Patent ID: 6430062
Filing Date: 2002-08-06
Classification: H02J,H02M,Y02B,Y04S

Abstract:
A power supply apparatus comprising: an apparatus input for connection to a commercial AC power source and an apparatus output for connection to a load, a transformer with an input coupled to the apparatus input for the supply of alternating current to the transformer input, a switching element coupled to the transformer input for switching the alternating current supplied to the transformer input, a first rectifying circuit coupled to the apparatus input by a capacitor, a control circuit coupled to the first rectifying circuit for generating intermittent pulses and to the switching element for causing switching of the alternating current supplied to the transformer in accordance with the pulses, a second rectifying circuit coupled to the transformer output and an electric charge storing element coupled to the apparatus output and the second rectifying circuit for storing electric charge when the switching element is operating.