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Base Current of PNP Transistor given Emitter Current Formula

GoBase Current of PNP Transistor using Collector Current Formula

GoBase Current of PNP Transistor using Common-Base Current Gain Formula

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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 e}{β + 1}

I_B - Base Current?I_e - Emitter Current?β - Common Emitter Current Gain?

Base Current of PNP Transistor given Emitter Current Example

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Here is how the Base Current of PNP Transistor given Emitter Current equation looks like with Values.

Here is how the Base Current of PNP Transistor given Emitter Current equation looks like with Units.

Here is how the Base Current of PNP Transistor given Emitter Current equation looks like.

0.0769 = \frac{5.077}{65 + 1}

0.0769mA = \frac{5.077mA}{65 + 1}

0.0769 = \frac{5.077}{65 + 1}

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Base Current of PNP Transistor given Emitter Current Solution

Follow our step by step solution on how to calculate Base Current of PNP Transistor given Emitter Current?

FIRST Step Consider the formula

I B = \frac{I e}{β + 1}

Next Step Substitute values of Variables

∴

I B = \frac{5.077mA}{65 + 1}

Next Step Convert Units

∴

I B = \frac{0.0051A}{65 + 1}

Next Step Prepare to Evaluate

∴

I B = \frac{0.0051}{65 + 1}

Next Step Evaluate

∴

I B = 7.69242424242424E-05A

Next Step Convert to Output's Unit

∴

I B = 0.0769242424242424mA

LAST Step Rounding Answer

∴

I B = 0.0769mA

Base Current of PNP Transistor given Emitter Current 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

Emitter Current

Emitter Current is the amplified output current of a bipolar junction transistor.

Symbol: I_e

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find Emitter 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

Other Formulas to find Base Current

Go Base Current of PNP Transistor using Collector Current

I B = \frac{I c}{β}

Go Base Current of PNP Transistor using Common-Base Current Gain

I B = (1 - α) \cdot I e

Go Base Current of PNP Transistor using Saturation Current

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

Other formulas in Base Current category

Go Common-Base Current Gain

α = \frac{β}{β + 1}

Go Intrinsic Gain of BJT

A o = \frac{V A}{V t}

Go Total Power Dissipated in BJT

P = V CE \cdot I c + V BE \cdot I B

Go Common Mode Rejection Ratio

CMRR = 20 \cdot \log 10 (\frac{A d}{A cm})

How to Evaluate Base Current of PNP Transistor given Emitter Current?

Base Current of PNP Transistor given Emitter Current evaluator uses Base Current = Emitter Current/(Common Emitter Current Gain+1) to evaluate the Base Current, The Base Current of PNP Transistor given Emitter Current is proportional to the number of electrons injected into the base. In a PNP transistor, the base current is carried by holes, which are minority carriers in the P-type material. When a positive voltage is applied to the base with respect to the emitter, holes from the base region are injected into the emitter region, and a current flows through the transistor. Base Current is denoted by I_B symbol.

How to evaluate Base Current of PNP Transistor given Emitter Current using this online evaluator? To use this online evaluator for Base Current of PNP Transistor given Emitter Current, enter Emitter Current (I_e) & Common Emitter Current Gain (β) and hit the calculate button.

FAQs on Base Current of PNP Transistor given Emitter Current

What is the formula to find Base Current of PNP Transistor given Emitter Current?

The formula of Base Current of PNP Transistor given Emitter Current is expressed as Base Current = Emitter Current/(Common Emitter Current Gain+1). Here is an example- 76.92424 = 0.005077/(65+1).

How to calculate Base Current of PNP Transistor given Emitter Current?

With Emitter Current (I_e) & Common Emitter Current Gain (β) we can find Base Current of PNP Transistor given Emitter Current using the formula - Base Current = Emitter Current/(Common Emitter Current Gain+1).

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=(1-Common-Base Current Gain)*Emitter Current
Base Current=(Saturation Current/Common Emitter Current Gain)*e^(Base-Emitter Voltage/Thermal Voltage)

Can the Base Current of PNP Transistor given Emitter Current be negative?

No, the Base Current of PNP Transistor given Emitter Current, measured in Electric Current cannot be negative.

Which unit is used to measure Base Current of PNP Transistor given Emitter Current?

Base Current of PNP Transistor given Emitter Current 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 of PNP Transistor given Emitter Current can be measured.

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