Patent ID: 6507502
Filing Date: 2003-01-14
Classification: H02M,Y02B

Abstract:
A snubber circuit provided in a power transformer having at least a switch element operating for power transformation control, a magnetic substance storing and releasing a power energy in relation to power transformation that accompanies operation of said switch element, and a commutating diode conducting by means of the power energy stored in said magnetic substance, comprising at least:a first series circuit in which a capacitor and a diode are connected in series; and a second series circuit in which a coil and a diode are connected in series, wherein: said first series circuit is connected in parallel to said commutating diode in a state that the capacitor of said first series circuit is connected to a magnetic substance connecting side in said commutating diode; and said second series circuit is connected between a connecting portion of the capacitor and the diode in said first series circuit and a commutating diode non-connecting side in said magnetic substance.