Half-bridge inversion manual arc welding machine with multiple power supply voltages and multiple plates

• Main Authors: TIAN KUN, JIANG HEPING, CHEN QUAN, ZHU XUANHUI, WEI JIKUN
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2023
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The utility model relates to a multi-supply-voltage multi-board half-bridge inversion manual arc welding machine. A large electrolytic capacitor and a discharge resistor of the large electrolytic capacitor are designed on a circuit board; the factor that a circuit board is burnt out due to the fact that a high-power electronic switch IGBT is damaged is considered, the IGBT, a high-voltage side driving part and the like of the IGBT and the like are designed on one circuit board, an input power supply voltage detection and conversion control circuit is adopted, and the reliability of voltage-multiplying conversion and the reliability of a control circuit of the voltage-multiplying conversion are improved; a power-on buffer control circuit is adopted, a power switch is prevented from being burnt out, and the reliability of the welding machine is improved; a stable and reliable IGBT driving circuit is adopted, so that the reliability of driving work is guaranteed; a switching power supply circuit is adopted, so t