Systems and methods for efficient provision of arc welding power source

摘要: Methods and systems for creating controlling an AC output welding, plasma cutting or heating are provided. One embodiment of the present disclosure achieves a desired square wave reduces number circuit components needed by combining buck converter full bridge inverter. Current flow paths through power control that generated via switching transistors in on off In one embodiment, pulse width modulation leg, which controls level current inductor, is Certain embodiments include bidirectional converts unregulated DC to regulated inductor. steering leg provided, direction Additionally, clamp circuit, suppresses parasitic load inductance during polarity reversal