| http://www.w3.org/ns/prov#value | - FIELD OF THE INVENTION The present invention relates in general to power supply systems and subsystems thereof, and is particularly directed to a method and apparatus for combining a pulse width modulation (PWM) signal and a high frequency switching signal to control AC power being supplied to a high voltage device, such as a cold cathode fluorescent lamp of the type employed for backlighting a li
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