Patent ID: 6474330
Filing Date: 2002-11-05
Classification: C25B,F23C,F23D,F23L,F24B,F24C,Y02E

Abstract:
A self-contained power module comprising an enclosure having input and output connectors for providing an electrical interface between an exterior and interior of the enclosure, said module comprising:a first full-wave rectifier having an input connected to the input connector of the enclosure, and an output, a chopper having an input connected to the first full-wave rectifier output, and a chopped output having a variable duty cycle, a transformer having a primary winding coupled to the chopped output, and a secondary winding; a second full-wave rectifier having an input coupled to the secondary winding ofthe transformer, and an output connected to the output connector of the enclosure such that a rectified sinusoidal waveform appears at the output connector when an AC voltage is applied to the input connector; and a controller for regulating the duty cycle of the chopped output as a function of the AC voltage.