WE ARE ALREADY MANUFACTURING SINGLE PAHSE RESISTANCE WELDING MACHINE NOW WE WANT TO DEVELOPE 3 PHASE D.C. WELDING MACHINE DESIGNED OF TRANSFORMER, POWER CALCULATION ON PRIMARY SIDE AS WELL AS ON SECONDARY SIDE, SELECTION OF PRIMARY A.C. THYRISTOR SWITCH, OUT-PUT D.C. DIODE, CALCULATION OF DIFFERENT TYPE OF LOSSES FOR ALL TYPE OF RESISTANCE WELDING MACHINE. ADVANTAGE AND DIS-ADVANTAGE OF A.C. AND D.C. RESISTANCE WELDING MACHINE. POWER SAVING CALCULATION.

KINDLY INFORM US THE NAME OF AUTHOR WHO HAS WRITTEN BOOK ON RESISTANCE D.C. WELDING MACHINE FOR OUR READY REFERENCE.

PLS. REPLY AS EARLY AS POSSIBLE

-- Jatin Shah (electroweld@eth.net), March 16, 2003