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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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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Home » Engineering » Electronics » MOSFET » Analog Electronics » Resistance » Drain Output Resistance

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!

< Resistance Calculators

MOSFET as Linear Resistance given Aspect Ratio

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

Finite Resistance between Drain and Source

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

Electron Mean Free Path

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

Drain Output Resistance

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

Drain Output Resistance Formula

LaTeX Go

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 3 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)

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