| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that there is a risk that voltage unbalance may occur at turn on, though switching timing is adjusted by a magnetic coupling means, in a serially connected circuit. <P>SOLUTION: The slippage of the gate signal timing of individual semiconductor switching elements connected in series is suppressed with magnetic coupling means, and a voltage unbalance caused by a difference in element property such as a tail current property, etc. is suppressed by adding a means for adjusting the charge time of input capacity, based on the element voltage at turn on. <P>COPYRIGHT: (C)2009,JPO&INPIT |
