Finite Resistance between Drain and Source Calculator

✖Positive DC Voltage is voltage at the positive terminal of a DC voltage source is higher than that at the negative terminal, resulting in a flow of electric current in a specific direction.ⓘ Positive DC Voltage [V_a]			+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%

✖A finite resistance simply means that the resistance in a circuit is not infinite or zero. In other words, the circuit has some amount of resistance, which can affect the behavior of the circuit.ⓘ Finite Resistance between Drain and Source [R_fi]

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Formula

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Finite Resistance between Drain and Source

Formula

`"R"_{"fi"} = "modulus"("V"_{"a"})/"i"_{"d"}`

Example

`"0.06375kΩ"="modulus"("0.0051V")/"0.08mA"`

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Finite Resistance between Drain and Source Solution

STEP 0: Pre-Calculation Summary

Formula Used

Finite Resistance = modulus(Positive DC Voltage)/Drain Current
R_fi = modulus(V_a)/i_d
This formula uses 1 Functions, 3 Variables

Functions Used

modulus - Modulus of a number is the remainder when that number is divided by another number., modulus

Variables Used

Finite Resistance - (Measured in Ohm) - A finite resistance simply means that the resistance in a circuit is not infinite or zero. In other words, the circuit has some amount of resistance, which can affect the behavior of the circuit.
Positive DC Voltage - (Measured in Volt) - Positive DC Voltage is voltage at the positive terminal of a DC voltage source is higher than that at the negative terminal, resulting in a flow of electric current in a specific direction.
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

Positive DC Voltage: 0.0051 Volt --> 0.0051 Volt No Conversion Required
Drain Current: 0.08 Milliampere --> 8E-05 Ampere (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_fi = modulus(V_a)/i_d --> modulus(0.0051)/8E-05

Evaluating ... ...

R_fi = 63.75

STEP 3: Convert Result to Output's Unit

63.75 Ohm -->0.06375 Kilohm (Check conversion here)

FINAL ANSWER

0.06375 Kilohm <-- Finite 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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National Institute Of Technology (NIT), Hamirpur

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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

Finite Resistance between Drain and Source Formula

Finite Resistance = modulus(Positive DC Voltage)/Drain Current
R_fi = modulus(V_a)/i_d

What is drain current in MOSFET?

The drain current below threshold voltage is defined as the subthreshold current and varies exponentially with Vgs. The reciprocal of the slope of the log(Ids) vs. Vgs characteristic is defined as the subthreshold slope, S, and is one of the most critical performance metrics for MOSFETs in logic applications.

What is the range of finite resistance?

Typically finite resistance is of range 10kΩ to 1000kΩ.It is the most serious shortcoming of the small-signal model is that it assumes the drain current in saturation to be independent of the drain voltage whereas it also depends on finite resistance

How to Calculate Finite Resistance between Drain and Source?

Finite Resistance between Drain and Source calculator uses Finite Resistance = modulus(Positive DC Voltage)/Drain Current to calculate the Finite Resistance, The Finite resistance between drain and source is the opposition offered to the drain current in saturation. It is the ratio of a positive voltage to the drain current. Finite Resistance is denoted by R_fi symbol.

How to calculate Finite Resistance between Drain and Source using this online calculator? To use this online calculator for Finite Resistance between Drain and Source, enter Positive DC Voltage (V_a) & Drain Current (i_d) and hit the calculate button. Here is how the Finite Resistance between Drain and Source calculation can be explained with given input values -> 6.4E-5 = modulus(0.0051)/8E-05.

FAQ

What is Finite Resistance between Drain and Source?

The Finite resistance between drain and source is the opposition offered to the drain current in saturation. It is the ratio of a positive voltage to the drain current and is represented as R_fi = modulus(V_a)/i_d or Finite Resistance = modulus(Positive DC Voltage)/Drain Current. Positive DC Voltage is voltage at the positive terminal of a DC voltage source is higher than that at the negative terminal, resulting in a flow of electric current in a specific direction & 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 Finite Resistance between Drain and Source?

The Finite resistance between drain and source is the opposition offered to the drain current in saturation. It is the ratio of a positive voltage to the drain current is calculated using Finite Resistance = modulus(Positive DC Voltage)/Drain Current. To calculate Finite Resistance between Drain and Source, you need Positive DC Voltage (V_a) & Drain Current (i_d). With our tool, you need to enter the respective value for Positive DC Voltage & 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 Finite Resistance?

In this formula, Finite Resistance uses Positive DC Voltage & Drain Current. We can use 1 other way(s) to calculate the same, which is/are as follows -

Finite Resistance = Effective Voltage/Drain Current

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