Miller PC-300 is a Pulser Control that can be used with different welding power sources to provide variable pulsed weld output primarily for the Gas Tungsten Arc Welding - Pulsed Arc (GTAW-P) process. It helps control peak amperage, background amperage, pulses per second, % On Time and whether the output and pulser are on. Variable pulse control can be used for reduced heat input, decreased distortion and increased travel speeds when welding thin materials.