Multi-supply-voltage inverter type manual electric arc welder

• Main Authors: JIANG HEPING, ZHU XUANHUI, WEI JIKUN
• Format: Patent
• Language: Chinese; English
• Published: 31.12.2021
• 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 invention relates to a multi-supply-voltage inverter type manual electric arc welder. A power supply of the welder is single-phase 200V-240V or 380V-400V and 50/60Hz, and an input supply voltage detection and conversion control circuit is adopted to detect the input voltage of the welder and complete the automatic identification of the input voltage and the control of voltage-multiplying conversion, so that the reliability of the voltage-multiplying conversion and the control circuit of the voltage-multiplying conversion is improved, and the welder can be used for welding operation under various power grid conditions at home and abroad. By means of the novel welder control circuit, the problems of welder power-on buffering, automatic identification of the input voltage and voltage-multiplying conversion control, and reliability of an inverter main circuit and a switching power supply circuit are well solved. The control technology and method adopted by the welder have unique characteristics. 本发明涉及一种多电源电压的