Patent ID: 7235759
Filing Date: 2007-06-26
Classification: B23K,H02M,Y02P

Abstract:
1. A welding type power source capable of receiving a plurality of input voltages and frequencies, comprising: an input circuit configured to receive an input power signal having an input frequency and an input magnitude a preregulator configured to receive the first signal and provide a dc second signal having a preregulator magnitude independent of the input magnitude; an output circuit configured to receive the dc second signal and provide a welding type output power signal having an output frequency independent of the input frequency and having an output voltage independent of the input voltage; a preregulator controller, connected to the preregulator, having a power factor correction circuit, and further having a controller power input; and a control power circuit configured to receive the dc second signal and provide a control power signal to the controller power input, wherein the controller power signal has a control power magnitude independent of the input magnitude and a control frequency independent of the input frequency.