The invention relates to an
IGBT inverter multi-function
welding machine with
liquid crystal display and multi-input voice prompt functions. The power source of the
IGBT inverter multi-function
welding machine is 220-240V or 110V-120V; and the interior of the
IGBT inverter multi-function
welding machine is designed to be of a left-and-right side structure. Components such as a circuit board, a cooling fan and the like are arranged on one side of the interior of the IGBT
inverter multi-function welding machine; components such as a wire feeding mechanism and the like are arranged on the other side of the interior of the IGBT
inverter multi-function welding machine; the circuit board is designed into three pieces, one piece is a
liquid crystal display and operation control board, the secondpiece is a switching control board which can realize automatic identification, detection and conversion control of an input
voltage, and the third piece is a main control board; and the IGBT invertermulti-function welding machine is mainly composed of an
inverter main circuit consisting of input
voltage detection, power-on buffering, rectification and filtering, IGBT inverter, a main
transformer,output rectification, filtering and the like, a
switching power circuit, an inverter PWM and IGBT drive circuit, a wire feeding and
solenoid valve control circuit, an output characteristic
control circuit and the like. The IGBT inverter multi-function welding machine not only has a multi-function welding method, but also solves the problem of narrow application range of a multi-power-source and single-function welding machine.