| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a compact flyback transformer having low power consumption by suppressing an input current to the flyback transformer used for a PWM-control-system high-voltage generation circuit. SOLUTION: The number of layers of the secondary coil of the flyback transformer used for the PWM-control-system high-voltage generation circuit is set to six or more, thus reducing the distribution capacity of the flyback transformer, increasing the frequency of a quiescent vibration pulse; and at the same time, decreasing the pulse width of a flyback pulse, and hence increasing the speed of timing for turning on an FET for control for reducing the input current Ipp to the flyback transformer.</p> |
