Bridge rectifiers and large electrolytic filter capacitors to smooth the DC ripple. Inverter Bridge (The "Switching" Stage):
The HF start circuit produces several thousand volts. This can damage sensitive electronics (like smartphones) or interfere with medical devices like pacemakers. Tig Welder Inverter Schematic
PWM controller ICs (like the TL494 or UC3846), feedback sensors (shunts or Hall-effect sensors), and drive circuits. TIG-Specific Features feedback sensors (shunts or Hall-effect sensors)