1 5M foot switch for this spot welding machine id 1747573this kind of controller has a very large instantaneous welding current 100 to 200a and the heat inside the mos tube is also very large therefore when testing the machine the welding energy should start from the minimum and the welding can be guaranteed don t set too large the most important thing is to pay attention to the range of the power supply and the thickness of the welded nickel strip if the nickel band is too thick the tube will burn easily notice please read the instructions in the package carefully we donot provide extra technical support for it please make sure you know how to config it before purchasing features 1 wide selection of welding power supply lithium battery power supply or 12v car battery 2 the controller is controlled by a single chip microcomputer and the output pulse is accurate to ensure the welding quality 3 with lcd display screen can display welding parameters 4 the welding pen and the input line are connected by u shaped cold pressed terminals which is convenient for disassembly and replacement 5 using automatic touch welding mode while retaining the manual trigger interface you can choose according to your own use 6 the board uses 2 gusi copper to increase the overcurrent capacity 7 using 5 300a mos tubes non disassembled mos tubes 8 the mos tube driver adopts the imported special chip driver the fastest mos tube can be hit with 20ns the switch is fast to pr
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