Patent ID: 7450403
Filing Date: 2008-11-11
Classification: G06F,H01F,H01R,H02J,H02M,H05K,Y02B

Abstract:
1. A power supply comprising: a terminal for receiving a DC voltage; a transformer having a primary winding and a secondary winding; a switching circuit coupled between the terminal and the primary winding for providing alternating current to the primary winding; a rectifier circuit coupled to the secondary winding to provide a DC output voltage; a controller circuit for controlling the switching circuit to modulate the alternating current provided to the primary winding; and a circuit which generates an output signal having a magnitude which is a function of the DC output voltage and a selected position of a switch, the switch being operable to selectively couple a component, from among a plurality of components, to an input of the circuit, and the output signal being provided as a feedback signal to the controller circuit to control a magnitude of the DC output voltage.