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

✖Base resistance is a measure of the opposition to current flow in an electrical circuit.ⓘ Base Resistance [R_b]			+10% -10%
✖Base resistance 2 is a measure of the opposition to current flow in an electrical circuit.ⓘ Base Resistance 2 [R_b2]			+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%
✖Collector Base Current Gain is a term used in electronic circuits to describe the maximum current that a collector-emitter junction of a transistor can tolerate without breaking down.ⓘ Collector Base Current Gain [β]			+10% -10%
✖Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.ⓘ Emitter Resistance [R_e]			+10% -10%

✖Input resistance 2 is the opposition that an electrical component or circuit presents to the flow of electrical current when a voltage is applied to it.ⓘ Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance [R_in]

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

STEP 0: Pre-Calculation Summary

Formula Used

Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/(Small Signal Input Resistance+(Collector Base Current Gain+1)*Emitter Resistance))^-1
R_in = (1/R_b+1/R_b2+1/(R_sm+(β+1)*R_e))^-1
This formula uses 6 Variables

Variables Used

Input Resistance - (Measured in Ohm) - Input resistance 2 is the opposition that an electrical component or circuit presents to the flow of electrical current when a voltage is applied to it.
Base Resistance - (Measured in Ohm) - Base resistance is a measure of the opposition to current flow in an electrical circuit.
Base Resistance 2 - (Measured in Ohm) - Base resistance 2 is a measure of the opposition to current flow in an electrical circuit.
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.
Collector Base Current Gain - Collector Base Current Gain is a term used in electronic circuits to describe the maximum current that a collector-emitter junction of a transistor can tolerate without breaking down.
Emitter Resistance - (Measured in Ohm) - Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.

STEP 1: Convert Input(s) to Base Unit

Base Resistance: 1.213 Kilohm --> 1213 Ohm (Check conversion here)
Base Resistance 2: 0.534 Kilohm --> 534 Ohm (Check conversion here)
Small Signal Input Resistance: 1.45 Kilohm --> 1450 Ohm (Check conversion here)
Collector Base Current Gain: 12 --> No Conversion Required
Emitter Resistance: 0.067 Kilohm --> 67 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_in = (1/R_b+1/R_b2+1/(R_sm+(β+1)*R_e))^-1 --> (1/1213+1/534+1/(1450+(12+1)*67))^-1

Evaluating ... ...

R_in = 319.702267014196

STEP 3: Convert Result to Output's Unit

319.702267014196 Ohm -->0.319702267014196 Kilohm (Check conversion here)

FINAL ANSWER

0.319702267014196 ≈ 0.319702 Kilohm <-- Input Resistance

(Calculation completed in 00.004 seconds)

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< Common Emitter Amplifier Calculators

Overall Feedback Voltage Gain of Common-Collector Amplifier

LaTeX 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

LaTeX 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

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

Fundamental Voltage in Common-Emitter Amplifier

LaTeX Go Fundamental Component Voltage = Input Resistance*Base Current

< 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

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

LaTeX Go

Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/(Small Signal Input Resistance+(Collector Base Current Gain+1)*Emitter Resistance))^-1
R_in = (1/R_b+1/R_b2+1/(R_sm+(β+1)*R_e))^-1

What does a common emitter amplifier do?

The common emitter amplifier configuration provides voltage gain and is one of the most widely used transistor configurations for electronic circuit design. The common emitter transistor amplifier circuit is one of the mainstay circuits for use within electronic circuit design offers many advantages.

How to Calculate Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance?

Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance calculator uses Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/(Small Signal Input Resistance+(Collector Base Current Gain+1)*Emitter Resistance))^-1 to calculate the Input Resistance, The Input resistance of common emitter amplifier given small-signal input resistance formula is defined as the opposition offered to the flow of the current of the electrical circuit. Input Resistance is denoted by R_in symbol.

How to calculate Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance using this online calculator? To use this online calculator for Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance, enter Base Resistance (R_b), Base Resistance 2 (R_b2), Small Signal Input Resistance (R_sm), Collector Base Current Gain (β) & Emitter Resistance (R_e) and hit the calculate button. Here is how the Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance calculation can be explained with given input values -> 0.00032 = (1/1213+1/534+1/(1450+(12+1)*67))^-1.

FAQ

What is Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance?

The Input resistance of common emitter amplifier given small-signal input resistance formula is defined as the opposition offered to the flow of the current of the electrical circuit and is represented as R_in = (1/R_b+1/R_b2+1/(R_sm+(β+1)*R_e))^-1 or Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/(Small Signal Input Resistance+(Collector Base Current Gain+1)*Emitter Resistance))^-1. Base resistance is a measure of the opposition to current flow in an electrical circuit, Base resistance 2 is a measure of the opposition to current flow in an electrical circuit, 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, Collector Base Current Gain is a term used in electronic circuits to describe the maximum current that a collector-emitter junction of a transistor can tolerate without breaking down & Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.

How to calculate Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance?

The Input resistance of common emitter amplifier given small-signal input resistance formula is defined as the opposition offered to the flow of the current of the electrical circuit is calculated using Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/(Small Signal Input Resistance+(Collector Base Current Gain+1)*Emitter Resistance))^-1. To calculate Input Resistance of Common Emitter Amplifier given Small-Signal Input Resistance, you need Base Resistance (R_b), Base Resistance 2 (R_b2), Small Signal Input Resistance (R_sm), Collector Base Current Gain (β) & Emitter Resistance (R_e). With our tool, you need to enter the respective value for Base Resistance, Base Resistance 2, Small Signal Input Resistance, Collector Base Current Gain & Emitter 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 Input Resistance?

In this formula, Input Resistance uses Base Resistance, Base Resistance 2, Small Signal Input Resistance, Collector Base Current Gain & Emitter Resistance. We can use 3 other way(s) to calculate the same, which is/are as follows -

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

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