Voltage-sensing wire feeders adjust feed speed based on which parameter?

Voltage-sensing wire feeders adjust feed speed based on which parameter?

• A. Arc voltage
• B. Line voltage
• C. Drooping voltage curve
• D. Preset amperage

Answer: (A)

Voltage-sensing wire feeders regulate their wire feed speed by monitoring the actual arc voltage at the weld. The arc voltage reflects the arc length and welding conditions, so the feeder uses this feedback to keep the arc stable. When the arc length increases and voltage climbs, the feeder slows the wire feed to bring the voltage back toward the target. When the arc shortens and voltage drops, it speeds up the feed to raise the current and restore the voltage. This keeps the arc consistent and the bead formed predictably. Line voltage is just the supply to the machine, while a preset amperage is simply a fixed setting, not a feedback signal the feeder uses. The idea is to respond to arc voltage, not those other factors.

Voltage-sensing wire feeders regulate their wire feed speed by monitoring the actual arc voltage at the weld. The arc voltage reflects the arc length and welding conditions, so the feeder uses this feedback to keep the arc stable. When the arc length increases and voltage climbs, the feeder slows the wire feed to bring the voltage back toward the target. When the arc shortens and voltage drops, it speeds up the feed to raise the current and restore the voltage. This keeps the arc consistent and the bead formed predictably. Line voltage is just the supply to the machine, while a preset amperage is simply a fixed setting, not a feedback signal the feeder uses. The idea is to respond to arc voltage, not those other factors.