Overall pulse welding machine

The utility model discloses an overall pulse welding machine, the main control board on the welding machine is electrically connected and has the pulse board, is connected with three controlling resistor in the circuit of the pulse board, the middle port of pulse board and the circuit of a low frequency filter line terminal also is connected with the diode, diode other end connecting resistance R3, resistance R3 other end connecting resistance R1, controlling resistor R5, controlling resistor R5 electricity connecting resistance R2, S3 port that resistance R1 was electrically connected at the main control board. The utility model discloses welding system quick response and reliability service are ensured to the welding machine, have adopted the pulse board, and duration's size appears in regulating impulse welding current, and pulse width is wide more, and the welding seam is wide relatively and dark, otherwise then narrow and shallow, has cut off the contact of control circuit and welding circuit electricity, realizes short circuit and overstrain protection to output among the welding process, reduces the withstand voltage grade of components and parts, has further improved the factor of safety of device.