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Concentration of Electrons Injected from Emitter to Base Formula

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The concentration of e- injected from emitter to base is the number of electrons passed from emitter to the base. Check FAQs

N p = n po \cdot e^{\frac{V BE}{V t}}

N_p - Concentration of e- Injected from Emitter to Base?n_po - Thermal Equilibrium Concentration?V_BE - Base-Emitter Voltage?V_t - Thermal Voltage?

Concentration of Electrons Injected from Emitter to Base Example

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Here is how the Concentration of Electrons Injected from Emitter to Base equation looks like with Values.

Here is how the Concentration of Electrons Injected from Emitter to Base equation looks like with Units.

Here is how the Concentration of Electrons Injected from Emitter to Base equation looks like.

3E+18 = 1E+18 \cdot e^{\frac{5.15}{4.7}}

3E+181/m³ = 1E+181/m³ \cdot e^{\frac{5.15V}{4.7V}}

3E+18 = 1E+18 \cdot e^{\frac{5.15}{4.7}}

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Concentration of Electrons Injected from Emitter to Base Solution

Follow our step by step solution on how to calculate Concentration of Electrons Injected from Emitter to Base?

FIRST Step Consider the formula

N p = n po \cdot e^{\frac{V BE}{V t}}

Next Step Substitute values of Variables

∴

N p = 1E+181/m³ \cdot e^{\frac{5.15V}{4.7V}}

Next Step Prepare to Evaluate

∴

N p = 1E+18 \cdot e^{\frac{5.15}{4.7}}

Next Step Evaluate

∴

N p = 2.99140949952878E+181/m³

LAST Step Rounding Answer

∴

N p = 3E+181/m³

Concentration of Electrons Injected from Emitter to Base Formula Elements

Variables

Concentration of e- Injected from Emitter to Base

The concentration of e- injected from emitter to base is the number of electrons passed from emitter to the base.

Symbol: N_p

Measurement: Carrier ConcentrationUnit: 1/m³

Note: Value should be greater than 0.

Formulas to find Concentration of e- Injected from Emitter to Base

Thermal Equilibrium Concentration

Thermal Equilibrium Concentration is defined as the concentration of carriers in an amplifier.

Symbol: n_po

Measurement: Carrier ConcentrationUnit: 1/m³

Note: Value should be greater than 0.

Formulas to find Thermal Equilibrium Concentration

Base-Emitter Voltage

Base-Emitter Voltage is the forward voltage between the base and emitter of the transistor.

Symbol: V_BE

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Base-Emitter Voltage

Thermal Voltage

Thermal Voltage is the voltage produced within the p-n junction.

Symbol: V_t

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Thermal Voltage

Other formulas in Internal Capacitive Effects and High Frequency Model category

Go Stored Electron Charge in Base of BJT

Q n = 𝛕 F \cdot I c

Go Small-Signal Diffusion Capacitance

C eb = 𝛕 F \cdot G m

Go Small-Signal Diffusion Capacitance of BJT

C eb = 𝛕 F \cdot (\frac{I c}{V th})

Go Base-Emitter Junction Capacitance

C = 2 \cdot C eb

How to Evaluate Concentration of Electrons Injected from Emitter to Base?

Concentration of Electrons Injected from Emitter to Base evaluator uses Concentration of e- Injected from Emitter to Base = Thermal Equilibrium Concentration*e^(Base-Emitter Voltage/Thermal Voltage) to evaluate the Concentration of e- Injected from Emitter to Base, The concentration of electrons injected from emitter to base is the number of electrons that is transferred from the emitter region of the transistor to the base region of the transistor. Concentration of e- Injected from Emitter to Base is denoted by N_p symbol.

How to evaluate Concentration of Electrons Injected from Emitter to Base using this online evaluator? To use this online evaluator for Concentration of Electrons Injected from Emitter to Base, enter Thermal Equilibrium Concentration (n_po), Base-Emitter Voltage (V_BE) & Thermal Voltage (V_t) and hit the calculate button.

FAQs on Concentration of Electrons Injected from Emitter to Base

What is the formula to find Concentration of Electrons Injected from Emitter to Base?

The formula of Concentration of Electrons Injected from Emitter to Base is expressed as Concentration of e- Injected from Emitter to Base = Thermal Equilibrium Concentration*e^(Base-Emitter Voltage/Thermal Voltage). Here is an example- 3E+18 = 1E+18*e^(5.15/4.7).

How to calculate Concentration of Electrons Injected from Emitter to Base?

With Thermal Equilibrium Concentration (n_po), Base-Emitter Voltage (V_BE) & Thermal Voltage (V_t) we can find Concentration of Electrons Injected from Emitter to Base using the formula - Concentration of e- Injected from Emitter to Base = Thermal Equilibrium Concentration*e^(Base-Emitter Voltage/Thermal Voltage).

Can the Concentration of Electrons Injected from Emitter to Base be negative?

No, the Concentration of Electrons Injected from Emitter to Base, measured in Carrier Concentration cannot be negative.

Which unit is used to measure Concentration of Electrons Injected from Emitter to Base?

Concentration of Electrons Injected from Emitter to Base is usually measured using the 1 per Cubic Meter[1/m³] for Carrier Concentration. 1 per Cubic Centimeter[1/m³], per Liter[1/m³] are the few other units in which Concentration of Electrons Injected from Emitter to Base can be measured.

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