Fiber-optic anticycling device for street lamps

Details Fiber-optic anticycling device for street lamps Fiber-optic anticycling device for street lamps

F - Mech Eng,Light,Heat,Weapons

21

V

F21V 25/04 (2006.01) F21V 23/00 (2006.01) H05B 37/03 (2006.01)

Patent

CA 2086408

An anti-cycling device for high pressure sodium lamps detects an abnormal cycling condition by using a fiber-optic cable that extends between an anti-cycling controller board and the lamp itself. An outer end of the cable is arranged so that light emitted by the lamp will be transmitted to the controller board. A photocell mounted on the controller board, at the other end of the cable, transmits a variable magnitude electrical signal to the circuitry on the controller board. The signal varies in accordance with light being transmitted or not transmitted through the cable, as the case may be, corresponding to a cycling condition. In this manner, the controller board is able to detect a cycling condition, and thereby cause the power supply to the lamp to be cut off.

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