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INTRODUCTION TO REISTANCE SOLDERING Definition re•sist•ance sol•der•ing- a method of soldering where the heat to melt solder is instantaneously generated by passing an electrical current through a resistive material. Core Requirements Power Unit & Footswitch The foundation of a resistance soldering system; produces and controls an ample supply of safe high amperage, low voltage current. Handpiece Completes an electrical circuit carrying the current from the source, through the pieces being soldered and back. Electrodes Generates an instant and intense level of thermal output as current is forced through its highly resistive material. 4