| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce an input current ripple, thereby solving an EMI problem and improving converter efficiency. <P>SOLUTION: A converter circuit used to convert a DC input into an AC output has two first and second series circuits, at least one clamp capacitor, and at least one transformer. Each of the series circuits is arranged in parallel with a DC input section. The first series circuit has one switch circuit network and at least one primary winding of transformer. The second series circuit has one voltage-clamp circuit network and at least one primary winding of transformer. The first series circuit and second series circuit are connected with at least one clamp capacitor, and this capacitor is attached to each series circuit with nodes between primary windings of transformers. The voltage-clamp circuit network may be configured by two sub-circuits out of three sub-circuits of a sub-circuit of diode, a sub-circuit of resistor-capacitor-diode, and a sub-circuit of MOSFET capacitor. <P>COPYRIGHT: (C)2010,JPO&INPIT |
