Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit
Reexamination Certificate
2006-12-12
2006-12-12
Patel, Rajnikant B. (Department: 2838)
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Impedance or current regulator in the supply circuit
C315S307000, C363S016000
Reexamination Certificate
active
07148633
ABSTRACT:
A DC/AC inverter provided for transforming a DC voltage source into an AC power source, wherein the AC signal is used for driving a fluorescent lamp. The inverter comprises a half-bridge switch circuitry electrically connected to the DC voltage source for outputting an AC signal, a resonant tank electrically connected between the half-bridge switch circuitry and the fluorescent lamp, for stepping up and filtering the AC signal into a high-voltage AC power source which is supplied to a load, and a controller feeding back an output of the fluorescent lamp, providing a pulse width modulation signal for turning on and off the half-bridge switch circuitry, such that the fluorescent lamp can operate consistently and provide a consistent brightness.
REFERENCES:
patent: 5677602 (1997-10-01), Paul et al.
Huang Shih-chung
Hung Chien-pang
Lee Chih-shun
Yu Chung-che
Beyond Innovation Technology
Beyond Innovation Technology Co., Ltd
Patel Rajnikant B.
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