Patent ID: 7362599

Claim:
A power supply, which comprises: a single capacitor directly coupled to an alternating current (ac) input signal without another capacitor coupled therebetween, the ac input signal comprising any ac input voltage selected from a range of ac input voltages spanning at least 300Vac; a bridge rectifier, the bridge rectifier being operatively coupled through the capacitor to the ac input signal, the bridge rectifier outputting a rectified signal, the rectified signal providing power to a load; a switching device, the switching device being electrically coupled in parallel with the bridge rectifier; and a controller, the controller being responsive to the rectified signal, the controller selectively controlling the switching device to divert at least a portion of the rectified signal through the switching device and away from the load in response to the rectified signal, thereby providing at least one of a regulated voltage across the load and a regulated current through the load, the power supply being adapted to operate without an inductive component.