Voltage Regulation Calculator
Reg(%) = (VNL − VFL)/VFL × 100
Instructions
Measure or enter the no-load and full-load output voltages of a source or transformer and click Calculate.
Formula
Reg(%) = (VNL − VFL)/VFL × 100
Common Questions
Is lower regulation better?
Yes. Lower percentage indicates better voltage stability under load.
Can it be negative?
Rarely, with certain regulators VFL may exceed VNL, yielding negative regulation.