High-power IGBTs (Insulated Gate Bipolar Transistors) or MOSFETs arranged in a full or half-bridge configuration. High-Frequency Transformer:
The heart of the machine that "chops" the DC into high-frequency AC (often between 20kHz and 100kHz). Tig Welder Inverter Schematic
An inverter TIG (Tungsten Inert Gas) welder schematic is a complex system of power electronics that converts standard mains electricity into a highly controlled, high-frequency current suitable for precision welding. A typical TIG inverter schematic is divided into
A typical TIG inverter schematic is divided into several interconnected functional blocks: They can hold lethal charges for long periods
A logic-controlled valve that manages shielding gas (usually Argon) flow before, during, and after the weld (pre-flow and post-flow).
PWM controller ICs (like the TL494 or UC3846), feedback sensors (shunts or Hall-effect sensors), and drive circuits. TIG-Specific Features
Always disconnect power and manually discharge large filter capacitors before touching the circuit. They can hold lethal charges for long periods after the machine is unplugged.