| 摘要 |
A power converter (10) is disclosed which includes an RCD clamp (60) across a primary winding (21). The RCD (60) clamps the voltage across a primary winding (21) of the converter (10), during a commutation part of an operating cycle. The capacitance part (61) of the RCD clamp (60) is dimensioned so as to be substantially discharged during the remainder of the secondary stroke, and to be charged to the clamping voltage during the commutation part. A resistance (64) in series with the capacitance (61) may be dimensioned such that the voltage across it is approximately equal to the clamping voltage at the start of the commutation period.
|
