Input Resistance of Common-Base Circuit Calculator

✖Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.ⓘ Emitter Resistance [R_e]			+10% -10%
✖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%
✖Load resistance is the resistance value of load given for the network.ⓘ Load Resistance [R_L]			+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%

✖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-Base Circuit [R_in]

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Formula

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Input Resistance of Common-Base Circuit

Formula

R in = \frac{R e \cdot (R out + R L)}{R out + (\frac{R L}{β + 1})}

Example

0.213405 kΩ = \frac{0.067 kΩ \cdot (0.35 kΩ + 1.013 kΩ)}{0.35 kΩ + (\frac{1.013 kΩ}{12 + 1})}

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Input Resistance of Common-Base Circuit Solution

STEP 0: Pre-Calculation Summary

Formula Used

Input Resistance = (Emitter Resistance*(Finite Output Resistance+Load Resistance))/(Finite Output Resistance+(Load Resistance/(Collector Base Current Gain+1)))
R_in = (R_e*(R_out+R_L))/(R_out+(R_L/(β+1)))
This formula uses 5 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.
Emitter Resistance - (Measured in Ohm) - Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.
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.
Load Resistance - (Measured in Ohm) - Load resistance is the resistance value of load given for the network.
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.

STEP 1: Convert Input(s) to Base Unit

Emitter Resistance: 0.067 Kilohm --> 67 Ohm (Check conversion here)
Finite Output Resistance: 0.35 Kilohm --> 350 Ohm (Check conversion here)
Load Resistance: 1.013 Kilohm --> 1013 Ohm (Check conversion here)
Collector Base Current Gain: 12 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_in = (R_e*(R_out+R_L))/(R_out+(R_L/(β+1))) --> (67*(350+1013))/(350+(1013/(12+1)))

Evaluating ... ...

R_in = 213.405177062736

STEP 3: Convert Result to Output's Unit

213.405177062736 Ohm -->0.213405177062736 Kilohm (Check conversion here)

FINAL ANSWER

0.213405177062736 ≈ 0.213405 Kilohm <-- Input Resistance

(Calculation completed in 00.004 seconds)

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< Common Base Amplifier Calculators

Negative Voltage Gain from Base to Collector

Go Negative Voltage Gain = -Common Base Current Gain*(Collector Resistance/Emitter Resistance)

Common Base Current Gain

Go Common Base Current Gain = (Voltage Gain*Emitter Resistance/Collector Resistance)

Emitter Current of Common-Base Amplifier

Go Emitter Current = Input Voltage/Emitter Resistance

Voltage Gain of Common-Base Amplifier

Go Voltage Gain = Collector Voltage/Emitter Voltage

< CV Actions of Common Stage Amplifiers Calculators

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)

Fundamental Voltage in Common-Emitter Amplifier

Go Fundamental Component Voltage = Input Resistance*Base Current

Emitter Current of Common-Base Amplifier

Go Emitter Current = Input Voltage/Emitter Resistance

Input Resistance of Common-Base Circuit Formula

What is the use of common-gate circuit?

This circuit configuration normally used as a voltage amplifier. The source of FET in this configuration is operating as input and drain as output.

How to Calculate Input Resistance of Common-Base Circuit?

Input Resistance of Common-Base Circuit calculator uses Input Resistance = (Emitter Resistance*(Finite Output Resistance+Load Resistance))/(Finite Output Resistance+(Load Resistance/(Collector Base Current Gain+1))) to calculate the Input Resistance, The input resistance of common-base circuit formula is defined as involves placing extra-high voltage across insulation barrier of device for one minute. Input Resistance is denoted by R_in symbol.

How to calculate Input Resistance of Common-Base Circuit using this online calculator? To use this online calculator for Input Resistance of Common-Base Circuit, enter Emitter Resistance (R_e), Finite Output Resistance (R_out), Load Resistance (R_L) & Collector Base Current Gain (β) and hit the calculate button. Here is how the Input Resistance of Common-Base Circuit calculation can be explained with given input values -> 0.000213 = (67*(350+1013))/(350+(1013/(12+1))).

FAQ

What is Input Resistance of Common-Base Circuit?

The input resistance of common-base circuit formula is defined as involves placing extra-high voltage across insulation barrier of device for one minute and is represented as R_in = (R_e*(R_out+R_L))/(R_out+(R_L/(β+1))) or Input Resistance = (Emitter Resistance*(Finite Output Resistance+Load Resistance))/(Finite Output Resistance+(Load Resistance/(Collector Base Current Gain+1))). Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor, The finite output resistance is a measure of how much the transistor's output impedance varies with changes in the output voltage, Load resistance is the resistance value of load given for the network & 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.

How to calculate Input Resistance of Common-Base Circuit?

The input resistance of common-base circuit formula is defined as involves placing extra-high voltage across insulation barrier of device for one minute is calculated using Input Resistance = (Emitter Resistance*(Finite Output Resistance+Load Resistance))/(Finite Output Resistance+(Load Resistance/(Collector Base Current Gain+1))). To calculate Input Resistance of Common-Base Circuit, you need Emitter Resistance (R_e), Finite Output Resistance (R_out), Load Resistance (R_L) & Collector Base Current Gain (β). With our tool, you need to enter the respective value for Emitter Resistance, Finite Output Resistance, Load Resistance & Collector Base Current Gain 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 Emitter Resistance, Finite Output Resistance, Load Resistance & Collector Base Current Gain. 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/(Small Signal Input Resistance+(Collector Base Current Gain+1)*Emitter Resistance))^-1
Input Resistance = Fundamental Component Voltage/Base Current

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