Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance Solution

STEP 0: Pre-Calculation Summary
Formula Used
Transconductance = Total Current/(Common Mode Input Signal-(2*Total Current*Output Resistance))
gm = It/(Vcin-(2*It*Rout))
This formula uses 4 Variables
Variables Used
Transconductance - (Measured in Siemens) - Transconductance is defined as the ratio of the change in the output current to the change in the input voltage, with the gate-source voltage held constant.
Total Current - (Measured in Ampere) - Total current is a term used in electrical engineering and physics to refer to the sum of all the electric currents flowing through a particular point in a circuit or conductor.
Common Mode Input Signal - (Measured in Volt) - A common mode input signal is a type of electrical signal that appears equally on both input terminals of a differential amplifier.
Output Resistance - (Measured in Ohm) - Output resistance refers to the resistance of an electronic circuit to the flow of current when a load is connected to its output.
STEP 1: Convert Input(s) to Base Unit
Total Current: 7.7 Milliampere --> 0.0077 Ampere (Check conversion ​here)
Common Mode Input Signal: 84.7 Volt --> 84.7 Volt No Conversion Required
Output Resistance: 4.5 Kilohm --> 4500 Ohm (Check conversion ​here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
gm = It/(Vcin-(2*It*Rout)) --> 0.0077/(84.7-(2*0.0077*4500))
Evaluating ... ...
gm = 0.0005
STEP 3: Convert Result to Output's Unit
0.0005 Siemens -->0.5 Millisiemens (Check conversion ​here)
0.5 Millisiemens <-- Transconductance
(Calculation completed in 00.004 seconds)
You are here -
Home »

Credits

Created by Payal Priya
Birsa Institute of Technology (BIT), Sindri
Payal Priya has created this Calculator and 600+ more calculators!
Verified by Urvi Rathod
Vishwakarma Government Engineering College (VGEC), Ahmedabad
Urvi Rathod has verified this Calculator and 1900+ more calculators!

<Voltage Calculators

Output Voltage at Drain Q1 of MOSFET given Common-Mode Signal
​ Go Drain Voltage Q1 = -Output Resistance*(Transconductance*Common Mode Input Signal)/(1+(2*Transconductance*Output Resistance))
Output Voltage at Drain Q2 of MOSFET given Common-Mode Signal
​ Go Drain Voltage Q2 = -(Output Resistance/((1/Transconductance)+2*Output Resistance))*Common Mode Input Signal
Output Voltage at Drain Q1 of MOSFET
​ Go Drain Voltage Q1 = -(Output Resistance*Total Current)
Output Voltage at Drain Q2 of MOSFET
​ Go Drain Voltage Q2 = -(Output Resistance*Total Current)

Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance Formula

Transconductance = Total Current/(Common Mode Input Signal-(2*Total Current*Output Resistance))
gm = It/(Vcin-(2*It*Rout))

How MOSFET acts as an amplifier?

A small change in gate voltage produces a large change in drain current as in JFET. This fact makes MOSFET capable of raising the strength of a weak signal; thus acting as an amplifier. During the positive half-cycle of the signal, the positive voltage on the gate increases and produces the enhancement-mode.

How to Calculate Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance?

Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance calculator uses Transconductance = Total Current/(Common Mode Input Signal-(2*Total Current*Output Resistance)) to calculate the Transconductance, The Overdrive voltage when MOSFET acts as amplifier with load resistance is the excess of the voltage of oxide over threshold voltage and is the quantity that determines the charge in the channel. Transconductance is denoted by gm symbol.

How to calculate Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance using this online calculator? To use this online calculator for Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance, enter Total Current (It), Common Mode Input Signal (Vcin) & Output Resistance (Rout) and hit the calculate button. Here is how the Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance calculation can be explained with given input values -> 500 = 0.0077/(84.7-(2*0.0077*4500)).

FAQ

What is Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance?
The Overdrive voltage when MOSFET acts as amplifier with load resistance is the excess of the voltage of oxide over threshold voltage and is the quantity that determines the charge in the channel and is represented as gm = It/(Vcin-(2*It*Rout)) or Transconductance = Total Current/(Common Mode Input Signal-(2*Total Current*Output Resistance)). Total current is a term used in electrical engineering and physics to refer to the sum of all the electric currents flowing through a particular point in a circuit or conductor, A common mode input signal is a type of electrical signal that appears equally on both input terminals of a differential amplifier & Output resistance refers to the resistance of an electronic circuit to the flow of current when a load is connected to its output.
How to calculate Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance?
The Overdrive voltage when MOSFET acts as amplifier with load resistance is the excess of the voltage of oxide over threshold voltage and is the quantity that determines the charge in the channel is calculated using Transconductance = Total Current/(Common Mode Input Signal-(2*Total Current*Output Resistance)). To calculate Overdrive Voltage when MOSFET Acts as Amplifier with Load Resistance, you need Total Current (It), Common Mode Input Signal (Vcin) & Output Resistance (Rout). With our tool, you need to enter the respective value for Total Current, Common Mode Input Signal & Output Resistance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
Let Others Know