Input Biasing Current of Mosfet Calculator

✖Negative Supply Voltage is a voltage that is lower than the ground reference voltage in a circuit.ⓘ Negative Supply Voltage [V_ee]			+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%
✖Current Gain is the DC current gain of a bipolar junction transistor operating in the forward active mode.ⓘ Current Gain [β_dc]			+10% -10%
✖Emitter Resistance of a bipolar junction transistor is a resistor that is connected between the emitter terminal of the transistor and the ground or power supply rail.ⓘ Emitter Resistance [R_e]			+10% -10%

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

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Formula

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Input Biasing Current of Mosfet

Formula

`"I "_{"base"} = ("V"_{"ee"}-"V"_{"be"})/("R"_{"b"}+("β"_{"dc"}+1)*"R"_{"e"})`

Example

`"0.036181mA"=("12.25V"-"10V")/("56kΩ"+("1.21"+1)*"2.8kΩ")`

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Input Biasing Current of Mosfet Solution

STEP 0: Pre-Calculation Summary

Formula Used

Input Biasing Current = (Negative Supply Voltage-Base Emitter Voltage)/(Base Resistance+(Current Gain+1)*Emitter Resistance)
I _base = (V_ee-V_be)/(R_b+(β_dc+1)*R_e)
This formula uses 6 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).
Negative Supply Voltage - (Measured in Volt) - Negative Supply Voltage is a voltage that is lower than the ground reference voltage in a circuit.
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.
Current Gain - Current Gain is the DC current gain of a bipolar junction transistor operating in the forward active mode.
Emitter Resistance - (Measured in Ohm) - Emitter Resistance of a bipolar junction transistor is a resistor that is connected between the emitter terminal of the transistor and the ground or power supply rail.

STEP 1: Convert Input(s) to Base Unit

Negative Supply Voltage: 12.25 Volt --> 12.25 Volt No Conversion Required
Base Emitter Voltage: 10 Volt --> 10 Volt No Conversion Required
Base Resistance: 56 Kilohm --> 56000 Ohm (Check conversion here)
Current Gain: 1.21 --> No Conversion Required
Emitter Resistance: 2.8 Kilohm --> 2800 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I _base = (V_ee-V_be)/(R_b+(β_dc+1)*R_e) --> (12.25-10)/(56000+(1.21+1)*2800)

Evaluating ... ...

I _base = 3.61806136232071E-05

STEP 3: Convert Result to Output's Unit

3.61806136232071E-05 Ampere -->0.036180613623207 Milliampere (Check conversion here)

FINAL ANSWER

0.036180613623207 ≈ 0.036181 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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Chandigarh University (CU), Punjab

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< 18 Biasing Calculators

Collector Current given Current Gain Mosfet

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

Input Biasing Current of Mosfet

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

Collector Emitter Voltage given Collector Resistance

Go Collector Emitter Voltage = Collector Supply Voltage-(Collector Current+Input Biasing Current)*Collector Load Resistor

Collector Current given Current Gain

Go Collector Current = Current Gain*(Collector Supply Voltage-Base Emitter Voltage)/Base Resistance

Collector Emitter Voltage

Go Collector Emitter Voltage = Collector Supply Voltage-Collector Load Resistor*Collector Current

DC Bias Current of MOSFET

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

Collector Voltage with respect to Ground

Go Collector Voltage = Collector Supply Voltage-Collector Current*Collector Load Resistor

Emitter Voltage with respect to Ground

Go Emitter Voltage = -Negative Supply Voltage+(Emitter Current*Emitter Resistance)

Base Current of MOSFET

Go Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance

DC Bias Output Voltage at Drain

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

Collector Current in Saturation

Go Collector Current Saturation = Collector Supply Voltage/Collector Load Resistor

