Input Current of Small Signal Calculator

✖Critical Voltage is the minimum phase to the neutral voltage which glows and appears all along the line conductor.ⓘ Critical Voltage [V_c]			+10% -10%
✖Transconductance is defined as the ratio of the change in the output current to the change in the input voltage, with the gate-source voltage held constant.ⓘ Transconductance [g_m]			+10% -10%
✖Self Induced Resistance is the internal resistance that occurs due to the presence of the FET's own charge carriers (electrons or holes).ⓘ Self Induced Resistance [R_si]			+10% -10%

✖Input current of small signal refers to the amount of current flowing through a circuit or device when a small signal is applied to it.ⓘ Input Current of Small Signal [i_in]

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Formula

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Input Current of Small Signal

Formula

`"i"_{"in"} = ("V"_{"c"}*((1+"g"_{"m"}*"R"_{"si"})/"R"_{"si"}))`

Example

`"0.000162A"=("0.284V"*((1+"0.5mS"*"14.3kΩ")/"14.3kΩ"))`

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Input Current of Small Signal Solution

STEP 0: Pre-Calculation Summary

Formula Used

Input Current Of Small Signal = (Critical Voltage*((1+Transconductance*Self Induced Resistance)/Self Induced Resistance))
i_in = (V_c*((1+g_m*R_si)/R_si))
This formula uses 4 Variables

Variables Used

Input Current Of Small Signal - (Measured in Ampere) - Input current of small signal refers to the amount of current flowing through a circuit or device when a small signal is applied to it.
Critical Voltage - (Measured in Volt) - Critical Voltage is the minimum phase to the neutral voltage which glows and appears all along the line conductor.
Transconductance - (Measured in Siemens) - Transconductance is defined as the ratio of the change in the output current to the change in the input voltage, with the gate-source voltage held constant.
Self Induced Resistance - (Measured in Ohm) - Self Induced Resistance is the internal resistance that occurs due to the presence of the FET's own charge carriers (electrons or holes).

STEP 1: Convert Input(s) to Base Unit

Critical Voltage: 0.284 Volt --> 0.284 Volt No Conversion Required
Transconductance: 0.5 Millisiemens --> 0.0005 Siemens (Check conversion here)
Self Induced Resistance: 14.3 Kilohm --> 14300 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

i_in = (V_c*((1+g_m*R_si)/R_si)) --> (0.284*((1+0.0005*14300)/14300))

Evaluating ... ...

i_in = 0.00016186013986014

STEP 3: Convert Result to Output's Unit

0.00016186013986014 Ampere --> No Conversion Required

FINAL ANSWER

0.00016186013986014 ≈ 0.000162 Ampere <-- Input Current Of Small Signal

(Calculation completed in 00.004 seconds)

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Created by Ritwik Tripathi

Vellore Institute of Technology (VIT Vellore), Vellore

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Chandigarh University (CU), Punjab

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< 15 Small Signal Analysis Calculators

Small Signal Voltage Gain with respect to Input Resistance

Go Voltage Gain = (Input Amplifier Resistance/(Input Amplifier Resistance+Self Induced Resistance))*((Source Resistance*Output Resistance)/(Source Resistance+Output Resistance))/(1/Transconductance+((Source Resistance*Output Resistance)/(Source Resistance+Output Resistance)))

Gate to Source Voltage with respect to Small Signal Resistance

Go Critical Voltage = Input Voltage*((1/Transconductance)/((1/Transconductance)*((Source Resistance*Small Signal Resistance)/(Source Resistance+Small Signal Resistance))))

Common Drain Output Voltage in Small Signal

Go Output Voltage = Transconductance*Critical Voltage*((Source Resistance*Small Signal Resistance)/(Source Resistance+Small Signal Resistance))

Output Voltage of Small Signal P-Channel

Go Output Voltage = Transconductance*Source to Gate Voltage*((Output Resistance*Drain Resistance)/(Drain Resistance+Output Resistance))

Voltage Gain for Small Signal

Go Voltage Gain = (Transconductance*(1/((1/Load Resistance)+(1/Drain Resistance))))/(1+(Transconductance*Self Induced Resistance))

