About this document
Harbor Freight TIG Welder Schematic by speedyedu is a document available to read on EtoBox.
The document is a schematic diagram for a TIG welder. It shows the main circuitry including a PWM controller board that regulates current using IGBT transistors driven by PWM signals. It also has circuits for electrode voltage sensing, overcurrent protection, soft starting, and selecting between heat and weld modes using front panel switches. Power is supplied by 240VAC which is full wave rectified and filtered before being regulated by the PWM controller board.
- Author
- speedyedu
- Language
- EN