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## Credits

Birsa Institute of Technology (BIT), Sindri
Payal Priya has created this Calculator and 500+ more calculators!
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## Output resistance of the buffer amplifier Solution

STEP 0: Pre-Calculation Summary
Formula Used
resistance_output = 1*Emitter Resistance
Ro = 1*re
This formula uses 1 Variables
Variables Used
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
Emitter Resistance: 50 Ohm --> 50 Ohm No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Ro = 1*re --> 1*50
Evaluating ... ...
Ro = 50
STEP 3: Convert Result to Output's Unit
50 Ohm --> No Conversion Required
FINAL ANSWER
50 Ohm <-- Output resistance
(Calculation completed in 00.000 seconds)

## < 10+ Common-Gate (CG) and the Common-Base (CB) Amplifiers Calculators

Overall voltage gain of the amplifier when load resistance is connected to the output
overall_voltage_gain = Common-base current gain.*(1/Total resistance in the emitter+1/Load resistance)/(Signal Resistance+Emitter Resistance) Go
Overall voltage gain of the amplifier
overall_voltage_gain = (1/Load resistance of MOSFET+1/Load resistance)/(Signal Resistance+1/MOSFET transconductance parameter) Go
Overall voltage gain of the source follower
overall_voltage_gain = Load resistance/(Load resistance+1/MOSFET Transconductance) Go
Output voltage in terms of the transconductance
output_voltage = -(MOSFET Transconductance*Load Resistance*Finite input voltage) Go
Voltage gain of the buffer amplifier
voltage_gain_amplifier = Load resistance/(Load resistance+Emitter Resistance) Go
Voltage gain of the common-drain amplifier
voltage_gain = Input resistance/(Load resistance+1/MOSFET Transconductance) Go
Voltage gain of the CS amplifier
voltage_gain_amplifier = MOSFET Transconductance*Load resistance of MOSFET Go
Input resistance of the common-collector amplifier
resistance_input = Input voltage/Signal current in the base Go
Output resistance of the common-drain amplifier
resistance_output = 1/MOSFET Transconductance Go
Input resistance of the MOSFETs transconductance
resistance_input = 1/MOSFET Transconductance Go

### Output resistance of the buffer amplifier Formula

resistance_output = 1*Emitter Resistance
Ro = 1*re

## Why common collector amplifier is called buffer?

The common base configuration has nearly unity current gain. Hence it is not a current amplifier (as it does not provide a current gain in excess of one). Because of this unity current gain, it is termed as a buffer.

## How to Calculate Output resistance of the buffer amplifier?

Output resistance of the buffer amplifier calculator uses resistance_output = 1*Emitter Resistance to calculate the Output resistance, The output resistance of the buffer amplifier formula is defined as a two-terminal network that can be determined by measuring the small-signal AC currents and voltages. Output resistance and is denoted by Ro symbol.

How to calculate Output resistance of the buffer amplifier using this online calculator? To use this online calculator for Output resistance of the buffer amplifier, enter Emitter Resistance (re) and hit the calculate button. Here is how the Output resistance of the buffer amplifier calculation can be explained with given input values -> 50 = 1*50.

### FAQ

What is Output resistance of the buffer amplifier?
The output resistance of the buffer amplifier formula is defined as a two-terminal network that can be determined by measuring the small-signal AC currents and voltages and is represented as Ro = 1*re or resistance_output = 1*Emitter Resistance. Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.
How to calculate Output resistance of the buffer amplifier?
The output resistance of the buffer amplifier formula is defined as a two-terminal network that can be determined by measuring the small-signal AC currents and voltages is calculated using resistance_output = 1*Emitter Resistance. To calculate Output resistance of the buffer amplifier, you need Emitter Resistance (re). With our tool, you need to enter the respective value for 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 Output resistance?
In this formula, Output resistance uses Emitter Resistance. We can use 10 other way(s) to calculate the same, which is/are as follows -
• resistance_input = 1/MOSFET Transconductance
• voltage_gain_amplifier = MOSFET Transconductance*Load resistance of MOSFET
• overall_voltage_gain = (1/Load resistance of MOSFET+1/Load resistance)/(Signal Resistance+1/MOSFET transconductance parameter)
• overall_voltage_gain = Common-base current gain.*(1/Total resistance in the emitter+1/Load resistance)/(Signal Resistance+Emitter Resistance)
• output_voltage = -(MOSFET Transconductance*Load Resistance*Finite input voltage)
• voltage_gain = Input resistance/(Load resistance+1/MOSFET Transconductance)
• resistance_output = 1/MOSFET Transconductance
• overall_voltage_gain = Load resistance/(Load resistance+1/MOSFET Transconductance)
• resistance_input = Input voltage/Signal current in the base
• voltage_gain_amplifier = Load resistance/(Load resistance+Emitter Resistance)
Where is the Output resistance of the buffer amplifier calculator used?
Among many, Output resistance of the buffer amplifier calculator is widely used in real life applications like {FormulaUses}. Here are few more real life examples -
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