Output Resistance of CS Amplifier with Source Resistance Calculator

✖The finite output resistance is a measure of how much the transistor's output impedance varies with changes in the output voltage.ⓘ Finite Output Resistance [R_out]			+10% -10%
✖Source resistance is the value of internal resistance of source.ⓘ Source Resistance [R_so]			+10% -10%
✖MOSFET Primary Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage.ⓘ MOSFET Primary Transconductance [g_mp]			+10% -10%

✖Drain resistance is the ratio of change in drain to source voltage to corresponding change in drain current for a constant gate to source voltage.ⓘ Output Resistance of CS Amplifier with Source Resistance [R_d]

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Output Resistance of CS Amplifier with Source Resistance Solution

STEP 0: Pre-Calculation Summary

Formula Used

Drain Resistance = Finite Output Resistance+Source Resistance+(MOSFET Primary Transconductance*Finite Output Resistance*Source Resistance)
R_d = R_out+R_so+(g_mp*R_out*R_so)
This formula uses 4 Variables

Variables Used

Drain Resistance - (Measured in Ohm) - Drain resistance is the ratio of change in drain to source voltage to corresponding change in drain current for a constant gate to source voltage.
Finite Output Resistance - (Measured in Ohm) - The finite output resistance is a measure of how much the transistor's output impedance varies with changes in the output voltage.
Source Resistance - (Measured in Ohm) - Source resistance is the value of internal resistance of source.
MOSFET Primary Transconductance - (Measured in Siemens) - MOSFET Primary Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage.

STEP 1: Convert Input(s) to Base Unit

Finite Output Resistance: 0.35 Kilohm --> 350 Ohm (Check conversion here)
Source Resistance: 0.0011 Kilohm --> 1.1 Ohm (Check conversion here)
MOSFET Primary Transconductance: 19.77 Millisiemens --> 0.01977 Siemens (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_d = R_out+R_so+(g_mp*R_out*R_so) --> 350+1.1+(0.01977*350*1.1)

Evaluating ... ...

R_d = 358.71145

STEP 3: Convert Result to Output's Unit

358.71145 Ohm -->0.35871145 Kilohm (Check conversion here)

FINAL ANSWER

0.35871145 ≈ 0.358711 Kilohm <-- Drain Resistance

(Calculation completed in 00.008 seconds)

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Birsa Institute of Technology (BIT), Sindri

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< Common Source Amplifier Calculators

Overall Feedback Voltage Gain of Common-Source Amplifier

LaTeX Go Feedback Voltage Gain = -MOSFET Primary Transconductance*(Input Resistance/(Input Resistance+Signal Resistance))*(1/Drain Resistance+1/Load Resistance+1/Finite Output Resistance)^-1

Open-Circuit Voltage Gain of CS Amplifier

LaTeX Go Open Circuit Voltage Gain = Finite Output Resistance/(Finite Output Resistance+1/MOSFET Primary Transconductance)

Current Gain of Controlled Source Transistor

LaTeX Go Current Gain = 1/(1+1/(MOSFET Primary Transconductance*Resistance between Drain and Ground))

Total Voltage Gain of CS Amplifier

LaTeX Go Voltage Gain = Load Voltage/Input Voltage

< CV Actions of Common Stage Amplifiers Calculators

Input Resistance of Common Emitter Amplifier

LaTeX Go Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/Small Signal Input Resistance)^-1

Input Impedance of Common-Base Amplifier

LaTeX Go Input Impedance = (1/Emitter Resistance+1/Small Signal Input Resistance)^(-1)

Fundamental Voltage in Common-Emitter Amplifier

LaTeX Go Fundamental Component Voltage = Input Resistance*Base Current

Emitter Current of Common-Base Amplifier

LaTeX Go Emitter Current = Input Voltage/Emitter Resistance

Output Resistance of CS Amplifier with Source Resistance Formula

LaTeX Go

Drain Resistance = Finite Output Resistance+Source Resistance+(MOSFET Primary Transconductance*Finite Output Resistance*Source Resistance)
R_d = R_out+R_so+(g_mp*R_out*R_so)

What is CS configuration?

Common-source configuration is where the input is a voltage between the gate and ground, and the output is a voltage between the drain and ground.

How to Calculate Output Resistance of CS Amplifier with Source Resistance?

Output Resistance of CS Amplifier with Source Resistance calculator uses Drain Resistance = Finite Output Resistance+Source Resistance+(MOSFET Primary Transconductance*Finite Output Resistance*Source Resistance) to calculate the Drain Resistance, The Output Resistance of CS Amplifier with Source Resistance refers to the total effective resistance at the amplifier's output terminal when considering the effects of both the amplifier's internal characteristics and the external circuit components. Drain Resistance is denoted by R_d symbol.

How to calculate Output Resistance of CS Amplifier with Source Resistance using this online calculator? To use this online calculator for Output Resistance of CS Amplifier with Source Resistance, enter Finite Output Resistance (R_out), Source Resistance (R_so) & MOSFET Primary Transconductance (g_mp) and hit the calculate button. Here is how the Output Resistance of CS Amplifier with Source Resistance calculation can be explained with given input values -> 0.000359 = 350+1.1+(0.01977*350*1.1).

FAQ

What is Output Resistance of CS Amplifier with Source Resistance?

The Output Resistance of CS Amplifier with Source Resistance refers to the total effective resistance at the amplifier's output terminal when considering the effects of both the amplifier's internal characteristics and the external circuit components and is represented as R_d = R_out+R_so+(g_mp*R_out*R_so) or Drain Resistance = Finite Output Resistance+Source Resistance+(MOSFET Primary Transconductance*Finite Output Resistance*Source Resistance). The finite output resistance is a measure of how much the transistor's output impedance varies with changes in the output voltage, Source resistance is the value of internal resistance of source & MOSFET Primary 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 Output Resistance of CS Amplifier with Source Resistance?

The Output Resistance of CS Amplifier with Source Resistance refers to the total effective resistance at the amplifier's output terminal when considering the effects of both the amplifier's internal characteristics and the external circuit components is calculated using Drain Resistance = Finite Output Resistance+Source Resistance+(MOSFET Primary Transconductance*Finite Output Resistance*Source Resistance). To calculate Output Resistance of CS Amplifier with Source Resistance, you need Finite Output Resistance (R_out), Source Resistance (R_so) & MOSFET Primary Transconductance (g_mp). With our tool, you need to enter the respective value for Finite Output Resistance, Source Resistance & MOSFET Primary 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 Drain Resistance?

In this formula, Drain Resistance uses Finite Output Resistance, Source Resistance & MOSFET Primary Transconductance. We can use 3 other way(s) to calculate the same, which is/are as follows -

Drain Resistance = Resistance of Secondary Winding in Primary+2*Finite Resistance+2*Finite Resistance*MOSFET Primary Transconductance*Resistance of Secondary Winding in Primary
Drain Resistance = Resistance of Secondary Winding in Primary+2*Finite Resistance+2*Finite Resistance*MOSFET Primary Transconductance*Resistance of Secondary Winding in Primary
Drain Resistance = Finite Output Resistance+(MOSFET Primary Transconductance*Finite Output Resistance)*(1/Emitter Resistance+1/Small Signal Input Resistance)

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