FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Base Current 2 of BJT Formula

GoBase Current 1 of BJT Formula

GoBase Current using Saturation Current in DC Formula

Fx Copy

LaTeX Copy

Base Current is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on. Check FAQs

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

I_B - Base Current?I_sat - Saturation Current?β - Common Emitter Current Gain?V_BE - Base-Emitter Voltage?V_t - Thermal Voltage?

Base Current 2 of BJT Example

With values

With units

Only example

Here is how the Base Current 2 of BJT equation looks like with Values.

Here is how the Base Current 2 of BJT equation looks like with Units.

Here is how the Base Current 2 of BJT equation looks like.

0.0771 = (\frac{1.675}{65}) \cdot (e^{\frac{5.15}{4.7}})

0.0771mA = (\frac{1.675mA}{65}) \cdot (e^{\frac{5.15V}{4.7V}})

0.0771 = (\frac{1.675}{65}) \cdot (e^{\frac{5.15}{4.7}})

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electronics » Category

Analog Electronics » fx Base Current 2 of BJT

Base Current 2 of BJT Solution

Follow our step by step solution on how to calculate Base Current 2 of BJT?

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

I B = (\frac{1.675mA}{65}) \cdot (e^{\frac{5.15V}{4.7V}})

Next Step Convert Units

∴

I B = (\frac{0.0017A}{65}) \cdot (e^{\frac{5.15V}{4.7V}})

Next Step Prepare to Evaluate

∴

I B = (\frac{0.0017}{65}) \cdot (e^{\frac{5.15}{4.7}})

Next Step Evaluate

∴

I B = 7.70863217186262E-05A

Next Step Convert to Output's Unit

∴

I B = 0.0770863217186262mA

LAST Step Rounding Answer

∴

I B = 0.0771mA

Base Current 2 of BJT Formula Elements

Variables

Base Current

Base Current is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.

Symbol: I_B

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Base Current

Saturation Current

Saturation Current is the diode leakage current density in the absence of light. It is an important parameter which differentiates one diode from another.

Symbol: I_sat

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Saturation Current

Common Emitter Current Gain

Common emitter current gain is influenced by 2 factors: width of base region W, and relative dopings of base region and emitter region. Its range varies from 50-200.

Symbol: β

Measurement: NAUnit: Unitless

Note: Value should be between 49 to 201.

Formulas to find Common Emitter Current Gain

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 to find Base Current

Go Base Current 1 of BJT

I B = \frac{I c}{β}

Go Base Current using Saturation Current in DC

I B = (\frac{I sat}{β}) \cdot e^{\frac{V BC}{V t}} + e s \cdot e^{\frac{V BC}{V t}}

Go Total Base Current

I B = I B1 + I B2

Go Base Current of PNP Transistor using Collector Current

I B = \frac{I c}{β}

Other formulas in Base Current category

Go Drain Current given Device Parameter

I d = \frac{1}{2} \cdot G m \cdot WL \cdot {(V ov - V th)}^{2} \cdot (1 + V A \cdot V DS)

Go Reference Current of BJT Current Mirror

I ref = \frac{V DD - V BE}{R}

Go Reference Current of BJT Mirror given Collector Current

I ref = I c \cdot (1 + \frac{2}{β})

Go Saturation Current using Doping Concentration

I sat = \frac{A E \cdot [Charge-e] \cdot D n \cdot {(n i1)}^{2}}{W base \cdot N B}

How to Evaluate Base Current 2 of BJT?

Base Current 2 of BJT evaluator uses Base Current = (Saturation Current/Common Emitter Current Gain)*(e^(Base-Emitter Voltage/Thermal Voltage)) to evaluate the Base Current, The Base Current 2 of BJT is proportional to the number of electrons injected into the base. Base Current is denoted by I_B symbol.

How to evaluate Base Current 2 of BJT using this online evaluator? To use this online evaluator for Base Current 2 of BJT, enter Saturation Current (I_sat), Common Emitter Current Gain (β), Base-Emitter Voltage (V_BE) & Thermal Voltage (V_t) and hit the calculate button.

FAQs on Base Current 2 of BJT

What is the formula to find Base Current 2 of BJT?

The formula of Base Current 2 of BJT is expressed as Base Current = (Saturation Current/Common Emitter Current Gain)*(e^(Base-Emitter Voltage/Thermal Voltage)). Here is an example- 77.08632 = (0.001675/65)*(e^(5.15/4.7)).

How to calculate Base Current 2 of BJT?

With Saturation Current (I_sat), Common Emitter Current Gain (β), Base-Emitter Voltage (V_BE) & Thermal Voltage (V_t) we can find Base Current 2 of BJT using the formula - Base Current = (Saturation Current/Common Emitter Current Gain)*(e^(Base-Emitter Voltage/Thermal Voltage)).

What are the other ways to Calculate Base Current?

Here are the different ways to Calculate Base Current-

Base Current=Collector Current/Common Emitter Current Gain
Base Current=(Saturation Current/Common Emitter Current Gain)*e^(Base-Collector Voltage/Thermal Voltage)+Saturation Vapour Pressure*e^(Base-Collector Voltage/Thermal Voltage)
Base Current=Base Current 1+Base Current 2

Can the Base Current 2 of BJT be negative?

No, the Base Current 2 of BJT, measured in Electric Current cannot be negative.

Which unit is used to measure Base Current 2 of BJT?

Base Current 2 of BJT is usually measured using the Milliampere[mA] for Electric Current. Ampere[mA], Microampere[mA], Centiampere[mA] are the few other units in which Base Current 2 of BJT can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!