Welding power can be supplied as three typical types as below: ■ Constant voltage (CV)—The arc voltage remains constant at the selected setting even if the arc length and amperage increase or decrease. ■ Rising arc voltage (RAV)—The arc voltage increases as the amperage increases. ■ Constant current (CC)—The total welding current (watts) remains the same. This type of power is also called drooping arc voltage (DAV) because the arc voltage decreases as the amperage increases. The shielded metal arc welding (SMAW) process requires a constant current (CC) arc voltage characteristic, illustrated by the constant current line. The shielded metal arc … Continue reading Welding Power Types CC, CV, RAV