Method and apparatus for receiving a universal input voltage...

Details Method and apparatus for receiving a universal input voltage... Method and apparatus for receiving a universal input voltage...

B - Operations, Transporting

23

K

B23K 31/02 (2006.01) B23K 9/10 (2006.01) B23K 13/08 (2006.01) H02M 1/00 (2006.01)

Patent

CA 2342039

A method and apparatus for providing welding type power is disclosed. The power source is capable of receiving any input voltage over a wide range of input voltages and includes an input rectifier that rectifies the ac input into a dc signal. A dc voltage stage converts the dc signal to a desired dc voltage and an inverter inverts the dc signal into a second ac signal. An output transformer receives the second ac signal and provides a third ac signal that has a current magnitude suitable for welding, cutting or induction heating. The welding type current may be rectified and smoothed by an output inductor and an output rectifier. A controller provides control signals to the inverter and a controller power supply can also receive a range of input voltages and provide a control power signal to the controller, and a voltage independent of the input voltage.

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