Tig Welder Inverter Schematic May 2026
The heart of the machine that "chops" the DC into high-frequency AC (often between 20kHz and 100kHz).
Circuitry to allow external variable current control during the welding process. Critical Safety Precautions
Steps down the high-voltage, high-frequency AC to a lower welding voltage while dramatically increasing the current.
The HF start circuit produces several thousand volts. This can damage sensitive electronics (like smartphones) or interfere with medical devices like pacemakers.
Bridge rectifiers and large electrolytic filter capacitors to smooth the DC ripple. Inverter Bridge (The "Switching" Stage):