Output Resistance of Emitter-Degenerated CE Amplifier 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%
✖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%
✖Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.ⓘ Emitter Resistance [R_e]			+10% -10%
✖Small signal input resistance 2 between Base and emitter models how the input impedance between the base and emitter terminals of the transistor changes when a small AC signal is applied.ⓘ Small Signal Input Resistance [R_sm]			+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 Emitter-Degenerated CE Amplifier [R_d]

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Formula

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Output Resistance of Emitter-Degenerated CE Amplifier

Formula

`"R"_{"d"} = "R"_{"out"}+("g"_{"mp"}*"R"_{"out"})*(1/"R"_{"e"}+1/"R"_{"sm"})`

Example

`"0.350108kΩ"="0.35kΩ"+("19.77mS"*"0.35kΩ")*(1/"0.067kΩ"+1/"1.45kΩ")`

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Output Resistance of Emitter-Degenerated CE Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Drain Resistance = Finite Output Resistance+(MOSFET Primary Transconductance*Finite Output Resistance)*(1/Emitter Resistance+1/Small Signal Input Resistance)
R_d = R_out+(g_mp*R_out)*(1/R_e+1/R_sm)
This formula uses 5 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.
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.
Emitter Resistance - (Measured in Ohm) - Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.
Small Signal Input Resistance - (Measured in Ohm) - Small signal input resistance 2 between Base and emitter models how the input impedance between the base and emitter terminals of the transistor changes when a small AC signal is applied.

STEP 1: Convert Input(s) to Base Unit

Finite Output Resistance: 0.35 Kilohm --> 350 Ohm (Check conversion here)
MOSFET Primary Transconductance: 19.77 Millisiemens --> 0.01977 Siemens (Check conversion here)
Emitter Resistance: 0.067 Kilohm --> 67 Ohm (Check conversion here)
Small Signal Input Resistance: 1.45 Kilohm --> 1450 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_d = R_out+(g_mp*R_out)*(1/R_e+1/R_sm) --> 350+(0.01977*350)*(1/67+1/1450)

Evaluating ... ...

R_d = 350.108048188369

STEP 3: Convert Result to Output's Unit

350.108048188369 Ohm -->0.350108048188368 Kilohm (Check conversion here)

FINAL ANSWER

0.350108048188368 ≈ 0.350108 Kilohm <-- Drain Resistance

(Calculation completed in 00.004 seconds)

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< 8 Common-Emitter Amplifier Calculators

Overall Feedback Voltage Gain of Common-Collector Amplifier

Go Overall Voltage Gain = ((Collector Base Current Gain+1)*Load Resistance)/((Collector Base Current Gain+1)*Load Resistance+(Collector Base Current Gain+1)*Emitter Resistance+Signal Resistance)

Overall Voltage Gain of Common-Emitter Amplifier

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

Overall Feedback Voltage Gain of Common-Emitter Amplifier

Go Feedback Voltage Gain = -Common Base Current Gain*Collector Resistance/Emitter Resistance*(Input Resistance/(Input Resistance+Signal Resistance))

Output Resistance of Emitter-Degenerated CE Amplifier

Go Drain Resistance = Finite Output Resistance+(MOSFET Primary Transconductance*Finite Output Resistance)*(1/Emitter Resistance+1/Small Signal Input Resistance)

Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance

Go Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/(Small Signal Input Resistance+(Collector Base Current Gain+1)*Emitter Resistance))^-1

Input Resistance of Common-Emitter Amplifier given Emitter Resistance

Go Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/((Total Resistance+Emitter Resistance)*(Collector Base Current Gain+1)))^-1

Input Resistance of Common Emitter Amplifier

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

Fundamental Voltage in Common-Emitter Amplifier

Go Fundamental Component Voltage = Input Resistance*Base Current

< 18 CV Actions of Common Stage Amplifiers Calculators

Output Voltage of Controlled Source Transistor

Go DC Component of Gate to Source Voltage = (Voltage Gain*Electric Current-Short Circuit Transconductance*Differential Output Signal)*(1/Final Resistance+1/Resistance of Primary Winding in Secondary)

Input Resistance of Common-Base Circuit

Go Input Resistance = (Emitter Resistance*(Finite Output Resistance+Load Resistance))/(Finite Output Resistance+(Load Resistance/(Collector Base Current Gain+1)))

Output Resistance at Another Drain of Controlled Source Transistor

Go Drain Resistance = Resistance of Secondary Winding in Primary+2*Finite Resistance+2*Finite Resistance*MOSFET Primary Transconductance*Resistance of Secondary Winding in Primary

Output Resistance of Emitter-Degenerated CE Amplifier

Go Drain Resistance = Finite Output Resistance+(MOSFET Primary Transconductance*Finite Output Resistance)*(1/Emitter Resistance+1/Small Signal Input Resistance)

Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance

Go Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/(Small Signal Input Resistance+(Collector Base Current Gain+1)*Emitter Resistance))^-1

Output Resistance of CS Amplifier with Source Resistance

Go Drain Resistance = Finite Output Resistance+Source Resistance+(MOSFET Primary Transconductance*Finite Output Resistance*Source Resistance)

