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Power Gain of Amplifier Formula

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Power Gain is a measure of the ability of an amplifier to increase the power or amplitude of a signal from the input to the output port. Check FAQs

A p = \frac{P L}{P in}

A_p - Power Gain?P_L - Load Power?P_in - Input Power?

Power Gain of Amplifier Example

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Here is how the Power Gain of Amplifier equation looks like with Values.

Here is how the Power Gain of Amplifier equation looks like with Units.

Here is how the Power Gain of Amplifier equation looks like.

0.8833 = \frac{7.95}{9}

0.8833 = \frac{7.95W}{9W}

0.8833 = \frac{7.95}{9}

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Power Gain of Amplifier Solution

Follow our step by step solution on how to calculate Power Gain of Amplifier?

FIRST Step Consider the formula

A p = \frac{P L}{P in}

Next Step Substitute values of Variables

∴

A p = \frac{7.95W}{9W}

Next Step Prepare to Evaluate

∴

A p = \frac{7.95}{9}

Next Step Evaluate

∴

A p = 0.883333333333333

LAST Step Rounding Answer

∴

A p = 0.8833

Power Gain of Amplifier Formula Elements

Variables

Power Gain

Power Gain is a measure of the ability of an amplifier to increase the power or amplitude of a signal from the input to the output port.

Symbol: A_p

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Power Gain

Load Power

Load Power is the power delivered to load in the circuit.

Symbol: P_L

Measurement: PowerUnit: W

Note: Value should be greater than 0.

Formulas to find Load Power

Input Power

Input Power is defined as the power supplied to the transistor circuit at the supply terminal by the source.

Symbol: P_in

Measurement: PowerUnit: W

Note: Value should be greater than 0.

Formulas to find Input Power

Other formulas in Amplifier Characteristics category

Go Current Gain of Amplifier

A i = \frac{I o}{i in}

Go Base Junction Width of Amplifier

w b = \frac{A be \cdot [Charge-e] \cdot D n \cdot n po}{i sat}

Go Differential Voltage in Amplifier

V id = \frac{V o}{(\frac{R 4}{R 3}) \cdot (1 + \frac{R 2}{R 1})}

Go Current Gain of Amplifier in Decibels

A i(dB) = 20 \cdot (\log 10 (A i))

How to Evaluate Power Gain of Amplifier?

Power Gain of Amplifier evaluator uses Power Gain = Load Power/Input Power to evaluate the Power Gain, The Power Gain of Amplifier formula is defined as the load power P(l) to the input power P(i), an amplifier provides the load with a power greater than that obtained from the signal source. Power Gain is denoted by A_p symbol.

How to evaluate Power Gain of Amplifier using this online evaluator? To use this online evaluator for Power Gain of Amplifier, enter Load Power (P_L) & Input Power (P_in) and hit the calculate button.

FAQs on Power Gain of Amplifier

What is the formula to find Power Gain of Amplifier?

The formula of Power Gain of Amplifier is expressed as Power Gain = Load Power/Input Power. Here is an example- 0.883333 = 7.95/9.

How to calculate Power Gain of Amplifier?

With Load Power (P_L) & Input Power (P_in) we can find Power Gain of Amplifier using the formula - Power Gain = Load Power/Input Power.

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