Patent ID: 6285567
Filing Date: 2001-09-04
Classification: H02M

Abstract:
An apparatus for utilizing inductive leakage energy in a power supply, said apparatus comprising:a direct current (DC) input voltage source;a transformer having a primary side and a secondary side, the primary side having a primary winding and a primary reference point, the secondary side having a secondary winding and a secondary reference point, the transformer exhibiting leakage inductance characteristics;a switch coupling the DC input voltage source to the transformer primary winding, the switch alternately connecting the DC input voltage source to the transformer primary winding when the switch is closed and disconnecting the DC input voltage source from the transformer primary winding when the switch is open, the transformer acquiring an inductive leakage energy when the switch is closed and releasing the inductive leakage energy when the switch is open;a rectifier in communication with the transformer primary side for directing the inductive leakage energy out of the transformer when the switch is open; anda capacitor in communication with the rectifier for receiving, storing, and releasing the inductive leakage energy obtained from the transformer through the rectifier such that the capacitor establishes an average energy source, the rectifier and the capacitor defining a RC circuit.