Led light sting with zener diodes or resistors as shunts

Details Led light sting with zener diodes or resistors as shunts Led light sting with zener diodes or resistors as shunts

H - Electricity

05

B

H05B 33/08 (2006.01)

Patent

CA 2642476

A light string in one embodiment includes a plurality of lamps connected in series, each lamp having a shunt Zener diode; and a rectifier. An anode of the Zener diode of each lamp is connected to a cathode of the LED thereof, the cathode of the Zener diode of each lamp is connected to the anode of the LED thereof, the cathode of the Zener diode of the lamp proximate the rectifier is connected to a positive terminal of an output of the rectifier, and the anode of the Zener diode of the lamp distal the rectifier is connected to a negative terminal of the output of the rectifier. The Zener diodes are replaced by resistors in another embodiment. Hence, a burned out LED of one lamp will not adversely affect a normal operation of the light string.

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