Current control apparatus for fluorescent lamps

Details Current control apparatus for fluorescent lamps Current control apparatus for fluorescent lamps

2005-11-29

2005-11-29

Wong, Don (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

C315S291000

Reexamination Certificate

active

06969956

ABSTRACT:
A current control apparatus for fluorescent lamps adopted for use on high voltage actuated a fluorescent lamp includes a high frequency pulse modulator to provide voltage distribution signals, a power switch which is a MOSFET to output actuation signals, a conversion unit to receive the voltage distribution signals and perform voltage transformation, a piezoelectric transformer to receive the transformed voltage and perform voltage transformer, and the fluorescent lamp connecting to the piezoelectric transformer. The high frequency pulse modulator obtains a feedback current from the output ends of the fluorescent lamps through the signal processor to redistribute current and maintain evenness of the current in the fluorescent lamp.

REFERENCES:
patent: 4873471 (1989-10-01), Dean et al.
patent: 6016052 (2000-01-01), Vaughn
patent: 6380695 (2002-04-01), Lin et al.
patent: 6747421 (2004-06-01), Kohn

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