Patent ID: 7095637

Claim:
A method of determining a working voltage of an inverter, characterized by the following steps: obtaining a lowest voltage and a highest voltage, wherein said inverter receives input voltage cycles of an alternating current and obtains a lowest voltage and a highest voltage of said voltage cycles of said alternating current (step 1 ); rectifying said alternating current, wherein said input voltage cycles of said alternating current in step 1 is rectified into voltage cycles of a direct current, and said alternating current signal is rectified into a direct current signal (step 2 ); obtaining voltage pulses, wherein a working frequency is set to divide each one of said voltage cycles of said direct current in step 2 , and each one of said voltage cycles of said direct current, which ranges in said lowest voltage–said highest voltage–said lowest voltage manner, is divided into multiple continuous voltage pulses (step 3 ); outputting a variable voltage, wherein a transformer unit of said inverter receives each one of said multiple continuous voltage pulses, and said transformer unit acts in response to each one of the multiple continuous voltage pulses and corresponding to said voltage cycle ranging between said lowest voltage and said highest voltage to output a variable voltage signal to a load, and on said load receiving said variable voltage signal, said load begins to operate (step 4 ).