MOSWELD is the ultimate solid state power supply using MOSFET transistor technology
The circuit topology is current-fed inverter (CFI) with an inductance located between the DC and the HF stage, thus the inverter is naturally protected against load short circuit. The output circuit is a parallel resonance type: load and
inverter impedances are naturally matched, then no output transformer is required and therefore overall efficiency increases. Typical layout includes one power supply cabinet containing transformer, DC inductance, SCRs bridge and auxiliary circuits; a second cabinet is the welding head where the mosfet modules, capacitors and bus-bar are contained.
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