Base Resistance across Emitter follower Junction Calculator

✖High Frequency Constant refers to a fixed resistance value that is used to define the input impedance of the amplifier.ⓘ High Frequency Constant [h_fc]			+10% -10%
✖Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.ⓘ Emitter Resistance [R_e]			+10% -10%

✖Base resistance is a measure of the opposition to current flow in an electrical circuit.ⓘ Base Resistance across Emitter follower Junction [R_b]

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Formula

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Base Resistance across Emitter follower Junction

Formula

`"R"_{"b"} = "h"_{"fc"}*"R"_{"e"}`

Example

`"1.13163kΩ"="16.89"*"0.067kΩ"`

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Base Resistance across Emitter follower Junction Solution

STEP 0: Pre-Calculation Summary

Formula Used

Base Resistance = High Frequency Constant*Emitter Resistance
R_b = h_fc*R_e
This formula uses 3 Variables

Variables Used

Base Resistance - (Measured in Ohm) - Base resistance is a measure of the opposition to current flow in an electrical circuit.
High Frequency Constant - High Frequency Constant refers to a fixed resistance value that is used to define the input impedance of the amplifier.
Emitter Resistance - (Measured in Ohm) - Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.

STEP 1: Convert Input(s) to Base Unit

High Frequency Constant: 16.89 --> No Conversion Required
Emitter Resistance: 0.067 Kilohm --> 67 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_b = h_fc*R_e --> 16.89*67

Evaluating ... ...

R_b = 1131.63

STEP 3: Convert Result to Output's Unit

1131.63 Ohm -->1.13163 Kilohm (Check conversion here)

FINAL ANSWER

1.13163 Kilohm <-- Base Resistance

(Calculation completed in 00.004 seconds)

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Credits

Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has created this Calculator and 600+ more calculators!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has verified this Calculator and 1900+ more calculators!

< 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

Base Resistance across Emitter follower Junction Formula

Base Resistance = High Frequency Constant*Emitter Resistance
R_b = h_fc*R_e

What is meant by emitter follower?

An emitter follower, a type of transistor circuit, serves as a buffer between input and output, maintaining the same voltage but with higher current capability, offering impedance matching and signal isolation in electronic circuits.

How to Calculate Base Resistance across Emitter follower Junction?

Base Resistance across Emitter follower Junction calculator uses Base Resistance = High Frequency Constant*Emitter Resistance to calculate the Base Resistance, Base Resistance across Emitter follower Junction refers to the opposition an emitter base provides to the flow of current in a bipolar junction transistor (BJT). It is measured in Ohms and is an important parameter in determining the transistor's current gain and switching speed. Base Resistance is denoted by R_b symbol.

How to calculate Base Resistance across Emitter follower Junction using this online calculator? To use this online calculator for Base Resistance across Emitter follower Junction, enter High Frequency Constant (h_fc) & Emitter Resistance (R_e) and hit the calculate button. Here is how the Base Resistance across Emitter follower Junction calculation can be explained with given input values -> 0.011792 = 16.89*67.

FAQ

What is Base Resistance across Emitter follower Junction?

Base Resistance across Emitter follower Junction refers to the opposition an emitter base provides to the flow of current in a bipolar junction transistor (BJT). It is measured in Ohms and is an important parameter in determining the transistor's current gain and switching speed and is represented as R_b = h_fc*R_e or Base Resistance = High Frequency Constant*Emitter Resistance. High Frequency Constant refers to a fixed resistance value that is used to define the input impedance of the amplifier & Emitter Resistance is a dynamic resistance of the emitter-base junction diode of a transistor.

How to calculate Base Resistance across Emitter follower Junction?

Base Resistance across Emitter follower Junction refers to the opposition an emitter base provides to the flow of current in a bipolar junction transistor (BJT). It is measured in Ohms and is an important parameter in determining the transistor's current gain and switching speed is calculated using Base Resistance = High Frequency Constant*Emitter Resistance. To calculate Base Resistance across Emitter follower Junction, you need High Frequency Constant (h_fc) & Emitter Resistance (R_e). With our tool, you need to enter the respective value for High Frequency Constant & Emitter Resistance 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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