| 摘要 |
PURPOSE:To make an inverter small in size and light in weight by a method wherein reference waves are high frequency modulated. CONSTITUTION:Clock signals generated by a singal generating circuit 14 are supplied to a dividing circuit 15 and a triangular or saw tooth wave generating circuit 19. A portion of the dividing circuit 15 output is transmitted as a synchronizing signal to a transisterized driving circuit 10 and the other to a sine wave generating circuit 16 that outputs a reference sine wave. The reference sine wave is amplitude modulated by a modulator 17 and a portion thereof is outputted to a comparator 20 while the other portion thereof to a comparator 21 through a phase inversion circit 18. Signals phase modulated by a circuit 19 signal are obtained from the comparators 20 and 21 and are supplied to a switching circuit A through a transistorized driving circuit 4. The circuit A output is supplied to a demodulating circuit B through a transformer 5. Rectification and polarity change effected with help of synchronizing signals from circuit 10 cause sine waves to be outputted at point 12 through a filter 11. |
