product information  1. Energy storage type spot welding machine control board, pulse can be adjusted, welding voltage can be adjusted, trigger time can be adjusted, welding interval time can also be adjusted  2. Support 2.5-3 volts, two strings of multi-parallel farad capacitors, 100-3000F farad capacitors, the control board comes with a step-down cross-current circuit, as long as the input 12V-19V, 12V 6A-10A adapter can be used     Product wiring  The 3P interface in the upper right corner: is the MOS board (3 pin line) connected to the spot welder, and is the most important part of the spot welder  The DC interface in the upper left corner: is the charging interface for the spot welder, a 12V 5-10A adapter is recommended  The 2P interface in the lower left corner: is the interface for connecting the foot pedal control, which is manually triggered Shipping list:  2P connection line*1  3P connection line*1  Control board (including LED) *1