPS56134832 A JP S56134832A
Authority
JP
Japan
Prior art keywords
current
receiving circuit
light projecting
photoelectric switch
resistance
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
JP3710880A
Other languages
Japanese (ja)
Inventor
Yasuyuki Watanabe
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 JP3710880A priority Critical patent/JPS56134832A/en
Publication of JPS56134832A publication Critical patent/JPS56134832A/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 eliminate the response delay to use the two-wire photoelectric switch for AC and DC, by connecting the connection point between the transistor and the constant-voltage element to the light projecting and receiving circuit side of the current limiting resistance and by providing a diode bridge between power supply lines. CONSTITUTION:When the output signal becomes ''H'', transistors 17 and 20 are turned on, and a current is flowed through transistor 20, and therefore, a large current is flowed to load 23. Meanwhile, since a sufficient current cannot be supplied to light projecting and receiving circuit 20 through resistance 14, a current is supplied to light projecting and receiving circuit 10 and capacitor 13 directly from the cathode of the Zener diode through no resistance 14. When the output signal becomes ''L'', transistors 17 and 20 are turned off immediately. Since diode bridge 21 and smoothing capacitor 13 are provided, this switch is used for the AC power source as well as the DC power source.
JP3710880A 1980-03-24 1980-03-24 Two-wire photoelectric switch for alternating current and direct current Pending JPS56134832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3710880A JPS56134832A (en) 1980-03-24 1980-03-24 Two-wire photoelectric switch for alternating current and direct current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3710880A JPS56134832A (en) 1980-03-24 1980-03-24 Two-wire photoelectric switch for alternating current and direct current

Publications (1)

Publication Number Publication Date
JPS56134832A true JPS56134832A (en) 1981-10-21

Family

ID=12488397

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3710880A Pending JPS56134832A (en) 1980-03-24 1980-03-24 Two-wire photoelectric switch for alternating current and direct current

Country Status (1)

Country Link
JP (1) JPS56134832A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057221U (en) * 1983-09-26 1985-04-22 シャープ株式会社 Tuner double tuning circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057221U (en) * 1983-09-26 1985-04-22 シャープ株式会社 Tuner double tuning circuit

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