Patent ID: 7045969
Filing Date: 2006-05-16
Classification: H05B,Y02B,Y10S

Abstract:
1. An inverter circuit capable of adjusting power factor to improve utilization of an electric power source, comprising: an electric power source to provide an AC signal and a maximum input voltage and a minimum input voltage of the AC signal; a rectification unit to receive the AC signal and transform the AC signal to a pulse DC signal; an actuation unit to receive the pulse DC signal and output an operation frequency to divide the duty cycle of the minimum input voltage-maximum input voltage-minimum input voltage to a plurality of continuous voltage pulses; a transformer to receive the pulse DC signal corresponding to each voltage pulse and output a voltage according to the input voltage of each voltage pulse, the output voltage forming an altering duty cycle of the minimum input voltage-maximum input voltage-minimum input voltage; and a cold cathode lamp to receive the output voltage to generate light which blinks in a dark-light-dark manner according to the altering duty cycle.