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Contact SupplierAC Line voltage is taken as the input to the welding equipment
It is suitably RFIEMI filtered and rectified
This rectified voltage is filtered to make it pure DC
This DC voltage is taken as the input to the switching device through a high frequency power transformer
As this switching frequency is very high the size of this transformer becomes very small compared to its counter parts
The transformer output is suitably stepped down
This stepped down AC voltage is again rectified using fast recovery diodes
This output is used for welding
Suitable controls and feedback techniques are used