JPS5592038A - Light receiving switch - Google Patents

Light receiving switch

Info

Publication number
JPS5592038A
JPS5592038A JP16590378A JP16590378A JPS5592038A JP S5592038 A JPS5592038 A JP S5592038A JP 16590378 A JP16590378 A JP 16590378A JP 16590378 A JP16590378 A JP 16590378A JP S5592038 A JPS5592038 A JP S5592038A
Authority
JP
Japan
Prior art keywords
light
load
irradiated
power source
lamp
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
JP16590378A
Other languages
Japanese (ja)
Inventor
Yukio Iitaka
Toshiro Abe
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP16590378A priority Critical patent/JPS5592038A/en
Publication of JPS5592038A publication Critical patent/JPS5592038A/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

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To perform the switch operation of hysteresis characteristic by turning on a load transistor to light a lamp when no light is irradiated to an optical oscillation element and by causing to the optical oscillation element to oscillate to extinguish the lamp when a light is irradiated to the optical oscillation element to achieve a fixed brightness. CONSTITUTION:A series circuit consisting of load 6 of a lamp and load controlling transistor Tr7 is connected to DC power source 5a, and optical oscillation element 8 is connected to DC power source 5a through high resistance R1, and DC power source 5a supplies the power source voltage across the collector and the emitter of Tr7. Now, when ambience is dark and no external light is irradiated to element 8, element 8 is turned off, and Tr7 is turned on to light load 6. Next, when ambience becomes bright and a light is irradiated to element to achieve a fixed brightness, element 8 starts oscillation and flows a large current gradually and turns off Tr7 to extinguish load 6.
JP16590378A 1978-12-29 1978-12-29 Light receiving switch Pending JPS5592038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16590378A JPS5592038A (en) 1978-12-29 1978-12-29 Light receiving switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16590378A JPS5592038A (en) 1978-12-29 1978-12-29 Light receiving switch

Publications (1)

Publication Number Publication Date
JPS5592038A true JPS5592038A (en) 1980-07-12

Family

ID=15821176

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16590378A Pending JPS5592038A (en) 1978-12-29 1978-12-29 Light receiving switch

Country Status (1)

Country Link
JP (1) JPS5592038A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643761A1 (en) * 1989-02-24 1990-08-31 Sgs Thomson Microelectronics COMPATIBLE TTL OUTPUT CIRCUIT WITH HIGH SWITCHING SPEED
KR20190086173A (en) * 2018-01-12 2019-07-22 고현규 Sale product analysis and promotion system of on-line shopping mall

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643761A1 (en) * 1989-02-24 1990-08-31 Sgs Thomson Microelectronics COMPATIBLE TTL OUTPUT CIRCUIT WITH HIGH SWITCHING SPEED
KR20190086173A (en) * 2018-01-12 2019-07-22 고현규 Sale product analysis and promotion system of on-line shopping mall

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