What are the advantages of using inverter technology in arc welding machines?
Rectifier changes AC to DC, High-speed switch (inverter) converts DC to high frequency AC, Transformer brings to a lower voltage and “isolate the output from the utility line” (transformer is small due to the incoming high frequency AC power), solid state rectifier converts back to DC, filtered smooth DC characteristic. Advantages of using an inverter power supply are: smaller, more compact than other power sources make it more accessible, especially during field work. Precise control of current allows for better control of varying welding processes and is more easily manipulated to give required output characteristics (pulsing and waveform manipulation). [Modern Welding Technology] The curves of group “a” have lower voltages than the curves in group “b” because the electrode used in group “a” is Thoirated Tungsten, which operates below the melting point (ie, the electrode tip will not melt and become spherical like with a pure Tungsten electrode, which tends to cause the cathode spot
