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Voltage Gain of FET Formula

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Voltage Gain FET is determined by the transconductance of the JFET and the load resistance. Check FAQs

A v(fet) = - G m(fet) \cdot R d(fet)

A_v(fet) - Voltage Gain FET?G_m(fet) - Forward Transconductance FET?R_d(fet) - Drain Resistance FET?

Voltage Gain of FET Example

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Here is how the Voltage Gain of FET equation looks like with Values.

Here is how the Voltage Gain of FET equation looks like with Units.

Here is how the Voltage Gain of FET equation looks like.

-0.0064 = - 0.02 \cdot 0.32

-0.0064V = - 0.02mS \cdot 0.32kΩ

-0.0064 = - 0.02 \cdot 0.32

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Voltage Gain of FET Solution

Follow our step by step solution on how to calculate Voltage Gain of FET?

FIRST Step Consider the formula

A v(fet) = - G m(fet) \cdot R d(fet)

Next Step Substitute values of Variables

∴

A v(fet) = - 0.02mS \cdot 0.32kΩ

Next Step Convert Units

∴

A v(fet) = - 2E-5S \cdot 320Ω

Next Step Prepare to Evaluate

∴

A v(fet) = - 2E-5 \cdot 320

LAST Step Evaluate

∴

A v(fet) = -0.0064V

Voltage Gain of FET Formula Elements

Variables

Voltage Gain FET

Voltage Gain FET is determined by the transconductance of the JFET and the load resistance.

Symbol: A_v(fet)

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Voltage Gain FET

Forward Transconductance FET

Forward Transconductance FET refers to the change in output current resulting from a change in input voltage, indicating the device's amplification capability.

Symbol: G_m(fet)

Measurement: Electric ConductanceUnit: mS

Note: Value should be greater than 0.

Formulas to find Forward Transconductance FET

Drain Resistance FET

Drain Resistance FET is the resistance offered by drain terminal to the drain current in a FET.

Symbol: R_d(fet)

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Formulas to find Drain Resistance FET

Other formulas in FET category

Go Pinch off Voltage of FET

V off(fet) = V ds-off(fet) - V ds(fet)

Go Drain Current of FET

I d(fet) = I dss(fet) \cdot {(1 - \frac{V ds(fet)}{V cut-off(fet)})}^{2}

Go Transconductance of FET

G m(fet) = \frac{2 \cdot I dss(fet)}{V off(fet)} \cdot (1 - \frac{V ds(fet)}{V off(fet)})

Go Drain Source Voltage of FET

V ds(fet) = V dd(fet) - I d(fet) \cdot (R d(fet) + R s(fet))

How to Evaluate Voltage Gain of FET?

Voltage Gain of FET evaluator uses Voltage Gain FET = -Forward Transconductance FET*Drain Resistance FET to evaluate the Voltage Gain FET, Voltage Gain of FET is determined by the transconductance of the FET and the load resistance. The transconductance of a FET is a measure of how much the drain current changes in response to a change in gate voltage. The load resistance is the resistance connected between the drain and the power supply voltage. Voltage Gain FET is denoted by A_v(fet) symbol.

How to evaluate Voltage Gain of FET using this online evaluator? To use this online evaluator for Voltage Gain of FET, enter Forward Transconductance FET (G_m(fet)) & Drain Resistance FET (R_d(fet)) and hit the calculate button.

FAQs on Voltage Gain of FET

What is the formula to find Voltage Gain of FET?

The formula of Voltage Gain of FET is expressed as Voltage Gain FET = -Forward Transconductance FET*Drain Resistance FET. Here is an example- -0.4352 = -2E-05*320.

How to calculate Voltage Gain of FET?

With Forward Transconductance FET (G_m(fet)) & Drain Resistance FET (R_d(fet)) we can find Voltage Gain of FET using the formula - Voltage Gain FET = -Forward Transconductance FET*Drain Resistance FET.

Can the Voltage Gain of FET be negative?

Yes, the Voltage Gain of FET, measured in Electric Potential can be negative.

Which unit is used to measure Voltage Gain of FET?

Voltage Gain of FET is usually measured using the Volt[V] for Electric Potential. Millivolt[V], Microvolt[V], Nanovolt[V] are the few other units in which Voltage Gain of FET can be measured.

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