JPS55145436A - Alternating current two-wire type contactless switch - Google Patents

Alternating current two-wire type contactless switch

Info

Publication number
JPS55145436A
JPS55145436A JP5274879A JP5274879A JPS55145436A JP S55145436 A JPS55145436 A JP S55145436A JP 5274879 A JP5274879 A JP 5274879A JP 5274879 A JP5274879 A JP 5274879A JP S55145436 A JPS55145436 A JP S55145436A
Authority
JP
Japan
Prior art keywords
circuit
terminal switching
output
switching element
trigger
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
JP5274879A
Other languages
Japanese (ja)
Inventor
Masa Mitsuda
Michiharu Kunihisa
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 JP5274879A priority Critical patent/JPS55145436A/en
Publication of JPS55145436A publication Critical patent/JPS55145436A/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
    • H03K17/94—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
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/952—Proximity switches using a magnetic detector using inductive coils

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To decrease the amount of the leak current and then secure the assured resetting of the three-terminal switching element to OFF, by amplifying the trigger transistor with the output of the near-by sensor circuit to give the control to the three-terminal switching element. CONSTITUTION:The AC power source 25 is connected in series to load 26 via wires 22 and 23, and three-terminal switching element 21 is connected to these two wires via rectifying circuit 24. Then near-by sensor circuit 11 is connected between the anode and the cathode of element 21 via current limiting resistance 44, and output transistor TR13 is turned on and off by the output of circuit 11. Here trigger TR31 is controlled by TR13 to perform the amplifying action, and thus the gate trigger current is supplied to element 21. And diode circuit 42 supplies the power to circuit 11 when element 21 is on. As a result, the amount of the leak current required by circuit 11 for sensing action can be decrease when element 21 is off, and at the same time element 21 can be reset of OFF in the assured way.
JP5274879A 1979-04-28 1979-04-28 Alternating current two-wire type contactless switch Pending JPS55145436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5274879A JPS55145436A (en) 1979-04-28 1979-04-28 Alternating current two-wire type contactless switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5274879A JPS55145436A (en) 1979-04-28 1979-04-28 Alternating current two-wire type contactless switch

Publications (1)

Publication Number Publication Date
JPS55145436A true JPS55145436A (en) 1980-11-13

Family

ID=12923523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5274879A Pending JPS55145436A (en) 1979-04-28 1979-04-28 Alternating current two-wire type contactless switch

Country Status (1)

Country Link
JP (1) JPS55145436A (en)

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