JPS5587971A - Ac two-wire type transmission photoelectric switch - Google Patents

Ac two-wire type transmission photoelectric switch

Info

Publication number
JPS5587971A
JPS5587971A JP16470878A JP16470878A JPS5587971A JP S5587971 A JPS5587971 A JP S5587971A JP 16470878 A JP16470878 A JP 16470878A JP 16470878 A JP16470878 A JP 16470878A JP S5587971 A JPS5587971 A JP S5587971A
Authority
JP
Japan
Prior art keywords
emission unit
light emission
power supply
current
light
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
JP16470878A
Other languages
Japanese (ja)
Inventor
Yasuyuki Watanabe
Ichiro Higuchi
Kazuyuki Ogata
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 JP16470878A priority Critical patent/JPS5587971A/en
Publication of JPS5587971A publication Critical patent/JPS5587971A/en
Pending legal-status Critical Current

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE: To irradiate a pulse light having high peak value from a light emission unit by synchronizing the light emission unit through an AC power supply with a photodetector, setting the pulse light irradiated from the light emission unit at special phase of the frequency of the current from the AC power supply and improving the duty factor thereof.
CONSTITUTION: An LED 128 in a light emission unit 100 is driven once per half wave at every half wave in predetermined phase in synchronization with the current from an AC power supply when full wave rectified waveform falls. A light receiving circuit 310 consists of a photodetector 311 and amplifying transistors 312, 313. When the pulse light is shielded by an article 200 to be detected, a SCR 332 is turned ON to thereby cause a load L to flow a current.
COPYRIGHT: (C)1980,JPO&Japio
JP16470878A 1978-12-26 1978-12-26 Ac two-wire type transmission photoelectric switch Pending JPS5587971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16470878A JPS5587971A (en) 1978-12-26 1978-12-26 Ac two-wire type transmission photoelectric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16470878A JPS5587971A (en) 1978-12-26 1978-12-26 Ac two-wire type transmission photoelectric switch

Publications (1)

Publication Number Publication Date
JPS5587971A true JPS5587971A (en) 1980-07-03

Family

ID=15798363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16470878A Pending JPS5587971A (en) 1978-12-26 1978-12-26 Ac two-wire type transmission photoelectric switch

Country Status (1)

Country Link
JP (1) JPS5587971A (en)

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