Patent ID: 6760233
Filing Date: 2004-07-06
Classification: H02M

Abstract:
An electrical circuit arrangement for producing a low-power rectified low voltage from an AC voltage, comprising:a first circuit block and a second circuit block wherein the first circuit block includes: a rectifier that is configured to provide a rectified voltage from a line voltage, a voltage limiter circuit that is configured to provide an intermediate voltage from the rectified voltage that is limited to a voltage level that is substantially less than the line voltage, and a bus capacitor that receives the intermediate voltage and couples the intermediate voltage to an input of the second circuit block; and the second circuit block includes: a half-bridge circuit that receives the intermediate voltage and provides an alternating voltage, a primary circuit that receives the alternating voltage, and a secondary circuit, operably coupled to the primary circuit, that includes at least one output diode that provides the low-power rectified low voltage.