| 摘要 |
<p>The method involves calculating switching frequency for synchronizing turning ON and OFF of a switch among several switches (T1-T4) as a function of coil current variable. The switching frequency to be a predetermined low switching frequency is determined if switching frequency is lower than the predetermined low switching frequency. The switching frequency to be high switching frequency is determined, if switching frequency is greater than predetermined high switching frequency. The switch is switched to turn ON and OFF according to determined switching frequency.</p> |
