Drain Output Resistance Calculator

✖Electron Mean Free Path which represents the average distance an electron can travel without scattering with impurities, defeat, or other obstacles within the solid state device.ⓘ Electron Mean Free Path [λ]			+10% -10%
✖Drain current is the current that flows between the drain and the source terminals of a field-effect transistor (FET), which is a type of transistor commonly used in electronic circuits.ⓘ Drain Current [i_d]			+10% -10%

✖Output resistance refers to the resistance of an electronic circuit to the flow of current when a load is connected to its output.ⓘ Drain Output Resistance [R_out]

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Formula

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Drain Output Resistance

Formula

`"R"_{"out"} = 1/("λ"*"i"_{"d"})`

Example

`"4.496403kΩ"=1/("2.78"*"0.08mA")`

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Drain Output Resistance Solution

STEP 0: Pre-Calculation Summary

Formula Used

Output Resistance = 1/(Electron Mean Free Path*Drain Current)
R_out = 1/(λ*i_d)
This formula uses 3 Variables

Variables Used

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.
Electron Mean Free Path - Electron Mean Free Path which represents the average distance an electron can travel without scattering with impurities, defeat, or other obstacles within the solid state device.
Drain Current - (Measured in Ampere) - Drain current is the current that flows between the drain and the source terminals of a field-effect transistor (FET), which is a type of transistor commonly used in electronic circuits.

STEP 1: Convert Input(s) to Base Unit

Electron Mean Free Path: 2.78 --> No Conversion Required
Drain Current: 0.08 Milliampere --> 8E-05 Ampere (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_out = 1/(λ*i_d) --> 1/(2.78*8E-05)

Evaluating ... ...

R_out = 4496.40287769784

STEP 3: Convert Result to Output's Unit

4496.40287769784 Ohm -->4.49640287769784 Kilohm (Check conversion here)

FINAL ANSWER

4.49640287769784 ≈ 4.496403 Kilohm <-- Output Resistance

(Calculation completed in 00.004 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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< 14 Resistance Calculators

MOSFET as Linear Resistance given Aspect Ratio

Go Linear Resistance = Channel Length/(Mobility of Electrons at Surface of Channel*Oxide Capacitance*Channel Width*Effective Voltage)

Output Resistance of Differential Amplifier

Go Output Resistance = ((Common Mode Input Signal*Transconductance)-Total Current)/(2*Transconductance*Total Current)

Input Resistance of Mosfet

Go Input Resistance = Input Voltage/(Collector Current*Small Signal Current Gain)

Finite Resistance between Drain and Source

Go Finite Resistance = modulus(Positive DC Voltage)/Drain Current

Output Resistance given Channel Length Modulation

Go Output Resistance = 1/(Channel Length Modulation*Drain Current)

Input Resistance given Transconductance

Go Input Resistance = Small Signal Current Gain/Transconductance

Electron Mean Free Path

Go Electron Mean Free Path = 1/(Output Resistance*Drain Current)

Drain Output Resistance

Go Output Resistance = 1/(Electron Mean Free Path*Drain Current)

Output Resistance given Transconductance

Go Output Resistance = 1/(Carrier Mobility*Transconductance)

Voltage Dependent Resistance in MOSFET

Go Finite Resistance = Effective Voltage/Drain Current

Output Resistance of Mosfet

Go Output Resistance = Early Voltage/Collector Current

Small Signal Input Resistance

Go Input Resistance = Input Voltage/Base Current

Conductance in Linear Resistance of MOSFET

Go Conductance of Channel = 1/Linear Resistance

MOSFET as Linear Resistance

Go Linear Resistance = 1/Conductance of Channel

Drain Output Resistance Formula

Output Resistance = 1/(Electron Mean Free Path*Drain Current)
R_out = 1/(λ*i_d)

What is the use of transconductance in MOSFET?

Transconductance is an expression of the performance of a bipolar transistor or field-effect transistor (FET). In general, the larger the transconductance figure for a device, the greater the gain(amplification) it is capable of delivering, when all other factors are held constant.

How to Calculate Drain Output Resistance?

Drain Output Resistance calculator uses Output Resistance = 1/(Electron Mean Free Path*Drain Current) to calculate the Output Resistance, Drain Output Resistance is defined to find the “extra” drain current which arises due to channel length modulation as the current flowing through a drain output resistor. Output Resistance is denoted by R_out symbol.

How to calculate Drain Output Resistance using this online calculator? To use this online calculator for Drain Output Resistance, enter Electron Mean Free Path (λ) & Drain Current (i_d) and hit the calculate button. Here is how the Drain Output Resistance calculation can be explained with given input values -> 0.004496 = 1/(2.78*8E-05).

FAQ

What is Drain Output Resistance?

Drain Output Resistance is defined to find the “extra” drain current which arises due to channel length modulation as the current flowing through a drain output resistor and is represented as R_out = 1/(λ*i_d) or Output Resistance = 1/(Electron Mean Free Path*Drain Current). Electron Mean Free Path which represents the average distance an electron can travel without scattering with impurities, defeat, or other obstacles within the solid state device & Drain current is the current that flows between the drain and the source terminals of a field-effect transistor (FET), which is a type of transistor commonly used in electronic circuits.

How to calculate Drain Output Resistance?

Drain Output Resistance is defined to find the “extra” drain current which arises due to channel length modulation as the current flowing through a drain output resistor is calculated using Output Resistance = 1/(Electron Mean Free Path*Drain Current). To calculate Drain Output Resistance, you need Electron Mean Free Path (λ) & Drain Current (i_d). With our tool, you need to enter the respective value for Electron Mean Free Path & Drain Current 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 Output Resistance?

In this formula, Output Resistance uses Electron Mean Free Path & Drain Current. We can use 4 other way(s) to calculate the same, which is/are as follows -

Output Resistance = ((Common Mode Input Signal*Transconductance)-Total Current)/(2*Transconductance*Total Current)
Output Resistance = Early Voltage/Collector Current
Output Resistance = 1/(Carrier Mobility*Transconductance)
Output Resistance = 1/(Channel Length Modulation*Drain Current)

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