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Emitter Current given Base-Emitter Voltage Formula

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Emitter Current refers to the current flowing between the emitter and base terminals of the transistor when it's in operation. Check FAQs

I E = I sat \cdot (\exp (\frac{[Charge-e] \cdot V BE}{[BoltZ] \cdot t o} - 1))

I_E - Emitter Current?I_sat - Saturation Current?V_BE - Base Emitter Voltage?t_o - Temperature Impurity?[Charge-e] - Charge of electron?[BoltZ] - Boltzmann constant?

Emitter Current given Base-Emitter Voltage Example

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Here is how the Emitter Current given Base-Emitter Voltage equation looks like with Values.

Here is how the Emitter Current given Base-Emitter Voltage equation looks like with Units.

Here is how the Emitter Current given Base-Emitter Voltage equation looks like.

0.7417 = 2.015 \cdot (\exp (\frac{1.6E-19 \cdot 0.9}{1.4E-23 \cdot 20} - 1))

0.7417A = 2.015A \cdot (\exp (\frac{1.6E-19C \cdot 0.9µV}{1.4E-23J/K \cdot 20K} - 1))

0.7417 = 2.015 \cdot (\exp (\frac{1.6E-19 \cdot 0.9}{1.4E-23 \cdot 20} - 1))

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Emitter Current given Base-Emitter Voltage Solution

Follow our step by step solution on how to calculate Emitter Current given Base-Emitter Voltage?

FIRST Step Consider the formula

I E = I sat \cdot (\exp (\frac{[Charge-e] \cdot V BE}{[BoltZ] \cdot t o} - 1))

Next Step Substitute values of Variables

∴

I E = 2.015A \cdot (\exp (\frac{[Charge-e] \cdot 0.9µV}{[BoltZ] \cdot 20K} - 1))

Next Step Substitute values of Constants

∴

I E = 2.015A \cdot (\exp (\frac{1.6E-19C \cdot 0.9µV}{1.4E-23J/K \cdot 20K} - 1))

Next Step Convert Units

∴

I E = 2.015A \cdot (\exp (\frac{1.6E-19C \cdot 9E-7V}{1.4E-23J/K \cdot 20K} - 1))

Next Step Prepare to Evaluate

∴

I E = 2.015 \cdot (\exp (\frac{1.6E-19 \cdot 9E-7}{1.4E-23 \cdot 20} - 1))

Next Step Evaluate

∴

I E = 0.74166427252678A

LAST Step Rounding Answer

∴

I E = 0.7417A

Emitter Current given Base-Emitter Voltage Formula Elements

Variables

Constants

Functions

Emitter Current

Emitter Current refers to the current flowing between the emitter and base terminals of the transistor when it's in operation.

Symbol: I_E

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Emitter Current

Saturation Current

Saturation Current refers to the maximum current that can flow through the transistor when it is fully turned on.

Symbol: I_sat

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Saturation Current

Base Emitter Voltage

Base Emitter Voltage refers to the voltage drop between the base and emitter terminals of the transistor when it's in active mode.

Symbol: V_BE

Measurement: Electric PotentialUnit: µV

Note: Value should be greater than 0.

Formulas to find Base Emitter Voltage

Temperature Impurity

Temperature Impurity a base index representing the average air temperature over different timescales.

Symbol: t_o

Measurement: TemperatureUnit: K

Note: Value should be greater than 0.

Formulas to find Temperature Impurity

Charge of electron

Charge of electron is a fundamental physical constant, representing the electric charge carried by an electron, which is the elementary particle with a negative electric charge.

Symbol: [Charge-e]

Value: 1.60217662E-19 C

Boltzmann constant

Boltzmann constant relates the average kinetic energy of particles in a gas with the temperature of the gas and is a fundamental constant in statistical mechanics and thermodynamics.

Symbol: [BoltZ]

Value: 1.38064852E-23 J/K

exp

n an exponential function, the value of the function changes by a constant factor for every unit change in the independent variable.

Syntax: exp(Number)

Other formulas in Emitter Current category

Go Emitter Current using Common Emitter Current Gain

I e = (\frac{β + 1}{β}) \cdot I sat \cdot e^{\frac{V BE}{V t}}

Go Emitter Current using Collector Current and Current Gain

I e = (\frac{β + 1}{β}) \cdot I c

Go Emitter Current using Transistor Constant

I e = (\frac{I sat}{α}) \cdot e^{\frac{V BE}{V t}}

Go Emitter Current through Minority Carrier Concentration

I e = A E \cdot [Charge-e] \cdot D n \cdot (- \frac{n po}{W base})

How to Evaluate Emitter Current given Base-Emitter Voltage?

Emitter Current given Base-Emitter Voltage evaluator uses Emitter Current = Saturation Current*(exp(([Charge-e]*Base Emitter Voltage)/([BoltZ]*Temperature Impurity)-1)) to evaluate the Emitter Current, The Emitter Current given Base-Emitter Voltage formula is defined as by the Ebers-Moll equation, which describes the relationship between emitter current and saturation current. Emitter Current is denoted by I_E symbol.

How to evaluate Emitter Current given Base-Emitter Voltage using this online evaluator? To use this online evaluator for Emitter Current given Base-Emitter Voltage, enter Saturation Current (I_sat), Base Emitter Voltage (V_BE) & Temperature Impurity (t_o) and hit the calculate button.

FAQs on Emitter Current given Base-Emitter Voltage

What is the formula to find Emitter Current given Base-Emitter Voltage?

The formula of Emitter Current given Base-Emitter Voltage is expressed as Emitter Current = Saturation Current*(exp(([Charge-e]*Base Emitter Voltage)/([BoltZ]*Temperature Impurity)-1)). Here is an example- 0.736143 = 2.015*(exp(([Charge-e]*9E-07)/([BoltZ]*20)-1)).

How to calculate Emitter Current given Base-Emitter Voltage?

With Saturation Current (I_sat), Base Emitter Voltage (V_BE) & Temperature Impurity (t_o) we can find Emitter Current given Base-Emitter Voltage using the formula - Emitter Current = Saturation Current*(exp(([Charge-e]*Base Emitter Voltage)/([BoltZ]*Temperature Impurity)-1)). This formula also uses Charge of electron, Boltzmann constant and Exponential Growth (exp) function(s).

Can the Emitter Current given Base-Emitter Voltage be negative?

Yes, the Emitter Current given Base-Emitter Voltage, measured in Electric Current can be negative.

Which unit is used to measure Emitter Current given Base-Emitter Voltage?

Emitter Current given Base-Emitter Voltage is usually measured using the Ampere[A] for Electric Current. Milliampere[A], Microampere[A], Centiampere[A] are the few other units in which Emitter Current given Base-Emitter Voltage can be measured.

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