H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 41/28 (2006.01) F21S 9/02 (2006.01) H02H 7/18 (2006.01)
Patent
CA 2639447
A lamp includes a light source, a power tool battery for providing a DC voltage level, and a base for housing the power tool battery. A stem is coupled to the base and supports the light source. A power inverter converts the DC voltage level to an AC voltage level, and a current sensing circuit operatively coupled to the converter or the inverter senses an over-current condition when the converter or the inverter draws more than a predetermined amount of current. The converter or inverter is disabled if the over-current condition continues for more than a predetermined amount of time so that the light source receives the AC voltage level and is illuminated for the predetermined amount of time before power is removed.
Boyles Samuel
Elsea David
Eastway Fair Company Limited
Macrae & Co.
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