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Input resistance of the common-base amplifier in terms of emitter resistance Solution

STEP 0: Pre-Calculation Summary
Formula Used
resistance_input = (1/Total resistance in the emitter+1/Emitter Resistance)
Ri = (1/R+1/re)
This formula uses 2 Variables
Variables Used
Total resistance in the emitter - The total resistance in the emitter is the total opposition caused in the flow of current in the emitter (Measured in Ohm)
Emitter Resistance - Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor. (Measured in Ohm)
STEP 1: Convert Input(s) to Base Unit
Total resistance in the emitter: 40 Ohm --> 40 Ohm No Conversion Required
Emitter Resistance: 50 Ohm --> 50 Ohm No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Ri = (1/R+1/re) --> (1/40+1/50)
Evaluating ... ...
Ri = 0.045
STEP 3: Convert Result to Output's Unit
0.045 Ohm --> No Conversion Required
FINAL ANSWER
0.045 Ohm <-- Input resistance
(Calculation completed in 00.016 seconds)

7 Common-base amplifier Calculators

Overall voltage gain of the common-base amplifier
overall_voltage_gain = Common emitter current gain*(Input resistance/(Input resistance+Signal Resistance))*((1/Total resistance in collector+1/Load resistance)/Emitter Resistance) Go
Overall voltage gain of the common-base amplifier in terms of transconductance
overall_voltage_gain = (Input resistance/(Input resistance+Signal Resistance))*MOSFET Transconductance*(1/Total resistance in collector+1/Load resistance) Go
Output voltage of the common-base amplifier
output_voltage = -(Common emitter current gain*Emitter current*(1/Load Resistance+1/Load resistance)) Go
Input voltage of the common-base amplifier
input_voltage = Small-signal voltage*(Input resistance/(Input resistance+Signal Resistance)) Go
Input resistance of the common-base amplifier in terms of emitter resistance
resistance_input = (1/Total resistance in the emitter+1/Emitter Resistance) Go
Emitter current of the common-base amplifier
emitter_current = -(Input voltage/Emitter Resistance) Go
Input resistance of the common-base amplifier
resistance_input = 1/MOSFET Transconductance Go

Input resistance of the common-base amplifier in terms of emitter resistance Formula

resistance_input = (1/Total resistance in the emitter+1/Emitter Resistance)
Ri = (1/R+1/re)

What is the advantage of a common base amplifier?

The common base circuit works best as a current buffer. It can take an input current at a low input impedance, and deliver nearly that same current to a higher impedance output.

How to Calculate Input resistance of the common-base amplifier in terms of emitter resistance?

Input resistance of the common-base amplifier in terms of emitter resistance calculator uses resistance_input = (1/Total resistance in the emitter+1/Emitter Resistance) to calculate the Input resistance, The input resistance of the common-base amplifier in terms of emitter resistance the opposition offered to the flow of current in the base region of the electrical circuit. Input resistance and is denoted by Ri symbol.

How to calculate Input resistance of the common-base amplifier in terms of emitter resistance using this online calculator? To use this online calculator for Input resistance of the common-base amplifier in terms of emitter resistance, enter Total resistance in the emitter (R) and Emitter Resistance (re) and hit the calculate button. Here is how the Input resistance of the common-base amplifier in terms of emitter resistance calculation can be explained with given input values -> 0.045 = (1/40+1/50).

FAQ

What is Input resistance of the common-base amplifier in terms of emitter resistance?
The input resistance of the common-base amplifier in terms of emitter resistance the opposition offered to the flow of current in the base region of the electrical circuit and is represented as Ri = (1/R+1/re) or resistance_input = (1/Total resistance in the emitter+1/Emitter Resistance). The total resistance in the emitter is the total opposition caused in the flow of current in the emitter and Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.
How to calculate Input resistance of the common-base amplifier in terms of emitter resistance?
The input resistance of the common-base amplifier in terms of emitter resistance the opposition offered to the flow of current in the base region of the electrical circuit is calculated using resistance_input = (1/Total resistance in the emitter+1/Emitter Resistance). To calculate Input resistance of the common-base amplifier in terms of emitter resistance, you need Total resistance in the emitter (R) and Emitter Resistance (re). With our tool, you need to enter the respective value for Total resistance in the emitter and 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 Total resistance in the emitter and Emitter Resistance. We can use 7 other way(s) to calculate the same, which is/are as follows -
  • resistance_input = 1/MOSFET Transconductance
  • input_voltage = Small-signal voltage*(Input resistance/(Input resistance+Signal Resistance))
  • emitter_current = -(Input voltage/Emitter Resistance)
  • resistance_input = (1/Total resistance in the emitter+1/Emitter Resistance)
  • output_voltage = -(Common emitter current gain*Emitter current*(1/Load Resistance+1/Load resistance))
  • overall_voltage_gain = Common emitter current gain*(Input resistance/(Input resistance+Signal Resistance))*((1/Total resistance in collector+1/Load resistance)/Emitter Resistance)
  • overall_voltage_gain = (Input resistance/(Input resistance+Signal Resistance))*MOSFET Transconductance*(1/Total resistance in collector+1/Load resistance)
Where is the Input resistance of the common-base amplifier in terms of emitter resistance calculator used?
Among many, Input resistance of the common-base amplifier in terms of emitter resistance calculator is widely used in real life applications like {FormulaUses}. Here are few more real life examples -
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