| 摘要 |
PROBLEM TO BE SOLVED: To supply A.C. output approximating to a neary sine wave to a load to easily restrain noise, in a electric power converting device for converting D.C. voltage to A.C. voltage by using a Cockcroft circuit and a switch element. SOLUTION: Respective capacitors C11 -C14 , and C21 -C24 of a Rockcroft circuit are charged up to power source voltage E by switching main switch elements Sk1 and Sk2 , to control a polarity of load voltage by switch elements Sd1 and Sd2 , and an amplitude of the load voltage by switch elements S11 , S12 , SA13 , and S14 to supply A.C. output to a load circuit. Also, a stage-like load voltage waveform is made into a smooth A.C. waveform by using the load circuit wherein an inductor Lz is connected in series to the parallel circuit of a load Z and a capacitor Cz. |
