What does inductance control in a welding power source?

What does inductance control in a welding power source?

• A. Arc on time (rate of rise and fall of amperage)
• B. Voltage amplitude
• C. Duty cycle of the machine
• D. Torch angle during welding

Answer: (A)

Inductance in a welding power source controls how quickly the welding current can change in the arc circuit. It acts like a damper in series with the arc, storing energy in a magnetic field and opposing sudden changes in current. Because of this, higher inductance slows the rate of current rise when you strike or start the weld and also smooths the current during transfer events. This directly shapes the arc on time—the rate of rise and fall of amperage—which affects arc stability, spatter, and how the weld pool behaves. It doesn’t set the voltage amplitude, duty cycle, or torch angle, which are determined by other settings or technique.

Inductance in a welding power source controls how quickly the welding current can change in the arc circuit. It acts like a damper in series with the arc, storing energy in a magnetic field and opposing sudden changes in current. Because of this, higher inductance slows the rate of current rise when you strike or start the weld and also smooths the current during transfer events. This directly shapes the arc on time—the rate of rise and fall of amperage—which affects arc stability, spatter, and how the weld pool behaves. It doesn’t set the voltage amplitude, duty cycle, or torch angle, which are determined by other settings or technique.