Method of setting desired RMS load voltage in a lamp

Details Method of setting desired RMS load voltage in a lamp Method of setting desired RMS load voltage in a lamp

2007-01-30

2007-01-30

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

C315S287000, C315S360000

Reexamination Certificate

active

11153272

ABSTRACT:
A method of converting a line voltage to a desired RMS load voltage in a lamp includes the steps of pulse width modulating a load voltage with a pulse width modulation circuit, triggering conduction in the pulse width modulation circuit independently of a line voltage magnitude with a time-based signal source that defines a duty cycle of the pulse width modulation circuit, and adjusting the RMS load voltage to the desired RMS load voltage by adjusting the triggering of conduction in the pulse width modulation circuit based on a comparison of the RMS load voltage to a reference.

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