Omni voltage direct current power supply

Details Omni voltage direct current power supply Omni voltage direct current power supply

2004-03-19

2009-08-04

Patel, Rajnikant B (Department: 2838)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S086000, C327S514000

Reexamination Certificate

active

07569996

ABSTRACT:
A battery operated LED lighting apparatus including: a battery outputting a battery voltage; a light emitting diode or array of light emitting diodes; and a power supply including a boost regulating circuit. The power supply being in communication with the battery and the light emitting diodes such that a constant voltage or constant current is supplied to the light emitting diodes as the battery discharges and the battery voltage falls below the output voltage. In a preferred embodiment the power supply further includes a buck regulator to maintain the proper output voltage when the battery voltage is greater than the output voltage.

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