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Birsa Institute of Technology (BIT), Sindri
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Input voltage of the common-base amplifier Solution

STEP 0: Pre-Calculation Summary
Formula Used
input_voltage = Small-signal voltage*(Input resistance/(Input resistance+Signal Resistance))
Vi = vπ *(Ri/(Ri+Rs))
This formula uses 3 Variables
Variables Used
Small-signal voltage - The small-signal voltage is a quantitative expression of the potential difference in electrical charge between two points in an electrical field. (Measured in Volt)
Input resistance - Input resistance is the resistance value of the voltage amplifier (Measured in Ohm)
Signal Resistance- Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier
STEP 1: Convert Input(s) to Base Unit
Small-signal voltage: 75 Volt --> 75 Volt No Conversion Required
Input resistance: 100000 Ohm --> 100000 Ohm No Conversion Required
Signal Resistance: 1 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Vi = vπ *(Ri/(Ri+Rs)) --> 75*(100000/(100000+1))
Evaluating ... ...
Vi = 74.9992500074999
STEP 3: Convert Result to Output's Unit
74.9992500074999 Volt --> No Conversion Required
FINAL ANSWER
74.9992500074999 Volt <-- Input voltage
(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 voltage of the common-base amplifier Formula

input_voltage = Small-signal voltage*(Input resistance/(Input resistance+Signal Resistance))
Vi = vπ *(Ri/(Ri+Rs))

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 voltage of the common-base amplifier?

Input voltage of the common-base amplifier calculator uses input_voltage = Small-signal voltage*(Input resistance/(Input resistance+Signal Resistance)) to calculate the Input voltage, The Input voltage of the common-base amplifier formula is defined as a voltage supplied to the circuit, the input voltage is a supply voltage in the system, the Input voltage is referred to the voltage needed to supply to the system. Input voltage and is denoted by Vi symbol.

How to calculate Input voltage of the common-base amplifier using this online calculator? To use this online calculator for Input voltage of the common-base amplifier, enter Small-signal voltage (vπ ), Input resistance (Ri) and Signal Resistance (Rs) and hit the calculate button. Here is how the Input voltage of the common-base amplifier calculation can be explained with given input values -> 74.99925 = 75*(100000/(100000+1)).

FAQ

What is Input voltage of the common-base amplifier?
The Input voltage of the common-base amplifier formula is defined as a voltage supplied to the circuit, the input voltage is a supply voltage in the system, the Input voltage is referred to the voltage needed to supply to the system and is represented as Vi = vπ *(Ri/(Ri+Rs)) or input_voltage = Small-signal voltage*(Input resistance/(Input resistance+Signal Resistance)). The small-signal voltage is a quantitative expression of the potential difference in electrical charge between two points in an electrical field. , Input resistance is the resistance value of the voltage amplifier and Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier.
How to calculate Input voltage of the common-base amplifier?
The Input voltage of the common-base amplifier formula is defined as a voltage supplied to the circuit, the input voltage is a supply voltage in the system, the Input voltage is referred to the voltage needed to supply to the system is calculated using input_voltage = Small-signal voltage*(Input resistance/(Input resistance+Signal Resistance)). To calculate Input voltage of the common-base amplifier, you need Small-signal voltage (vπ ), Input resistance (Ri) and Signal Resistance (Rs). With our tool, you need to enter the respective value for Small-signal voltage, Input resistance and Signal 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 voltage?
In this formula, Input voltage uses Small-signal voltage, Input resistance and Signal 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 voltage of the common-base amplifier calculator used?
Among many, Input voltage of the common-base amplifier calculator is widely used in real life applications like {FormulaUses}. Here are few more real life examples -
{FormulaExamplesList}
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