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

- All Electrical Calculators
- DB Gain Calculator
- Speaker Impedance Calculator
- Speaker Voltage Calculator

## 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

To calculate the amplifier voltage, multiply the input voltage by the amplifier gain.

## How to Calculate Amplifier Voltage?

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

**Example Problem #1:**

- First, determine the input/source voltage (volts). In this example, the input/source voltage (volts) is measured to be 45.
- Next, determine the amplifier gain. For this problem, the amplifier gain is calculated to be 4.
- 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)