DC Bias Current of MOSFET using Overdrive Voltage

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

Input Bias Current

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

Bias Voltage of MOSFET

Go Total Instantaneous Bias Voltage = DC Bias Voltage+DC Voltage

Emitter Current of Mosfet

Go Emitter Current = Collector Current+Input Biasing Current

Collector Current of Mosfet

Go Collector Current = Current Gain*Input Biasing Current

Base Voltage with respect to Ground

Go Base Voltage = Emitter Voltage+Base Emitter Voltage

Bias Current in Differential Pair

Go DC Bias Current = Drain Current 1+Drain Current 2

Input Biasing Current of Mosfet Formula

Input Biasing Current = (Negative Supply Voltage-Base Emitter Voltage)/(Base Resistance+(Current Gain+1)*Emitter Resistance)
I _base = (V_ee-V_be)/(R_b+(β_dc+1)*R_e)

How can the input biasing current of a MOSFET be reduced?

There are a few ways to reduce the input biasing current of a MOSFET:

Use a low-input-bias MOSFET: Some MOSFETs are specifically designed to have a low input bias current. These MOSFETs are typically more expensive than standard MOSFETs, but they can be necessary for applications where the input bias current is critical.
Operate the MOSFET at a low gate voltage: The input bias current of a MOSFET increases with gate voltage. By operating the MOSFET at a low gate voltage, the input bias current can be reduced.

How to Calculate Input Biasing Current of Mosfet?

Input Biasing Current of Mosfet calculator uses Input Biasing Current = (Negative Supply Voltage-Base Emitter Voltage)/(Base Resistance+(Current Gain+1)*Emitter Resistance) to calculate the Input Biasing Current, The Input Biasing Current of Mosfet formula is defined as the current that flows into the gate terminal of the MOSFET in order to operate it. Input Biasing Current is denoted by I _base symbol.

How to calculate Input Biasing Current of Mosfet using this online calculator? To use this online calculator for Input Biasing Current of Mosfet, enter Negative Supply Voltage (V_ee), Base Emitter Voltage (V_be), Base Resistance (R_b), Current Gain (β_dc) & Emitter Resistance (R_e) and hit the calculate button. Here is how the Input Biasing Current of Mosfet calculation can be explained with given input values -> -156.782659 = (12.25-10)/(56000+(1.21+1)*2800).

FAQ

What is Input Biasing Current of Mosfet?

The Input Biasing Current of Mosfet formula is defined as the current that flows into the gate terminal of the MOSFET in order to operate it and is represented as I _base = (V_ee-V_be)/(R_b+(β_dc+1)*R_e) or Input Biasing Current = (Negative Supply Voltage-Base Emitter Voltage)/(Base Resistance+(Current Gain+1)*Emitter Resistance). Negative Supply Voltage is a voltage that is lower than the ground reference voltage in a circuit, 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, Current Gain is the DC current gain of a bipolar junction transistor operating in the forward active mode & Emitter Resistance of a bipolar junction transistor is a resistor that is connected between the emitter terminal of the transistor and the ground or power supply rail.

How to calculate Input Biasing Current of Mosfet?

The Input Biasing Current of Mosfet formula is defined as the current that flows into the gate terminal of the MOSFET in order to operate it is calculated using Input Biasing Current = (Negative Supply Voltage-Base Emitter Voltage)/(Base Resistance+(Current Gain+1)*Emitter Resistance). To calculate Input Biasing Current of Mosfet, you need Negative Supply Voltage (V_ee), Base Emitter Voltage (V_be), Base Resistance (R_b), Current Gain (β_dc) & Emitter Resistance (R_e). With our tool, you need to enter the respective value for Negative Supply Voltage, Base Emitter Voltage, Base Resistance, Current Gain & Emitter 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 Negative Supply Voltage, Base Emitter Voltage, Base Resistance, Current Gain & Emitter Resistance. We can use 1 other way(s) to calculate the same, which is/are as follows -

Input Biasing Current = (Bias Voltage-Base Emitter Voltage)/Base Resistance

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