Capacitive Reactance of Mosfet Calculator

✖Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as temporal frequency for clarity and to distinguish it from spatial frequency.ⓘ Frequency [f]			+10% -10%
✖Capacitance is the ability of a device to store electrical energy in the form of an electric charge.ⓘ Capacitance [c]			+10% -10%

✖The Capacitive Reactance of a capacitor is inversely proportional to the frequency of the AC signal. This means that as the frequency increases, the capacitive reactance decreases.ⓘ Capacitive Reactance of Mosfet [X_c]

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Capacitive Reactance of Mosfet

Formula

`"X"_{"c"} = 1/(2*pi*"f"*"c")`

Example

`"0.002378Ω"=1/(2*pi*"14Hz"*"4.78F")`

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Capacitive Reactance of Mosfet Solution

STEP 0: Pre-Calculation Summary

Formula Used

Capacitive Reactance = 1/(2*pi*Frequency*Capacitance)
X_c = 1/(2*pi*f*c)
This formula uses 1 Constants, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Capacitive Reactance - (Measured in Ohm) - The Capacitive Reactance of a capacitor is inversely proportional to the frequency of the AC signal. This means that as the frequency increases, the capacitive reactance decreases.
Frequency - (Measured in Hertz) - Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as temporal frequency for clarity and to distinguish it from spatial frequency.
Capacitance - (Measured in Farad) - Capacitance is the ability of a device to store electrical energy in the form of an electric charge.

STEP 1: Convert Input(s) to Base Unit

Frequency: 14 Hertz --> 14 Hertz No Conversion Required
Capacitance: 4.78 Farad --> 4.78 Farad No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

X_c = 1/(2*pi*f*c) --> 1/(2*pi*14*4.78)

Evaluating ... ...

X_c = 0.00237828665708152

STEP 3: Convert Result to Output's Unit

0.00237828665708152 Ohm --> No Conversion Required

FINAL ANSWER

0.00237828665708152 ≈ 0.002378 Ohm <-- Capacitive Reactance

(Calculation completed in 00.020 seconds)

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Home » Engineering » Electronics » MOSFET » Analog Electronics » Internal Capacitive Effects and High Frequency Model » Capacitive Reactance of Mosfet

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Created by Suma Madhuri

VIT University (VIT), Chennai

Suma Madhuri has created this Calculator and 50+ more calculators!

Verified by Ritwik Tripathi

Vellore Institute of Technology (VIT Vellore), Vellore

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< 15 Internal Capacitive Effects and High Frequency Model Calculators

Conductance of Channel of MOSFETs

Go Conductance of Channel = Mobility of Electrons at Surface of Channel*Oxide Capacitance*(Channel Width/Channel Length)*Voltage across Oxide

Transition Frequency of MOSFET

Go Transition Frequency = Transconductance/(2*pi*(Source Gate Capacitance+Gate-Drain Capacitance))

Magnitude of Electron Charge in Channel of MOSFET

Go Electron Charge in Channel = Oxide Capacitance*Channel Width*Channel Length*Effective Voltage

Lower Critical Frequency of Mosfet

Go Corner Frequency = 1/(2*pi*(Resistance+Input Resistance)*Capacitance)

Phase Shift in Output RC Circuit

Go Phase Shift = arctan(Capacitive Reactance/(Resistance+Load Resistance))

Output Miller Capacitance Mosfet

Go Output Miller Capacitance = Gate-Drain Capacitance*((Voltage Gain+1)/Voltage Gain)

Total Capacitance between Gate and Channel of MOSFETs

Go Gate Channel Capacitance = Oxide Capacitance*Channel Width*Channel Length

Gate to Source Channel Width of MOSFET

Go Channel Width = Overlap Capacitance/(Oxide Capacitance*Overlap Length)

Overlap Capacitance of MOSFET

Go Overlap Capacitance = Channel Width*Oxide Capacitance*Overlap Length

Critical Frequency in High Frequency Input RC Circuit

Go Corner Frequency = 1/(2*pi*Input Resistance*Miller Capacitance)

Phase Shift in Input RC Circuit

Go Phase Shift = arctan(Capacitive Reactance/Input Resistance)

Capacitive Reactance of Mosfet

Go Capacitive Reactance = 1/(2*pi*Frequency*Capacitance)

Critical Frequency of Mosfet

Go Critical Frequency in decibles = 10*log10(Critical Frequency)

Miller Capacitance of Mosfet

Go Miller Capacitance = Gate-Drain Capacitance*(Voltage Gain+1)

Attenuation of RC Circuit

Go Attenuation = Base Voltage/Input Voltage

Capacitive Reactance of Mosfet Formula

Capacitive Reactance = 1/(2*pi*Frequency*Capacitance)
X_c = 1/(2*pi*f*c)

What are the implications of the capacitive reactance of a MOSFET for high-frequency circuit design?

The capacitive reactance of a MOSFET has a significant impact on the performance of high-frequency circuits. It can cause the following problems:

Reduced gain: The capacitive reactance of a MOSFET acts as a voltage divider, which reduces the voltage gain of the circuit.
Narrowed bandwidth: The capacitive reactance of a MOSFET can cause the bandwidth of the circuit to narrow, which can limit the range of frequencies that the circuit can amplify.

How to Calculate Capacitive Reactance of Mosfet?

Capacitive Reactance of Mosfet calculator uses Capacitive Reactance = 1/(2*pi*Frequency*Capacitance) to calculate the Capacitive Reactance, The Capacitive Reactance of Mosfet formula is defined as the opposition that the MOSFET's internal capacitances offer to alternating current (AC). It is a measure of how difficult it is for AC current to flow through the MOSFET. Capacitive Reactance is denoted by X_c symbol.

How to calculate Capacitive Reactance of Mosfet using this online calculator? To use this online calculator for Capacitive Reactance of Mosfet, enter Frequency (f) & Capacitance (c) and hit the calculate button. Here is how the Capacitive Reactance of Mosfet calculation can be explained with given input values -> 0.002378 = 1/(2*pi*14*4.78).

FAQ

What is Capacitive Reactance of Mosfet?

The Capacitive Reactance of Mosfet formula is defined as the opposition that the MOSFET's internal capacitances offer to alternating current (AC). It is a measure of how difficult it is for AC current to flow through the MOSFET and is represented as X_c = 1/(2*pi*f*c) or Capacitive Reactance = 1/(2*pi*Frequency*Capacitance). Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as temporal frequency for clarity and to distinguish it from spatial frequency & Capacitance is the ability of a device to store electrical energy in the form of an electric charge.

How to calculate Capacitive Reactance of Mosfet?

The Capacitive Reactance of Mosfet formula is defined as the opposition that the MOSFET's internal capacitances offer to alternating current (AC). It is a measure of how difficult it is for AC current to flow through the MOSFET is calculated using Capacitive Reactance = 1/(2*pi*Frequency*Capacitance). To calculate Capacitive Reactance of Mosfet, you need Frequency (f) & Capacitance (c). With our tool, you need to enter the respective value for Frequency & Capacitance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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