Enter the full load voltage (volts) and the load regulation (%) into the calculator to determine the No Load Voltage. 

No Load Voltage Formula

The following formula is used to calculate the No Load Voltage. 

Vn = Vf + (Vf*LR/100)

  • Where Vn is the No Load Voltage (volts)
  • Vf is the full load voltage (volts) 
  • LR is the load regulation (%) 

How to Calculate No Load Voltage?

The following two example problems outline how to calculate the No Load Voltage.

Example Problem #1:

  1. First, determine the full load voltage (volts). In this example, the full load voltage (volts) is measured to be 400.
  2. Next, determine the load regulation (%). For this problem, the load regulation (%) is calculated to be 15.
  3. Finally, calculate the No Load Voltage using the formula above: 

Vn = Vf + (Vf*LR/100)

Inserting the values from above and solving the equation with the imputed values gives: 

Vn = 400 + (400*15/100) = 460 (volts)


Example Problem #2: 

Using the same process as example problem 1, we first define the variables outlined by the formula. In this case, the values are:

full load voltage (volts) = 300

load regulation (%) = 16

Entering these values into the formula above gives : 

Vn = 300+ (300*16/100) = 348 (volts)