Base Current of MOSFET Calculator

✖The Bias Voltage in a MOSFET circuit is the voltage that is applied to the gate of the MOSFET to turn it on.ⓘ Bias Voltage [V_bb]			+10% -10%
✖Base Emitter Voltage is the voltage drop across the base-emitter junction of a bipolar junction transistor when it is forward biased.ⓘ Base Emitter Voltage [V_be]			+10% -10%
✖The Base Resistance in a MOSFET circuit is used to limit the amount of current that flows through the base of the MOSFET.ⓘ Base Resistance [R_b]			+10% -10%

✖Input Biasing current is the current that flows into an electrical device. It is measured in amperes (A).ⓘ Base Current of MOSFET [I _base]

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Base Current of MOSFET Solution

STEP 0: Pre-Calculation Summary

Formula Used

Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance
I _base = (V_bb-V_be)/R_b
This formula uses 4 Variables

Variables Used

Input Biasing Current - (Measured in Ampere) - Input Biasing current is the current that flows into an electrical device. It is measured in amperes (A).
Bias Voltage - (Measured in Volt) - The Bias Voltage in a MOSFET circuit is the voltage that is applied to the gate of the MOSFET to turn it on.
Base Emitter Voltage - (Measured in Volt) - Base Emitter Voltage is the voltage drop across the base-emitter junction of a bipolar junction transistor when it is forward biased.
Base Resistance - (Measured in Ohm) - The Base Resistance in a MOSFET circuit is used to limit the amount of current that flows through the base of the MOSFET.

STEP 1: Convert Input(s) to Base Unit

Bias Voltage: 20 Volt --> 20 Volt No Conversion Required
Base Emitter Voltage: 10 Volt --> 10 Volt No Conversion Required
Base Resistance: 56 Kilohm --> 56000 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I _base = (V_bb-V_be)/R_b --> (20-10)/56000

Evaluating ... ...

I _base = 0.000178571428571429

STEP 3: Convert Result to Output's Unit

0.000178571428571429 Ampere -->0.178571428571429 Milliampere (Check conversion here)

FINAL ANSWER

0.178571428571429 ≈ 0.178571 Milliampere <-- Input Biasing Current

(Calculation completed in 00.004 seconds)

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Created by Suma Madhuri

VIT University (VIT), Chennai

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CVR COLLEGE OF ENGINEERING (CVR), India

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< Biasing Calculators

DC Bias Current of MOSFET

LaTeX Go DC Bias Current = 1/2*Transconductance Parameter*(Gate-Source Voltage-Threshold Voltage)^2

DC Bias Output Voltage at Drain

LaTeX Go Output Voltage = Supply Voltage-Load Resistance*DC Bias Current

DC Bias Current of MOSFET using Overdrive Voltage

LaTeX Go DC Bias Current = 1/2*Transconductance Parameter*Effective Voltage^2

Input Bias Current

LaTeX Go DC Bias Current = (Input Bias Current 1+Input Bias Current 2)/2

Base Current of MOSFET Formula

LaTeX Go

Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance
I _base = (V_bb-V_be)/R_b

Why is the base current of a MOSFET so low?

The base current of a MOSFET is so low because there is no significant flow of carriers between the gate and the other terminals of the device. The gate is typically insulated from the other terminals by a thin layer of oxide, so there is no direct path for current to flow.

How to Calculate Base Current of MOSFET?

Base Current of MOSFET calculator uses Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance to calculate 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 calculate Base Current of MOSFET using this online calculator? To use this online calculator for Base Current of MOSFET, enter Bias Voltage (V_bb), Base Emitter Voltage (V_be) & Base Resistance (R_b) and hit the calculate button. Here is how the Base Current of MOSFET calculation can be explained with given input values -> 1.8E+8 = (20-10)/56000.

FAQ

What is Base Current of MOSFET?

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 and is represented as I _base = (V_bb-V_be)/R_b or Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance. The Bias Voltage in a MOSFET circuit is the voltage that is applied to the gate of the MOSFET to turn it on, Base Emitter Voltage is the voltage drop across the base-emitter junction of a bipolar junction transistor when it is forward biased & The Base Resistance in a MOSFET circuit is used to limit the amount of current that flows through the base of the MOSFET.

How to calculate Base Current of MOSFET?

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 is calculated using Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance. To calculate Base Current of MOSFET, you need Bias Voltage (V_bb), Base Emitter Voltage (V_be) & Base Resistance (R_b). With our tool, you need to enter the respective value for Bias Voltage, Base Emitter Voltage & Base Resistance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Input Biasing Current?

In this formula, Input Biasing Current uses Bias Voltage, Base Emitter Voltage & Base Resistance. We can use 1 other way(s) to calculate the same, which is/are as follows -

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

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