Output Current of Small Signal Calculator

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MOSFET BJT

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Small Signal Analysis Amplification Factor or Gain Biasing Common Mode Rejection Ratio (CMRR)Current Internal Capacitive Effects and High Frequency Model MOS Transistor MOSFET Characterstics N Channel Enhancement P Channel Enhancement Resistance Transconductance Voltage

✖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%
✖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%
✖Drain Resistance is defined as the resistance opposing the flow of current through the drain of the transistor.ⓘ Drain Resistance [R_d]			+10% -10%
✖Load resistance is the external resistance connected between the drain terminal of the MOSFET and the power supply voltage.ⓘ Load Resistance [R_L]			+10% -10%

✖The Output Current in a MOSFET refers to the current flowing through the drain terminal when a voltage is applied at the gate terminal.ⓘ Output Current of Small Signal [i_out]

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Formula

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Output Current of Small Signal

Formula

i out = (g m \cdot V c) \cdot (\frac{R d}{R L + R d})

Example

5.4E-6 A = (0.5 mS \cdot 0.284 V) \cdot (\frac{11 Ω}{0.28 kΩ + 11 Ω})

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Output Current of Small Signal Solution

STEP 0: Pre-Calculation Summary

Formula Used

Output Current = (Transconductance*Critical Voltage)*(Drain Resistance/(Load Resistance+Drain Resistance))
i_out = (g_m*V_c)*(R_d/(R_L+R_d))
This formula uses 5 Variables

Variables Used

Output Current - (Measured in Ampere) - The Output Current in a MOSFET refers to the current flowing through the drain terminal when a voltage is applied at the gate terminal.
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.
Critical Voltage - (Measured in Volt) - Critical Voltage is the minimum phase to the neutral voltage which glows and appears all along the line conductor.
Drain Resistance - (Measured in Ohm) - Drain Resistance is defined as the resistance opposing the flow of current through the drain of the transistor.
Load Resistance - (Measured in Ohm) - Load resistance is the external resistance connected between the drain terminal of the MOSFET and the power supply voltage.

STEP 1: Convert Input(s) to Base Unit

Transconductance: 0.5 Millisiemens --> 0.0005 Siemens (Check conversion here)
Critical Voltage: 0.284 Volt --> 0.284 Volt No Conversion Required
Drain Resistance: 11 Ohm --> 11 Ohm No Conversion Required
Load Resistance: 0.28 Kilohm --> 280 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

i_out = (g_m*V_c)*(R_d/(R_L+R_d)) --> (0.0005*0.284)*(11/(280+11))

Evaluating ... ...

i_out = 5.36769759450172E-06

STEP 3: Convert Result to Output's Unit

5.36769759450172E-06 Ampere --> No Conversion Required

FINAL ANSWER

5.36769759450172E-06 ≈ 5.4E-6 Ampere <-- Output Current

(Calculation completed in 00.006 seconds)

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Vellore Institute of Technology (VIT Vellore), Vellore

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< 5 Small Signal Analysis Calculators

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))

Small-Signal Voltage Gain with respect to Drain Resistance

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

Transconductance Given Small Signal Parameters

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

Small Signal Output Voltage

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

Output Current of Small Signal Formula

Output Current = (Transconductance*Critical Voltage)*(Drain Resistance/(Load Resistance+Drain Resistance))
i_out = (g_m*V_c)*(R_d/(R_L+R_d))

What is the application of drain current in mosfet?

The drain current plays a crucial role in various applications of MOSFETs, including amplification in audio and radio frequency circuits, switching operations in digital logic circuits, and power management in voltage regulators.

How to Calculate Output Current of Small Signal?

Output Current of Small Signal calculator uses Output Current = (Transconductance*Critical Voltage)*(Drain Resistance/(Load Resistance+Drain Resistance)) to calculate the Output Current, The Output Current Of Small Signal formula is defined as the current flowing through the drain terminal when a voltage is applied at the gate terminal. Output Current is denoted by i_out symbol.

How to calculate Output Current of Small Signal using this online calculator? To use this online calculator for Output Current of Small Signal, enter Transconductance (g_m), Critical Voltage (V_c), Drain Resistance (R_d) & Load Resistance (R_L) and hit the calculate button. Here is how the Output Current of Small Signal calculation can be explained with given input values -> 5.4E-6 = (0.0005*0.284)*(11/(280+11)).

FAQ

What is Output Current of Small Signal?

The Output Current Of Small Signal formula is defined as the current flowing through the drain terminal when a voltage is applied at the gate terminal and is represented as i_out = (g_m*V_c)*(R_d/(R_L+R_d)) or Output Current = (Transconductance*Critical Voltage)*(Drain Resistance/(Load Resistance+Drain Resistance)). 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, Critical Voltage is the minimum phase to the neutral voltage which glows and appears all along the line conductor, Drain Resistance is defined as the resistance opposing the flow of current through the drain of the transistor & Load resistance is the external resistance connected between the drain terminal of the MOSFET and the power supply voltage.

How to calculate Output Current of Small Signal?

The Output Current Of Small Signal formula is defined as the current flowing through the drain terminal when a voltage is applied at the gate terminal is calculated using Output Current = (Transconductance*Critical Voltage)*(Drain Resistance/(Load Resistance+Drain Resistance)). To calculate Output Current of Small Signal, you need Transconductance (g_m), Critical Voltage (V_c), Drain Resistance (R_d) & Load Resistance (R_L). With our tool, you need to enter the respective value for Transconductance, Critical Voltage, Drain Resistance & Load 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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