Power supply apparatus with circuit load sensor

Details Power supply apparatus with circuit load sensor Power supply apparatus with circuit load sensor

H - Electricity

01

R

H01R 13/66 (2006.01) G01R 19/145 (2006.01) G01R 31/40 (2006.01) H01R 13/641 (2006.01) H01R 13/717 (2006.01)

Patent

CA 2265137

A power supply apparatus 10 with circuit load sensor provides an extension cord 20 having first and second ends extending from an enclosure 30. Within the enclosure, a power supply indicator circuit 40 lights an LED in response to the plug of the extension cord being inserted into a live outlet. Also within the enclosure, a power consumption indicator circuit 60 lights an LED in response to consumption of power by a load plugged into the socket of the extension cord. A nominal voltage drop across a TRIAC 70 carried in-line with the neutral conductor within the enclosure triggers the power consumption indicator circuit when the load draws current.

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