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## Credits

Birsa Institute of Technology (BIT), Sindri
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## Output voltage of the emitter-follower Solution

STEP 0: Pre-Calculation Summary
Formula Used
output_voltage = Input voltage*((1/Total resistance in the emitter+1/Output resistance+1/Load resistance)/(Emitter Resistance+(1/Total resistance in the emitter+1/Output resistance+1/Load resistance)))
Vo = Vi*((1/R+1/Ro+1/Rl)/(re+(1/R+1/Ro+1/Rl)))
This formula uses 5 Variables
Variables Used
Input voltage - Input voltage is the voltage supplied to the device (Measured in Volt)
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)
Output resistance - Output resistance is the value of resistance of the network (Measured in Ohm)
Load resistance - Load resistance is the resistance value of load given for the network (Measured in Kilohm)
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
Input voltage: 1 Volt --> 1 Volt No Conversion Required
Total resistance in the emitter: 40 Ohm --> 40 Ohm No Conversion Required
Output resistance: 200 Ohm --> 200 Ohm No Conversion Required
Load resistance: 1 Kilohm --> 1000 Ohm (Check conversion here)
Emitter Resistance: 50 Ohm --> 50 Ohm No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Vo = Vi*((1/R+1/Ro+1/Rl)/(re+(1/R+1/Ro+1/Rl))) --> 1*((1/40+1/200+1/1000)/(50+(1/40+1/200+1/1000)))
Evaluating ... ...
Vo = 0.000619615838180328
STEP 3: Convert Result to Output's Unit
0.000619615838180328 Volt --> No Conversion Required
0.000619615838180328 Volt <-- Output voltage
(Calculation completed in 00.014 seconds)

## < 6 An Emitter Follower Calculators

Output voltage of the emitter-follower
output_voltage = Input voltage*((1/Total resistance in the emitter+1/Output resistance+1/Load resistance)/(Emitter Resistance+(1/Total resistance in the emitter+1/Output resistance+1/Load resistance))) Go
Output resistance of the emitter-follower
output_resistance_of_transistor = (1/Output resistance+1/Small-signal voltage+1/Emitter Resistance)+(1/Base Impedance+1/Signal Resistance)/(Common emitter current gain+1) Go
Input resistance of the base of the emitter-follower
change_in_base_current = (Common emitter current gain+1)*(Emitter Resistance+(1/Total resistance in the emitter+1/Output resistance+1/Load resistance)) Go
Input voltage of the emitter-follower
input_voltage = Small-signal voltage*(Input resistance/(Input resistance+Signal Resistance)) Go
Input resistance of the emitter-follower
resistance_input = 1/Signal current in the base+1/Base Current Go
Overall voltage gain of the emitter-follower
overall_voltage_gain = Output voltage/Small-signal voltage Go

### Output voltage of the emitter-follower Formula

output_voltage = Input voltage*((1/Total resistance in the emitter+1/Output resistance+1/Load resistance)/(Emitter Resistance+(1/Total resistance in the emitter+1/Output resistance+1/Load resistance)))
Vo = Vi*((1/R+1/Ro+1/Rl)/(re+(1/R+1/Ro+1/Rl)))

## What is meant by emitter follower?

Emitter follower is a case of the negative current feedback circuit. This is mostly used as a last-stage amplifier in signal generator circuits. The important features of Emitter Follower are − It has high input impedance. It has low output impedance.

## How to Calculate Output voltage of the emitter-follower?

Output voltage of the emitter-follower calculator uses output_voltage = Input voltage*((1/Total resistance in the emitter+1/Output resistance+1/Load resistance)/(Emitter Resistance+(1/Total resistance in the emitter+1/Output resistance+1/Load resistance))) to calculate the Output voltage, The output voltage of the emitter-follower formula is defined as the voltage released by a device, such as a voltage regulator or a generator. Output voltage and is denoted by Vo symbol.

How to calculate Output voltage of the emitter-follower using this online calculator? To use this online calculator for Output voltage of the emitter-follower, enter Input voltage (Vi), Total resistance in the emitter (R), Output resistance (Ro), Load resistance (Rl) and Emitter Resistance (re) and hit the calculate button. Here is how the Output voltage of the emitter-follower calculation can be explained with given input values -> 0.00062 = 1*((1/40+1/200+1/1000)/(50+(1/40+1/200+1/1000))).

### FAQ

What is Output voltage of the emitter-follower?
The output voltage of the emitter-follower formula is defined as the voltage released by a device, such as a voltage regulator or a generator and is represented as Vo = Vi*((1/R+1/Ro+1/Rl)/(re+(1/R+1/Ro+1/Rl))) or output_voltage = Input voltage*((1/Total resistance in the emitter+1/Output resistance+1/Load resistance)/(Emitter Resistance+(1/Total resistance in the emitter+1/Output resistance+1/Load resistance))). Input voltage is the voltage supplied to the device, The total resistance in the emitter is the total opposition caused in the flow of current in the emitter, Output resistance is the value of resistance of the network, Load resistance is the resistance value of load given for the network and Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.
How to calculate Output voltage of the emitter-follower?
The output voltage of the emitter-follower formula is defined as the voltage released by a device, such as a voltage regulator or a generator is calculated using output_voltage = Input voltage*((1/Total resistance in the emitter+1/Output resistance+1/Load resistance)/(Emitter Resistance+(1/Total resistance in the emitter+1/Output resistance+1/Load resistance))). To calculate Output voltage of the emitter-follower, you need Input voltage (Vi), Total resistance in the emitter (R), Output resistance (Ro), Load resistance (Rl) and Emitter Resistance (re). With our tool, you need to enter the respective value for Input voltage, Total resistance in the emitter, Output resistance, Load resistance 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 Output voltage?
In this formula, Output voltage uses Input voltage, Total resistance in the emitter, Output resistance, Load resistance and Emitter Resistance. We can use 6 other way(s) to calculate the same, which is/are as follows -
• resistance_input = 1/Signal current in the base+1/Base Current
• change_in_base_current = (Common emitter current gain+1)*(Emitter Resistance+(1/Total resistance in the emitter+1/Output resistance+1/Load resistance))
• input_voltage = Small-signal voltage*(Input resistance/(Input resistance+Signal Resistance))
• output_voltage = Input voltage*((1/Total resistance in the emitter+1/Output resistance+1/Load resistance)/(Emitter Resistance+(1/Total resistance in the emitter+1/Output resistance+1/Load resistance)))
• overall_voltage_gain = Output voltage/Small-signal voltage
• output_resistance_of_transistor = (1/Output resistance+1/Small-signal voltage+1/Emitter Resistance)+(1/Base Impedance+1/Signal Resistance)/(Common emitter current gain+1)
Where is the Output voltage of the emitter-follower calculator used?
Among many, Output voltage of the emitter-follower calculator is widely used in real life applications like {FormulaUses}. Here are few more real life examples -
{FormulaExamplesList}
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