GB833686A - Improvements relating to electrical control circuit arrangements - Google Patents

Improvements relating to electrical control circuit arrangements

Info

Publication number
GB833686A
GB833686A GB39323/56A GB3932356A GB833686A GB 833686 A GB833686 A GB 833686A GB 39323/56 A GB39323/56 A GB 39323/56A GB 3932356 A GB3932356 A GB 3932356A GB 833686 A GB833686 A GB 833686A
Authority
GB
United Kingdom
Prior art keywords
relay
photo
cell
contacts
spring
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.)
Expired
Application number
GB39323/56A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of GB833686A publication Critical patent/GB833686A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/24—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil having light-sensitive input

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

833,686. Photo-electrically controlled lighting. GENERAL ELECTRIC CO. Dec. 27, 1956 [Dec. 28, 1955], No. 39323/56. Class 40 (3). [Also in Group XXXVII] A photo-conductive control circuit arrangement, particularly for turning street lights on and off at desired ambient light levels, comprises a source of supply voltage connected in series with the operating winding 1 of a relay 2 and with a photo-conductive cell 3, the relay having contacts 10 operated by an over-centre snap action mechanism having an armature differentially controlled by a spring bias and the magnetic attraction of the relay winding. The circuit under control, e.g. the one or more lamps 13, is connected to the source of supply voltage via the contacts 10. The relay 2 comprises an armature 6 biased by a spring 7 to the full line position and connected by a bow spring 8 to a flexible support member 9 for one of the contacts 10 of a switch whose other contact is mounted on a support member 11. A cadmium sulphide cell is preferred as the photo-conductor, which may be of the microcrystalline layer type in which the sensitive material has been deposited by an evaporative process. The cell may be of the interdigital electrode type. The impedance of the cell is preferably substantially equal to the impedance of the relay winding.
GB39323/56A 1955-12-28 1956-12-27 Improvements relating to electrical control circuit arrangements Expired GB833686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US833686XA 1955-12-28 1955-12-28

Publications (1)

Publication Number Publication Date
GB833686A true GB833686A (en) 1960-04-27

Family

ID=22177860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39323/56A Expired GB833686A (en) 1955-12-28 1956-12-27 Improvements relating to electrical control circuit arrangements

Country Status (1)

Country Link
GB (1) GB833686A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256402A (en) * 1964-01-02 1966-06-14 Gen Electric Switch relay for use in electric motors
EP0437003A2 (en) * 1990-01-08 1991-07-17 Uchiya Thermostat Co. Actuator with a built-in reed switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256402A (en) * 1964-01-02 1966-06-14 Gen Electric Switch relay for use in electric motors
EP0437003A2 (en) * 1990-01-08 1991-07-17 Uchiya Thermostat Co. Actuator with a built-in reed switch
EP0437003A3 (en) * 1990-01-08 1991-08-07 Uchiya Thermostat Co. Actuator with a built-in reed switch

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