Input Voltage of Emitter Follower Solution

STEP 0: Pre-Calculation Summary
Formula Used
Emitter Voltage = Base Voltage-0.7
Ve = Vb-0.7
This formula uses 2 Variables
Variables Used
Emitter Voltage - (Measured in Volt) - Emitter voltage refers to the voltage applied to the emitter of a bipolar junction transistor or a field-effect transistor to control the flow of current between the collector and emitter terminals.
Base Voltage - (Measured in Volt) - Base Voltage refers to the voltage applied to the base of a bipolar junction transistor to control the flow of current.
STEP 1: Convert Input(s) to Base Unit
Base Voltage: 25.277 Volt --> 25.277 Volt No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Ve = Vb-0.7 --> 25.277-0.7
Evaluating ... ...
Ve = 24.577
STEP 3: Convert Result to Output's Unit
24.577 Volt --> No Conversion Required
FINAL ANSWER
24.577 Volt <-- Emitter Voltage
(Calculation completed in 00.004 seconds)

Credits

Created by Payal Priya
Birsa Institute of Technology (BIT), Sindri
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Vishwakarma Government Engineering College (VGEC), Ahmedabad
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10+ Emitter Follower Calculators

Output Resistance of Emitter Follower
Go Finite Resistance = (1/Load Resistance+1/Small Signal Voltage+1/Emitter Resistance)+(1/Base Impedance+1/Signal Resistance)/(Collector Base Current Gain+1)
Collector Current in Active Region when Transistor Acts as Amplifier
Go Collector Current = Saturation Current*e^(Voltage across Base Emitter Junction/Threshold Voltage)
Saturation Current of Emitter Follower
Go Saturation Current = Collector Current/e^(Voltage across Base Emitter Junction/Threshold Voltage)
Input Resistance of Emitter Follower
Go Input Resistance = 1/(1/Signal Resistance in Base+1/Base Resistance)
Base Resistance across Emitter follower Junction
Go Base Resistance = High Frequency Constant*Emitter Resistance
Total Emitter Resistance of Emitter Follower
Go Emitter Resistance = Base Resistance/High Frequency Constant
Output Resistance of Transistor at Intrinsic Gain
Go Finite Output Resistance = Early Voltage/Collector Current
Collector Current of Emitter Follower Transistor
Go Collector Current = Early Voltage/Finite Output Resistance
Input Resistance of Transistor Amplifier
Go Input Resistance = Amplifier Input/Input Current
Input Voltage of Emitter Follower
Go Emitter Voltage = Base Voltage-0.7

15 Multi Stage Transistor Amplifiers Calculators

Open Circuit Bipolar Cascode Voltage Gain
Go Bipolar Cascode Voltage Gain = -MOSFET Primary Transconductance*(MOSFET Secondary Transconductance*Finite Output Resistance)*(1/Finite Output Resistance of Transistor 1+1/Small Signal Input Resistance)^-1
Output Resistance of Emitter Follower
Go Finite Resistance = (1/Load Resistance+1/Small Signal Voltage+1/Emitter Resistance)+(1/Base Impedance+1/Signal Resistance)/(Collector Base Current Gain+1)
Drain Resistance of Cascode Amplifier
Go Drain Resistance = (Output Voltage Gain/(MOSFET Primary Transconductance^2*Finite Output Resistance))
Output voltage gain of MOS Cascode Amplifier
Go Output Voltage Gain = -MOSFET Primary Transconductance^2*Finite Output Resistance*Drain Resistance
Collector Current in Active Region when Transistor Acts as Amplifier
Go Collector Current = Saturation Current*e^(Voltage across Base Emitter Junction/Threshold Voltage)
Saturation Current of Emitter Follower
Go Saturation Current = Collector Current/e^(Voltage across Base Emitter Junction/Threshold Voltage)
Equivalent Resistance of Cascode Amplifier
Go Resistance between Drain and Ground = (1/Finite Output Resistance of Transistor 1+1/Input Resistance)^-1
Negative Voltage Gain of Cascode Amplifier
Go Negative Voltage Gain = -(MOSFET Primary Transconductance*Resistance between Drain and Ground)
Input Resistance of Emitter Follower
Go Input Resistance = 1/(1/Signal Resistance in Base+1/Base Resistance)
Base Resistance across Emitter follower Junction
Go Base Resistance = High Frequency Constant*Emitter Resistance
Total Emitter Resistance of Emitter Follower
Go Emitter Resistance = Base Resistance/High Frequency Constant
Output Resistance of Transistor at Intrinsic Gain
Go Finite Output Resistance = Early Voltage/Collector Current
Collector Current of Emitter Follower Transistor
Go Collector Current = Early Voltage/Finite Output Resistance
Input Resistance of Transistor Amplifier
Go Input Resistance = Amplifier Input/Input Current
Input Voltage of Emitter Follower
Go Emitter Voltage = Base Voltage-0.7

Input Voltage of Emitter Follower Formula

Emitter Voltage = Base Voltage-0.7
Ve = Vb-0.7

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 Input Voltage of Emitter Follower?

Input Voltage of Emitter Follower calculator uses Emitter Voltage = Base Voltage-0.7 to calculate the Emitter Voltage, The Input voltage of emitter follower formula is defined as voltage supplied to circuit, input voltage is supply voltage in system, Input voltage is referred to voltage needed to supply to system. Emitter Voltage is denoted by Ve symbol.

How to calculate Input Voltage of Emitter Follower using this online calculator? To use this online calculator for Input Voltage of Emitter Follower, enter Base Voltage (Vb) and hit the calculate button. Here is how the Input Voltage of Emitter Follower calculation can be explained with given input values -> 24.577 = 25.277-0.7.

FAQ

What is Input Voltage of Emitter Follower?
The Input voltage of emitter follower formula is defined as voltage supplied to circuit, input voltage is supply voltage in system, Input voltage is referred to voltage needed to supply to system and is represented as Ve = Vb-0.7 or Emitter Voltage = Base Voltage-0.7. Base Voltage refers to the voltage applied to the base of a bipolar junction transistor to control the flow of current.
How to calculate Input Voltage of Emitter Follower?
The Input voltage of emitter follower formula is defined as voltage supplied to circuit, input voltage is supply voltage in system, Input voltage is referred to voltage needed to supply to system is calculated using Emitter Voltage = Base Voltage-0.7. To calculate Input Voltage of Emitter Follower, you need Base Voltage (Vb). With our tool, you need to enter the respective value for Base Voltage and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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