Patent ID: 6987242

Claim:
A welding type power source capable of receiving a range of input voltages and frequencies, comprising: an input circuit configured to receive an input power signal having an input frequency and an input magnitude and provide a first signal having a magnitude responsive to the 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.