Enter the input/source voltage (volts) and the amplifier gain into the calculator to determine the Amplifier Voltage. 

Amplifier Voltage Formula

The following formula is used to calculate the Amplifier Voltage. 

Va = Vi * G

  • Where Va is the Amplifier Voltage (volts)
  • Vi is the input/source voltage (volts) 
  • G is the amplifier gain 

How to Calculate Amplifier Voltage?

The following two example problems outline how to calculate the Amplifier Voltage.

Example Problem #1:

  1. First, determine the input/source voltage (volts). In this example, the input/source voltage (volts) is measured to be 45.
  2. Next, determine the amplifier gain. For this problem, the amplifier gain is calculated to be 4.
  3. Finally, calculate the Amplifier Voltage using the formula above: 

Va = Vi * G

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

Va = 45 * 4 = 180 (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:

input/source voltage (volts) = 50

amplifier gain = 2

Entering these values into the formula above gives : 

Va = 50 * 2 = 100 (volts)