Manual welding machine is straightened to contrary friendship of numerical control

The utility model discloses a manual welding machine is straightened to contrary friendship of numerical control, including main circuit, control circuit, drive circuit detection circuitry and switch, control circuit includes chip U1, chip U1's pin Q0 connects resistance R4's one end, and triode Q1's collecting electrode is connected to resistance R4's the other end, triode Q1's emitter ground, and electrical apparatus J1's one end, diode D1's one end and emitting diode LED1's one end, another termination resistance R5's of emitting diode LED1 one end is succeeded to triode Q1's base. Through set up in control circuit the CD4017 chip and with CD4066 chip and two 555 chips that the CD4017 chip is connected, guarantee like this that its output in the course of the work is big, the energy consumption is little, can adapt to the input of different alternating currents, accommodation is wide, its working property is stable simultaneously.