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JPS5799032A - Alternating current two-wire type contactless switch - Google Patents

Alternating current two-wire type contactless switch

Info

Publication number
JPS5799032A
JPS5799032A JP17482380A JP17482380A JPS5799032A JP S5799032 A JPS5799032 A JP S5799032A JP 17482380 A JP17482380 A JP 17482380A JP 17482380 A JP17482380 A JP 17482380A JP S5799032 A JPS5799032 A JP S5799032A
Authority
JP
Japan
Prior art keywords
turns
detection circuit
voltage
capacitor
alternating current
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
JP17482380A
Other languages
Japanese (ja)
Other versions
JPS609371B2 (en
Inventor
Yasuyuki Watanabe
Ryoichi Miyake
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 JP17482380A priority Critical patent/JPS609371B2/en
Publication of JPS5799032A publication Critical patent/JPS5799032A/en
Publication of JPS609371B2 publication Critical patent/JPS609371B2/en
Expired 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

Landscapes

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

Abstract

PURPOSE:To use a driving power supply eficiently, by floating a constant voltage circuit supplying the power supply to a detection circuit, when the output of the detection circuit is present. CONSTITUTION:When an output of a detection circuit S becomes from high to low level, a transistor (TR)Q2 turns off and a constant voltage circuit 3 is in floating state While the instantaneous value of the output of a rectifier 9 is small, a Zener diode Z2 is nonconductive, the thyristor 2 turns off, a capacitor C1 is charged with a voltage at a point D during this period, and a power supply is applied to the detection circuit S. When an instantaneous value is greater, the diode Z2 turns on and the thyristor 2 turns on, allowing to lower the voltage at point F. when the voltage of the capacitor C1 decreases, the diode Z2 turns off and the capacitor C1 is again charged.
JP17482380A 1980-12-11 1980-12-11 AC 2-wire non-contact switch Expired JPS609371B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17482380A JPS609371B2 (en) 1980-12-11 1980-12-11 AC 2-wire non-contact switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17482380A JPS609371B2 (en) 1980-12-11 1980-12-11 AC 2-wire non-contact switch

Publications (2)

Publication Number Publication Date
JPS5799032A true JPS5799032A (en) 1982-06-19
JPS609371B2 JPS609371B2 (en) 1985-03-09

Family

ID=15985281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17482380A Expired JPS609371B2 (en) 1980-12-11 1980-12-11 AC 2-wire non-contact switch

Country Status (1)

Country Link
JP (1) JPS609371B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63160413A (en) * 1986-12-23 1988-07-04 Keyence Corp Contactless two-wire ac switch
JPS63160412A (en) * 1986-12-23 1988-07-04 Keyence Corp Contactless two-wire ac switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63292869A (en) * 1987-05-26 1988-11-30 Canon Inc Image reader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63160413A (en) * 1986-12-23 1988-07-04 Keyence Corp Contactless two-wire ac switch
JPS63160412A (en) * 1986-12-23 1988-07-04 Keyence Corp Contactless two-wire ac switch

Also Published As

Publication number Publication date
JPS609371B2 (en) 1985-03-09

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