Input Resistance of Common-Emitter Amplifier given Emitter Resistance

Go Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/((Total Resistance+Emitter Resistance)*(Collector Base Current Gain+1)))^-1

Instantaneous Drain Current using Voltage between Drain and Source

Go Drain Current = Transconductance Parameter*(Voltage across Oxide-Threshold Voltage)*Voltage between Gate and Source

Transconductance in Common Source Amplifier

Go MOSFET Primary Transconductance = Unity Gain Frequency*(Gate to Source Capacitance+Capacitance Gate to Drain)

Input Resistance of Common Emitter Amplifier

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

Input Impedance of Common-Base Amplifier

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

Signal Current in Emitter given Input Signal

Go Signal Current in Emitter = Fundamental Component Voltage/Emitter Resistance

Transconductance using Collector Current of Transistor Amplifier

Go MOSFET Primary Transconductance = Collector Current/Threshold Voltage

Fundamental Voltage in Common-Emitter Amplifier

Go Fundamental Component Voltage = Input Resistance*Base Current

Input Resistance of Common-Collector Amplifier

Go Input Resistance = Fundamental Component Voltage/Base Current

Resistance of Emitter in Common-Base Amplifier

Go Emitter Resistance = Input Voltage/Emitter Current

Emitter Current of Common-Base Amplifier

Go Emitter Current = Input Voltage/Emitter Resistance

Load Voltage of CS Amplifier

Go Load Voltage = Voltage Gain*Input Voltage

Output Resistance of Emitter-Degenerated CE Amplifier Formula

Drain Resistance = Finite Output Resistance+(MOSFET Primary Transconductance*Finite Output Resistance)*(1/Emitter Resistance+1/Small Signal Input Resistance)
R_d = R_out+(g_mp*R_out)*(1/R_e+1/R_sm)

What is Emitter-Degenerated CE Amplifier?

Emitter degeneration refers to the addition of a small resistor (R4) between the emitter and the common signal source. In this circuit the base terminal of the transistor is the input, the collector is the output, and the emitter is common to both. It is a voltage amplifier with an inverted output.

How to Calculate Output Resistance of Emitter-Degenerated CE Amplifier?

Output Resistance of Emitter-Degenerated CE Amplifier calculator uses Drain Resistance = Finite Output Resistance+(MOSFET Primary Transconductance*Finite Output Resistance)*(1/Emitter Resistance+1/Small Signal Input Resistance) to calculate the Drain Resistance, The Output Resistance of Emitter-Degenerated CE Amplifier of electrical network is measure of opposition to current flow (impedance), both static (resistance) and dynamic (reactance), into load network being connected that is internal to electrical source. Drain Resistance is denoted by R_d symbol.

How to calculate Output Resistance of Emitter-Degenerated CE Amplifier using this online calculator? To use this online calculator for Output Resistance of Emitter-Degenerated CE Amplifier, enter Finite Output Resistance (R_out), MOSFET Primary Transconductance (g_mp), Emitter Resistance (R_e) & Small Signal Input Resistance (R_sm) and hit the calculate button. Here is how the Output Resistance of Emitter-Degenerated CE Amplifier calculation can be explained with given input values -> 0.00035 = 350+(0.01977*350)*(1/67+1/1450).

FAQ

What is Output Resistance of Emitter-Degenerated CE Amplifier?

The Output Resistance of Emitter-Degenerated CE Amplifier of electrical network is measure of opposition to current flow (impedance), both static (resistance) and dynamic (reactance), into load network being connected that is internal to electrical source and is represented as R_d = R_out+(g_mp*R_out)*(1/R_e+1/R_sm) or Drain Resistance = Finite Output Resistance+(MOSFET Primary Transconductance*Finite Output Resistance)*(1/Emitter Resistance+1/Small Signal Input Resistance). The finite output resistance is a measure of how much the transistor's output impedance varies with changes in the output voltage, 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, Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor & Small signal input resistance 2 between Base and emitter models how the input impedance between the base and emitter terminals of the transistor changes when a small AC signal is applied.

How to calculate Output Resistance of Emitter-Degenerated CE Amplifier?

The Output Resistance of Emitter-Degenerated CE Amplifier of electrical network is measure of opposition to current flow (impedance), both static (resistance) and dynamic (reactance), into load network being connected that is internal to electrical source is calculated using Drain Resistance = Finite Output Resistance+(MOSFET Primary Transconductance*Finite Output Resistance)*(1/Emitter Resistance+1/Small Signal Input Resistance). To calculate Output Resistance of Emitter-Degenerated CE Amplifier, you need Finite Output Resistance (R_out), MOSFET Primary Transconductance (g_mp), Emitter Resistance (R_e) & Small Signal Input Resistance (R_sm). With our tool, you need to enter the respective value for Finite Output Resistance, MOSFET Primary Transconductance, Emitter Resistance & Small Signal Input Resistance 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, MOSFET Primary Transconductance, Emitter Resistance & Small Signal Input Resistance. We can use 2 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 = Finite Output Resistance+Source Resistance+(MOSFET Primary Transconductance*Finite Output Resistance*Source Resistance)

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