Small-Signal Voltage Gain with respect to Drain Resistance

Go Voltage Gain = (Transconductance*((Output Resistance*Drain Resistance)/(Output Resistance+Drain Resistance)))

Output Current of Small Signal

Go Output Current = (Transconductance*Critical Voltage)*(Drain Resistance/(Load Resistance+Drain Resistance))

Input Current of Small Signal

Go Input Current Of Small Signal = (Critical Voltage*((1+Transconductance*Self Induced Resistance)/Self Induced Resistance))

Amplification Factor for Small Signal MOSFET Model

Go Amplification Factor = 1/Electron Mean Free Path*sqrt((2*Process Transconductance Parameter)/Drain Current)

Transconductance Given Small Signal Parameters

Go Transconductance = 2*Transconductance Parameter*(DC Component of Gate to Source Voltage-Total Voltage)

Gate to Source Voltage in Small Signal

Go Critical Voltage = Input Voltage/(1+Self Induced Resistance*Transconductance)

Voltage Gain using Small Signal

Go Voltage Gain = Transconductance*1/(1/Load Resistance+1/Finite Resistance)

Small Signal Output Voltage

Go Output Voltage = Transconductance*Source to Gate Voltage*Load Resistance

Drain Current of MOSFET Small Signal

Go Drain Current = 1/(Electron Mean Free Path*Output Resistance)

Amplification Factor in Small Signal MOSFET Model

Go Amplification Factor = Transconductance*Output Resistance

Input Current of Small Signal Formula

Input Current Of Small Signal = (Critical Voltage*((1+Transconductance*Self Induced Resistance)/Self Induced Resistance))
i_in = (V_c*((1+g_m*R_si)/R_si))

What is small signal analysis?

Small signal analysis is a method used in signal processing to analyze signals with small signal levels, typically in the range of -60 dB to -90 dB relative to a reference level. This technique is useful for detecting and processing weak signals in noise, such as those encountered in telecommunications, audio processing, and biomedical signal processing.

How to Calculate Input Current of Small Signal?

Input Current of Small Signal calculator uses Input Current Of Small Signal = (Critical Voltage*((1+Transconductance*Self Induced Resistance)/Self Induced Resistance)) to calculate the Input Current Of Small Signal, The Input Current Of Small Signal formula is defined as the current flowing into the input stage of the amplifier. It is a critical parameter in determining the amplifier's performance. Input Current Of Small Signal is denoted by i_in symbol.

How to calculate Input Current of Small Signal using this online calculator? To use this online calculator for Input Current of Small Signal, enter Critical Voltage (V_c), Transconductance (g_m) & Self Induced Resistance (R_si) and hit the calculate button. Here is how the Input Current of Small Signal calculation can be explained with given input values -> 0.000162 = (0.284*((1+0.0005*14300)/14300)).

FAQ

What is Input Current of Small Signal?

The Input Current Of Small Signal formula is defined as the current flowing into the input stage of the amplifier. It is a critical parameter in determining the amplifier's performance and is represented as i_in = (V_c*((1+g_m*R_si)/R_si)) or Input Current Of Small Signal = (Critical Voltage*((1+Transconductance*Self Induced Resistance)/Self Induced Resistance)). Critical Voltage is the minimum phase to the neutral voltage which glows and appears all along the line conductor, Transconductance is defined as the ratio of the change in the output current to the change in the input voltage, with the gate-source voltage held constant & Self Induced Resistance is the internal resistance that occurs due to the presence of the FET's own charge carriers (electrons or holes).

How to calculate Input Current of Small Signal?

The Input Current Of Small Signal formula is defined as the current flowing into the input stage of the amplifier. It is a critical parameter in determining the amplifier's performance is calculated using Input Current Of Small Signal = (Critical Voltage*((1+Transconductance*Self Induced Resistance)/Self Induced Resistance)). To calculate Input Current of Small Signal, you need Critical Voltage (V_c), Transconductance (g_m) & Self Induced Resistance (R_si). With our tool, you need to enter the respective value for Critical Voltage, Transconductance & Self Induced Resistance 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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