Inverter v Rectifier

Inverter v Rectifier

Inverter technology has been proven in welding applications worldwide for more than 30 years.

The distinct advantage over rectifiers lies in the transformer circuitry.

A rectifier provides DC welding current, but its transformer is powered by 50-cycle mains electricity. So the welding arc’s stability is maintained by basic feedback that is monitored and adjusted only 50 times per second.

Inverter technology also uses a transformer, but with a more powerful circuit – starting with 50-cycle mains but ending at 20,000 cycles. Both output voltage and current are constantly fed back to a control system which adjusts drive to the switching transistors and stabilises the arc.

The inverter compensates for changes in both mains voltage and arc conditions – up to 20,000 times per second.

The result is a significantly more stable, smooth and controlled arc. As well, the inverter’s more efficient transformer dramatically reduces unit size and weight while increasing energy efficiency.

Key features

• smaller, lighter units that are easily portable and more practical on site

• smooth, stable arc reduces spatter for less cleaning time

• constant arc conditions deliver high-quality weld integrity

• controlled, regular output compensates for line voltage fluctuations

• increased efficiency, drawing less power from mains to reduce electricity costs