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## Voltage gain of the common-drain amplifier Solution

STEP 0: Pre-Calculation Summary
Formula Used
voltage_gain = Input resistance/(Load resistance+1/MOSFET Transconductance)
Av = Ri/(Rl+1/gm)
This formula uses 3 Variables
Variables Used
Input resistance - Input resistance is the resistance value of the voltage amplifier (Measured in Ohm)
Load resistance - Load resistance is the resistance value of load given for the network (Measured in Kilohm)
MOSFET Transconductance - MOSFET Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage. (Measured in Microsiemens)
STEP 1: Convert Input(s) to Base Unit
Input resistance: 100000 Ohm --> 100000 Ohm No Conversion Required
Load resistance: 1 Kilohm --> 1000 Ohm (Check conversion here)
MOSFET Transconductance: 0.25 Microsiemens --> 2.5E-07 Siemens (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Av = Ri/(Rl+1/gm) --> 100000/(1000+1/2.5E-07)
Evaluating ... ...
Av = 0.0249937515621095
STEP 3: Convert Result to Output's Unit
0.0249937515621095 Decibel --> No Conversion Required
0.0249937515621095 Decibel <-- voltage gain
(Calculation completed in 00.016 seconds)

## < 10+ Common-Gate (CG) and the Common-Base (CB) Amplifiers Calculators

Overall voltage gain of the amplifier when load resistance is connected to the output
overall_voltage_gain = Common-base current gain.*(1/Total resistance in the emitter+1/Load resistance)/(Signal Resistance+Emitter Resistance) Go
Overall voltage gain of the amplifier
Overall voltage gain of the source follower
Output voltage in terms of the transconductance
output_voltage = -(MOSFET Transconductance*Load Resistance*Finite input voltage) Go
Voltage gain of the buffer amplifier
Voltage gain of the common-drain amplifier
voltage_gain = Input resistance/(Load resistance+1/MOSFET Transconductance) Go
Voltage gain of the CS amplifier
voltage_gain_amplifier = MOSFET Transconductance*Load resistance of MOSFET Go
Input resistance of the common-collector amplifier
resistance_input = Input voltage/Signal current in the base Go
Output resistance of the common-drain amplifier
resistance_output = 1/MOSFET Transconductance Go
Input resistance of the MOSFETs transconductance
resistance_input = 1/MOSFET Transconductance Go

### Voltage gain of the common-drain amplifier Formula

voltage_gain = Input resistance/(Load resistance+1/MOSFET Transconductance)
Av = Ri/(Rl+1/gm)

## What is common drain amplifier?

A common-drain amplifier is one in which the input signal is applied to the gate and the output is taken from the source, making the drain common to both. Because it is common, there is no need for a drain resistor. A common-drain amplifier is shown below. A common-drain amplifier is also called a source-follower.

## How to Calculate Voltage gain of the common-drain amplifier?

Voltage gain of the common-drain amplifier calculator uses voltage_gain = Input resistance/(Load resistance+1/MOSFET Transconductance) to calculate the voltage gain, The voltage gain of the common-drain amplifier formula is defined as the amount of voltage that an electronic device needs in order to power on and function. voltage gain and is denoted by Av symbol.

How to calculate Voltage gain of the common-drain amplifier using this online calculator? To use this online calculator for Voltage gain of the common-drain amplifier, enter Input resistance (Ri), Load resistance (Rl) and MOSFET Transconductance (gm) and hit the calculate button. Here is how the Voltage gain of the common-drain amplifier calculation can be explained with given input values -> 0.024994 = 100000/(1000+1/2.5E-07).

### FAQ

What is Voltage gain of the common-drain amplifier?
The voltage gain of the common-drain amplifier formula is defined as the amount of voltage that an electronic device needs in order to power on and function and is represented as Av = Ri/(Rl+1/gm) or voltage_gain = Input resistance/(Load resistance+1/MOSFET Transconductance). Input resistance is the resistance value of the voltage amplifier, Load resistance is the resistance value of load given for the network and MOSFET Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage.
How to calculate Voltage gain of the common-drain amplifier?
The voltage gain of the common-drain amplifier formula is defined as the amount of voltage that an electronic device needs in order to power on and function is calculated using voltage_gain = Input resistance/(Load resistance+1/MOSFET Transconductance). To calculate Voltage gain of the common-drain amplifier, you need Input resistance (Ri), Load resistance (Rl) and MOSFET Transconductance (gm). With our tool, you need to enter the respective value for Input resistance, Load resistance and MOSFET Transconductance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate voltage gain?
In this formula, voltage gain uses Input resistance, Load resistance and MOSFET Transconductance. We can use 10 other way(s) to calculate the same, which is/are as follows -
• resistance_input = 1/MOSFET Transconductance
• voltage_gain_amplifier = MOSFET Transconductance*Load resistance of MOSFET
• overall_voltage_gain = Common-base current gain.*(1/Total resistance in the emitter+1/Load resistance)/(Signal Resistance+Emitter Resistance)
• output_voltage = -(MOSFET Transconductance*Load Resistance*Finite input voltage)
• voltage_gain = Input resistance/(Load resistance+1/MOSFET Transconductance)
• resistance_output = 1/MOSFET Transconductance