| 摘要 |
PURPOSE:To simplify the overall circuit constitution by a method wherein the same elements are utilized for phase control function and high frequency transmitting function. CONSTITUTION:The AC power supply voltage is rectified by means of a diode 14 to be supplied for zero-cross pulse generator 1 and converter transformer 11. The phase control circuit 18 outputs pulses with pulse width required for making output constant. The phase control signals from the phase control circuit 18 and the high frequency pulse signals from the high frequency oscillator 15 are supplied for AND circuit 16. The output from AND circuit 16 is supplied for base driving circuit 17 and amplified to drive switching transistor 13. The output from converter transformer 11 may be rectified and smoothed by means of the diode 6 and condenser 7. |
