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)))
Rin = (Re*(Rout+RL))/(Rout+(RL/(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
Rin = (Re*(Rout+RL))/(Rout+(RL/(β+1))) --> (67*(350+1013))/(350+(1013/(12+1)))
Evaluating ... ...
Rin = 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 00.020 seconds)

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8 Common-Base Amplifier Calculators

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)))
Total Current Gain with respect to Voltage Gain
Go Common Base Current Gain = Overall Voltage Gain/(Collector Resistance/Emitter Resistance*(Input Resistance/(Input Resistance+Signal Resistance)))
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)
Input Impedance of Common-Base Amplifier
Go Input Impedance = (1/Emitter Resistance+1/Small Signal Input Resistance)^(-1)
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
Voltage Gain of Common-Base Amplifier
Go Voltage Gain = Collector Voltage/Emitter Voltage

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

Input Resistance of Common-Base Circuit Formula

Input Resistance = (Emitter Resistance*(Finite Output Resistance+Load Resistance))/(Finite Output Resistance+(Load Resistance/(Collector Base Current Gain+1)))
Rin = (Re*(Rout+RL))/(Rout+(RL/(β+1)))

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 Rin 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 (Re), Finite Output Resistance (Rout), Load Resistance (RL) & 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 Rin = (Re*(Rout+RL))/(Rout+(RL/(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 (Re), Finite Output Resistance (Rout), Load Resistance (RL) & 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 4 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
  • Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/((Total Resistance+Emitter Resistance)*(Collector Base Current Gain+1)))^-1
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