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Base Current of MOSFET Formula

GoInput Biasing Current of Mosfet Formula

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Input Biasing current is the current that flows into an electrical device. It is measured in amperes (A). Check FAQs

I base = \frac{V bb - V be}{R b}

I _base - Input Biasing Current?V_bb - Bias Voltage?V_be - Base Emitter Voltage?R_b - Base Resistance?

Base Current of MOSFET Example

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

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

Here is how the Base Current of MOSFET equation looks like.

0.1786 = \frac{20 - 10}{56}

0.1786mA = \frac{20V - 10V}{56kΩ}

0.1786 = \frac{20 - 10}{56}

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Base Current of MOSFET Solution

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

FIRST Step Consider the formula

I base = \frac{V bb - V be}{R b}

Next Step Substitute values of Variables

∴

I base = \frac{20V - 10V}{56kΩ}

Next Step Convert Units

∴

I base = \frac{20V - 10V}{56000Ω}

Next Step Prepare to Evaluate

∴

I base = \frac{20 - 10}{56000}

Next Step Evaluate

∴

I base = 0.000178571428571429A

Next Step Convert to Output's Unit

∴

I base = 0.178571428571429mA

LAST Step Rounding Answer

∴

I base = 0.1786mA

Base Current of MOSFET Formula Elements

Variables

Input Biasing Current

Input Biasing current is the current that flows into an electrical device. It is measured in amperes (A).

Symbol: I _base

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Input Biasing Current

Bias Voltage

The Bias Voltage in a MOSFET circuit is the voltage that is applied to the gate of the MOSFET to turn it on.

Symbol: V_bb

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Bias Voltage

Base Emitter Voltage

Base Emitter Voltage is the voltage drop across the base-emitter junction of a bipolar junction transistor when it is forward biased.

Symbol: V_be

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Base Emitter Voltage

Base Resistance

The Base Resistance in a MOSFET circuit is used to limit the amount of current that flows through the base of the MOSFET.

Symbol: R_b

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Formulas to find Base Resistance

Other Formulas to find Input Biasing Current

Go Input Biasing Current of Mosfet

I base = \frac{V ee - V be}{R b + (β dc + 1) \cdot R e}

Other formulas in Biasing category

Go DC Bias Current of MOSFET using Overdrive Voltage

I b = \frac{1}{2} \cdot k n \cdot {V eff}^{2}

Go Input Bias Current

I b = \frac{I b1 + I b2}{2}

Go DC Bias Current of MOSFET

I b = \frac{1}{2} \cdot k n \cdot {(V gs - V th)}^{2}

Go DC Bias Output Voltage at Drain

V out = V dd - R L \cdot I b

How to Evaluate Base Current of MOSFET?

Base Current of MOSFET evaluator uses Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance to evaluate the Input Biasing Current, The Base Current of MOSFET formula is defined as current that flows into the base terminal of the MOSFET. A small increase in base current can cause a large increase in drain-source current. Input Biasing Current is denoted by I _base symbol.

How to evaluate Base Current of MOSFET using this online evaluator? To use this online evaluator for Base Current of MOSFET, enter Bias Voltage (V_bb), Base Emitter Voltage (V_be) & Base Resistance (R_b) and hit the calculate button.

FAQs on Base Current of MOSFET

What is the formula to find Base Current of MOSFET?

The formula of Base Current of MOSFET is expressed as Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance. Here is an example- 1.8E+8 = (20-10)/56000.

How to calculate Base Current of MOSFET?

With Bias Voltage (V_bb), Base Emitter Voltage (V_be) & Base Resistance (R_b) we can find Base Current of MOSFET using the formula - Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance.

What are the other ways to Calculate Input Biasing Current?

Here are the different ways to Calculate Input Biasing Current-

Input Biasing Current=(Negative Supply Voltage-Base Emitter Voltage)/(Base Resistance+(Current Gain+1)*Emitter Resistance)

Can the Base Current of MOSFET be negative?

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

Which unit is used to measure Base Current of MOSFET?

Base Current of MOSFET 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 MOSFET can be measured.

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Base Current of MOSFET Formula

​GoInput Biasing Current of Mosfet Formula

Base Current of MOSFET Example

Base Current of MOSFET Solution

Base Current of MOSFET Formula Elements

Other Formulas to find Input Biasing Current

Other formulas in Biasing category

How to Evaluate Base Current of MOSFET?

FAQs on Base Current of MOSFET

Variable Name

GoInput Biasing Current of Mosfet Formula