yeswelder tig-250p 250 amp ac/dc aluminum tig welder with pulse, digital inverter tig/stick 220v welding machine yeswelder the tig250p ac/dc tig welder with pulse features the versatility to suit the needs of hobbyists and professional welders, especially for welding aluminum with ac tig and pulsed ac tig modes. it produces high performance with an array of pulse features, includes 250 amps of alternating current( a start amp 5 to 250) or direct current tig welding along with stick function, comes with wp-26 heavy-duty tig torch. it features a high-quality foot pedal to control the amp up/down and power on/off). features: digital indicator display amperage for viewing of the actual and preset values for greater accuracy and repeatability in your welding procedure. pulse frequency control,pulse width/frequency (0.5hz-200hz) pre-flow and post-flow time control (0.1s-10s) up/down-slope time control (0.1s-15s), fine control of current reversal crater/start/pulse current control(5a-250a for mma, 10a-160a for tig ) self-adjustable arc force current: for good operation while under long-distance welding. multiple welding processes equipped with ac square wave tig, ac pulse tig, dc tig, dc pulse tig, dc flux-coated electrodes mma, and argon arc spot welding (dc, pulse or ac). hf arc starts built-in pressurized arc ignition circuit; also applicable to tig no-hf arc ignition. squarewave is the best option to improve your weld quality and make aluminum welding easier. capable of 2t/4t/spot welding to meet various welding process demands. mma hot start, easy arc start, stable current, minimum spatter, no sticking, good shaping, and self-adaption to different cable length and cross-section.