【摘要】 介绍了一种主电路采用MOSFET和铁氧体磁芯构成单端正激的逆变式多功能焊机;设计了以PWM为核心的控制电路配以恒流内拐式外特性,从而保证了焊机具有良好的静、动特性。分析和实验结果表明:该焊机具有可靠性高,实际焊接效果好的特点。更多还原

【Abstract】 The inverter versatile arc welding machine is introduced.The structure of the main circuit is made up of MOSFET and ferrite magnetic core. The core of the control circuit which is PWM and the external characteristic of constant current with inward decent have been designed. As a result, the welding power source has good static and dynamic characteristics. The analytical and experimental results show that this inverter welding machine has high reliability and the welding effect is good. 更多还原