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Collector Current of Emitter Follower Transistor Formula

GoCollector Current in Active Region when Transistor Acts as Amplifier Formula

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

i c = \frac{V a'}{R out}

i_c - Collector Current?V_a' - Early Voltage?R_out - Finite Output Resistance?

Collector Current of Emitter Follower Transistor Example

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Here is how the Collector Current of Emitter Follower Transistor equation looks like with Values.

Here is how the Collector Current of Emitter Follower Transistor equation looks like with Units.

Here is how the Collector Current of Emitter Follower Transistor equation looks like.

39.5714 = \frac{13.85}{0.35}

39.5714mA = \frac{13.85V/m}{0.35kΩ}

39.5714 = \frac{13.85}{0.35}

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Collector Current of Emitter Follower Transistor Solution

Follow our step by step solution on how to calculate Collector Current of Emitter Follower Transistor?

FIRST Step Consider the formula

i c = \frac{V a'}{R out}

Next Step Substitute values of Variables

∴

i c = \frac{13.85V/m}{0.35kΩ}

Next Step Convert Units

∴

i c = \frac{13.85V/m}{350Ω}

Next Step Prepare to Evaluate

∴

i c = \frac{13.85}{350}

Next Step Evaluate

∴

i c = 0.0395714285714286A

Next Step Convert to Output's Unit

∴

i c = 39.5714285714286mA

LAST Step Rounding Answer

∴

i c = 39.5714mA

Collector Current of Emitter Follower Transistor 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 should be greater than 0.

Formulas to find Collector Current

Early Voltage

Early voltage is entirely process-technology dependent, with the dimensions of volts per micron.Typically, V; falls in the range of 5 V/μm to 50 V/μm.

Symbol: V_a'

Measurement: Electric Field StrengthUnit: V/m

Note: Value should be greater than 0.

Formulas to find Early Voltage

Finite Output Resistance

The finite output resistance is a measure of how much the transistor's output impedance varies with changes in the output voltage.

Symbol: R_out

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Formulas to find Finite Output Resistance

Other Formulas to find Collector Current

Go Collector Current in Active Region when Transistor Acts as Amplifier

i c = i s \cdot e^{\frac{V be}{V t}}

Other formulas in Emitter Follower category

Go Drain Resistance of Cascode Amplifier

R d = (\frac{A vo}{{g mp}^{2} \cdot R out})

Go Equivalent Resistance of Cascode Amplifier

R dg = {(\frac{1}{R out1} + \frac{1}{R in})}^{- 1}

Go Open Circuit Bipolar Cascode Voltage Gain

A fo = - g mp \cdot (g ms \cdot R out) \cdot {(\frac{1}{R out1} + \frac{1}{R sm})}^{- 1}

Go Output voltage gain of MOS Cascode Amplifier

A vo = - {g mp}^{2} \cdot R out \cdot R d

How to Evaluate Collector Current of Emitter Follower Transistor?

Collector Current of Emitter Follower Transistor evaluator uses Collector Current = Early Voltage/Finite Output Resistance to evaluate the Collector Current, Collector Current of Emitter Follower Transistor refers to the flow of current from the collector (base) to the emitter (source) through the base-emitter junction. Collector Current is denoted by i_c symbol.

How to evaluate Collector Current of Emitter Follower Transistor using this online evaluator? To use this online evaluator for Collector Current of Emitter Follower Transistor, enter Early Voltage (V_a') & Finite Output Resistance (R_out) and hit the calculate button.

FAQs on Collector Current of Emitter Follower Transistor

What is the formula to find Collector Current of Emitter Follower Transistor?

The formula of Collector Current of Emitter Follower Transistor is expressed as Collector Current = Early Voltage/Finite Output Resistance. Here is an example- 40000 = 13.85/350.

How to calculate Collector Current of Emitter Follower Transistor?

With Early Voltage (V_a') & Finite Output Resistance (R_out) we can find Collector Current of Emitter Follower Transistor using the formula - Collector Current = Early Voltage/Finite Output Resistance.

What are the other ways to Calculate Collector Current?

Here are the different ways to Calculate Collector Current-

Collector Current=Saturation Current*e^(Voltage across Base Emitter Junction/Threshold Voltage)

Can the Collector Current of Emitter Follower Transistor be negative?

No, the Collector Current of Emitter Follower Transistor, measured in Electric Current cannot be negative.

Which unit is used to measure Collector Current of Emitter Follower Transistor?

Collector Current of Emitter Follower Transistor 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 of Emitter Follower Transistor can be measured.

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Collector Current of Emitter Follower Transistor Formula

​GoCollector Current in Active Region when Transistor Acts as Amplifier Formula

Collector Current of Emitter Follower Transistor Example

Collector Current of Emitter Follower Transistor Solution

Collector Current of Emitter Follower Transistor Formula Elements

Other Formulas to find Collector Current

Other formulas in Emitter Follower category

How to Evaluate Collector Current of Emitter Follower Transistor?

FAQs on Collector Current of Emitter Follower Transistor

Variable Name

GoCollector Current in Active Region when Transistor Acts as Amplifier Formula