Inverter apparatus

Details Inverter apparatus Inverter apparatus

2007-04-11

2009-11-24

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S276000, C315S307000, C315S312000

Reexamination Certificate

active

07622870

ABSTRACT:
A switching circuit includes a plurality of transistors connected to a primary winding of the transformer and alternately applies an input voltage and a ground voltage to the primary winding according to turning-on and turning-off of each of the transistors. A plurality of capacitors are provided to the respective fluorescent lamps. One ends of the capacitors are commonly connected to a secondary winding of the transformer, and the other ends thereof are connected to the respective fluorescent lamps. A control circuit monitors a current flowing through a predetermined current path among current paths of the entire circuits including an inverter and the fluorescent lamps and performs feedback control of the turning-on and turning-off states of a plurality of the transistors of the switching circuit to adjust supply of switching power to the primary winding of the transformer so that the monitored current can be maintained in a predetermined condition.

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Chinese Office Action for Chinese Patent Application No. 200710096091.3 issued Oct. 31, 2008 with English Translation.
Chinese Office Action for Chinese Application No. 200710096091.3 issued May 8, 2009 with English translation.

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