Explain How an Alternating Welding Current Can Be Converted to a Direct

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The Answer is Alternating welding current can be converted to direct current by using a series of rectifiers. A rectifier allows current to flow in one direction only. If one rectifier is added, it would be difficult to weld. A series of rectifiers, known as a bridge rectifier, can modify the alternating current. Rectifiers become hot as they change AC to DC. They must be attached to a heat sink and cooled by having air blown over them. The heat produced by a rectifier reduces the power efficiency of the welding machine. At the same dial settings for AC and DC, the DC is at a lower amperage. The difference in amperage (power) is due to heat lost in the rectifiers. The loss in power makes operation with AC more efficient and less expensive compared to DC.

Explain How an Alternating Welding Current Can Be Converted to a Direct

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