Pulse width modulation inverter circuit and control method...

Details Pulse width modulation inverter circuit and control method... Pulse width modulation inverter circuit and control method...

2007-07-10

2007-07-10

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S224000, C315S219000, C315S307000, C315S2090SC, C315S244000, C315SDIG002, C363S041000, C363S050000, C363S026000

Reexamination Certificate

active

10907742

ABSTRACT:
A pulse width modulation inverter circuit is provided. The circuit includes a power switch driver, a power switch, a transformer unit, a feedback detector unit, and a voltage control oscillator. The circuit is electrically coupled to the DC power source to drive a load. The circuit adjusts the pulse width of the signal outputted from the power switch driver according to the voltage inputted to the DC power source. Accordingly, the circuit can maintain a fixed input voltage received by the fluorescent tube. Thus, the high input voltage but low output phenomenon can be avoided.

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