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Collector Current using Emitter Current Formula

GoCollector Current of BJT Formula

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Collector current is an amplified output current of a bipolar junction transistor. Check FAQs

I c = α \cdot I e

I_c - Collector Current?α - Common-Base Current Gain?I_e - Emitter Current?

Collector Current using Emitter Current Example

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With units

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Here is how the Collector Current using Emitter Current equation looks like with Values.

Here is how the Collector Current using Emitter Current equation looks like with Units.

Here is how the Collector Current using Emitter Current equation looks like.

5.0008 = 0.985 \cdot 5.077

5.0008mA = 0.985 \cdot 5.077mA

5.0008 = 0.985 \cdot 5.077

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Collector Current using Emitter Current Solution

Follow our step by step solution on how to calculate Collector Current using Emitter Current?

FIRST Step Consider the formula

I c = α \cdot I e

Next Step Substitute values of Variables

∴

I c = 0.985 \cdot 5.077mA

Next Step Convert Units

∴

I c = 0.985 \cdot 0.0051A

Next Step Prepare to Evaluate

∴

I c = 0.985 \cdot 0.0051

Next Step Evaluate

∴

I c = 0.005000845A

Next Step Convert to Output's Unit

∴

I c = 5.000845mA

LAST Step Rounding Answer

∴

I c = 5.0008mA

Collector Current using Emitter Current Formula Elements

Variables

Collector Current

Collector current is an amplified output current of a bipolar junction transistor.

Symbol: I_c

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find Collector Current

Common-Base Current Gain

Common-base current gain α is related to β common-emitter current gain and its value is less than 1 because collector current is always less than emitter current due to recombination of electrons.

Symbol: α

Measurement: NAUnit: Unitless

Note: Value should be less than 1.

Formulas to find Common-Base Current Gain

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

Other Formulas to find Collector Current

Go Collector Current of BJT

I c = I e - I B

Other formulas in Collector 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 Collector Current using Emitter Current?

Collector Current using Emitter Current evaluator uses Collector Current = Common-Base Current Gain*Emitter Current to evaluate the Collector Current, The Collector current using Emitter Current is the current that is because of the electrons that reach the collector region. Its direction will be opposite to that of the flow of electrons, and thus into the collector terminal. Its magnitude will be proportional to e_Vbe/Vt. Collector Current is denoted by I_c symbol.

How to evaluate Collector Current using Emitter Current using this online evaluator? To use this online evaluator for Collector Current using Emitter Current, enter Common-Base Current Gain (α) & Emitter Current (I_e) and hit the calculate button.

FAQs on Collector Current using Emitter Current

What is the formula to find Collector Current using Emitter Current?

The formula of Collector Current using Emitter Current is expressed as Collector Current = Common-Base Current Gain*Emitter Current. Here is an example- 5000.845 = 0.985*0.005077.

How to calculate Collector Current using Emitter Current?

With Common-Base Current Gain (α) & Emitter Current (I_e) we can find Collector Current using Emitter Current using the formula - Collector Current = Common-Base Current Gain*Emitter Current.

What are the other ways to Calculate Collector Current?

Here are the different ways to Calculate Collector Current-

Collector Current=Emitter Current-Base Current

Can the Collector Current using Emitter Current be negative?

Yes, the Collector Current using Emitter Current, measured in Electric Current can be negative.

Which unit is used to measure Collector Current using Emitter Current?

Collector Current using 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 Collector Current using Emitter Current can be measured.

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