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Input Current of Small Signal Formula

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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. Check FAQs

i in = (V c \cdot (\frac{1 + g m \cdot R si}{R si}))

i_in - Input Current Of Small Signal?V_c - Critical Voltage?g_m - Transconductance?R_si - Self Induced Resistance?

Input Current of Small Signal Example

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Here is how the Input Current of Small Signal equation looks like with Values.

Here is how the Input Current of Small Signal equation looks like with Units.

Here is how the Input Current of Small Signal equation looks like.

0.0002 = (0.284 \cdot (\frac{1 + 0.5 \cdot 14.3}{14.3}))

0.0002A = (0.284V \cdot (\frac{1 + 0.5mS \cdot 14.3kΩ}{14.3kΩ}))

0.0002 = (0.284 \cdot (\frac{1 + 0.5 \cdot 14.3}{14.3}))

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Input Current of Small Signal Solution

Follow our step by step solution on how to calculate Input Current of Small Signal?

FIRST Step Consider the formula

i in = (V c \cdot (\frac{1 + g m \cdot R si}{R si}))

Next Step Substitute values of Variables

∴

i in = (0.284V \cdot (\frac{1 + 0.5mS \cdot 14.3kΩ}{14.3kΩ}))

Next Step Convert Units

∴

i in = (0.284V \cdot (\frac{1 + 0.0005S \cdot 14300Ω}{14300Ω}))

Next Step Prepare to Evaluate

∴

i in = (0.284 \cdot (\frac{1 + 0.0005 \cdot 14300}{14300}))

Next Step Evaluate

∴

i in = 0.00016186013986014A

LAST Step Rounding Answer

∴

i in = 0.0002A

Input Current of Small Signal Formula Elements

Variables

Input Current Of Small Signal

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.

Symbol: i_in

Measurement: Electric CurrentUnit: A

Note: Value should be greater than 0.

Formulas to find Input Current Of Small Signal

Critical Voltage

Critical Voltage is the minimum phase to the neutral voltage which glows and appears all along the line conductor.

Symbol: V_c

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Critical Voltage

Transconductance

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.

Symbol: g_m

Measurement: Electric ConductanceUnit: mS

Note: Value can be positive or negative.

Formulas to find Transconductance

Self Induced Resistance

Self Induced Resistance is the internal resistance that occurs due to the presence of the FET's own charge carriers (electrons or holes).

Symbol: R_si

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Formulas to find Self Induced Resistance

Other formulas in Small Signal Analysis category

Go Transconductance Given Small Signal Parameters

g m = 2 \cdot K n \cdot (V gsq - V t)

Go Output Voltage of Small Signal P-Channel

V out = g m \cdot V sg \cdot (\frac{R out \cdot R d}{R d + R out})

Go Small-Signal Voltage Gain with respect to Drain Resistance

A v = (g m \cdot (\frac{R out \cdot R d}{R out + R d}))

Go Small Signal Output Voltage

V out = g m \cdot V sg \cdot R L

How to Evaluate Input Current of Small Signal?

Input Current of Small Signal evaluator uses Input Current Of Small Signal = (Critical Voltage*((1+Transconductance*Self Induced Resistance)/Self Induced Resistance)) to evaluate 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 evaluate Input Current of Small Signal using this online evaluator? To use this online evaluator for Input Current of Small Signal, enter Critical Voltage (V_c), Transconductance (g_m) & Self Induced Resistance (R_si) and hit the calculate button.

FAQs on Input Current of Small Signal

What is the formula to find Input Current of Small Signal?

The formula of Input Current of Small Signal is expressed as Input Current Of Small Signal = (Critical Voltage*((1+Transconductance*Self Induced Resistance)/Self Induced Resistance)). Here is an example- 0.000162 = (0.284*((1+0.0005*14300)/14300)).

How to calculate Input Current of Small Signal?

With Critical Voltage (V_c), Transconductance (g_m) & Self Induced Resistance (R_si) we can find Input Current of Small Signal using the formula - Input Current Of Small Signal = (Critical Voltage*((1+Transconductance*Self Induced Resistance)/Self Induced Resistance)).

Can the Input Current of Small Signal be negative?

No, the Input Current of Small Signal, measured in Electric Current cannot be negative.

Which unit is used to measure Input Current of Small Signal?

Input Current of Small Signal is usually measured using the Ampere[A] for Electric Current. Milliampere[A], Microampere[A], Centiampere[A] are the few other units in which Input Current of Small Signal can be measured.

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Input Current of Small Signal Formula

Input Current of Small Signal Example

Input Current of Small Signal Solution

Input Current of Small Signal Formula Elements

Other formulas in Small Signal Analysis category

How to Evaluate Input Current of Small Signal?

FAQs on Input Current of Small Signal

Variable Name