High-power IGBTs (Insulated Gate Bipolar Transistors) or MOSFETs arranged in a full or half-bridge configuration. High-Frequency Transformer:
Repairing or building an inverter welder is hazardous due to the high voltages and stored energy involved. Tig Welder Inverter Schematic
Circuitry to allow external variable current control during the welding process. Critical Safety Precautions Tig Welder Inverter Schematic
High-speed recovery diodes and an output inductor (choke) to stabilize the arc. Control & Pulse-Width Modulation (PWM): Tig Welder Inverter Schematic
The heart of the machine that "chops" the DC into high-frequency AC (often between 20kHz and 100kHz).
Bridge rectifiers and large electrolytic filter capacitors to smooth the DC ripple. Inverter Bridge (The "Switching" Stage):
Converts incoming AC mains (110V/220V) into high-voltage DC.