Equivalent Signal Resistance of CS Amplifier Calculator

✖Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier.ⓘ Signal Resistance [R_sig]			+10% -10%
✖Output resistance is the resistance an amplifier sees when driving a load. It is an important parameter in amplifier design as it affects the amplifier's output power and efficiency.ⓘ Output Resistance [R_out]			+10% -10%

✖Internal Small Signal Resistance in a transistor refers to the resistance that occurs within the transistor due to the internal construction of the device.ⓘ Equivalent Signal Resistance of CS Amplifier [R'_sig]

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Equivalent Signal Resistance of CS Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Internal Small Signal Resistance = 1/((1/Signal Resistance+1/Output Resistance))
R'_sig = 1/((1/R_sig+1/R_out))
This formula uses 3 Variables

Variables Used

Internal Small Signal Resistance - (Measured in Ohm) - Internal Small Signal Resistance in a transistor refers to the resistance that occurs within the transistor due to the internal construction of the device.
Signal Resistance - (Measured in Ohm) - Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier.
Output Resistance - (Measured in Ohm) - Output resistance is the resistance an amplifier sees when driving a load. It is an important parameter in amplifier design as it affects the amplifier's output power and efficiency.

STEP 1: Convert Input(s) to Base Unit

Signal Resistance: 1.25 Kilohm --> 1250 Ohm (Check conversion here)
Output Resistance: 1.508 Kilohm --> 1508 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R'_sig = 1/((1/R_sig+1/R_out)) --> 1/((1/1250+1/1508))

Evaluating ... ...

R'_sig = 683.46627991298

STEP 3: Convert Result to Output's Unit

683.46627991298 Ohm -->0.68346627991298 Kilohm (Check conversion here)

FINAL ANSWER

0.68346627991298 ≈ 0.683466 Kilohm <-- Internal Small Signal Resistance

(Calculation completed in 00.020 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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National Institute Of Technology (NIT), Hamirpur

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< Response of CS Amplifier Calculators

Output Voltage of CS Amplifier

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

Equivalent Signal Resistance of CS Amplifier

LaTeX Go Internal Small Signal Resistance = 1/((1/Signal Resistance+1/Output Resistance))

Frequency of Zero Transmission of CS Amplifier

LaTeX Go Transmission Frequency = 1/(Bypass Capacitor*Signal Resistance)

Midband Gain of CS Amplifier

LaTeX Go Mid Band Gain = Output Voltage/Small Signal Voltage

< Common Stage Amplifiers Calculators

Effective High Frequency Time Constant of CE Amplifier

LaTeX Go Effective High Frequency Time Constant = Base Emitter Capacitance*Signal Resistance+(Collector Base Junction Capacitance*(Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance))+(Capacitance*Load Resistance)

High-Frequency Band given Complex Frequency Variable

LaTeX Go Amplifier Gain in Mid Band = sqrt(((1+(3 dB Frequency/Frequency))*(1+(3 dB Frequency/Frequency Observed)))/((1+(3 dB Frequency/Pole Frequency))*(1+(3 dB Frequency/Second Pole Frequency))))

Collector Base Junction Resistance of CE Amplifier

LaTeX Go Collector Resistance = Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance

Amplifier Bandwidth in Discrete-Circuit Amplifier

LaTeX Go Amplifier Bandwidth = High Frequency-Low Frequency

Equivalent Signal Resistance of CS Amplifier Formula

LaTeX Go

Internal Small Signal Resistance = 1/((1/Signal Resistance+1/Output Resistance))
R'_sig = 1/((1/R_sig+1/R_out))

What is CS amplifier?

In electronics, a common-source amplifier is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically used as a voltage or transconductance amplifier. The easiest way to tell if a FET is a common source, common drain, or common gate is to examine where the signal enters and leaves.

How to Calculate Equivalent Signal Resistance of CS Amplifier?

Equivalent Signal Resistance of CS Amplifier calculator uses Internal Small Signal Resistance = 1/((1/Signal Resistance+1/Output Resistance)) to calculate the Internal Small Signal Resistance, The Equivalent signal resistance of CS amplifier formula is defined as the aggregate resistance connected either in parallel or series is calculated. Internal Small Signal Resistance is denoted by R'_sig symbol.

How to calculate Equivalent Signal Resistance of CS Amplifier using this online calculator? To use this online calculator for Equivalent Signal Resistance of CS Amplifier, enter Signal Resistance (R_sig) & Output Resistance (R_out) and hit the calculate button. Here is how the Equivalent Signal Resistance of CS Amplifier calculation can be explained with given input values -> 0.000683 = 1/((1/1250+1/1508)).

FAQ

What is Equivalent Signal Resistance of CS Amplifier?

The Equivalent signal resistance of CS amplifier formula is defined as the aggregate resistance connected either in parallel or series is calculated and is represented as R'_sig = 1/((1/R_sig+1/R_out)) or Internal Small Signal Resistance = 1/((1/Signal Resistance+1/Output Resistance)). Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier & Output resistance is the resistance an amplifier sees when driving a load. It is an important parameter in amplifier design as it affects the amplifier's output power and efficiency.

How to calculate Equivalent Signal Resistance of CS Amplifier?

The Equivalent signal resistance of CS amplifier formula is defined as the aggregate resistance connected either in parallel or series is calculated is calculated using Internal Small Signal Resistance = 1/((1/Signal Resistance+1/Output Resistance)). To calculate Equivalent Signal Resistance of CS Amplifier, you need Signal Resistance (R_sig) & Output Resistance (R_out). With our tool, you need to enter the respective value for Signal Resistance & Output 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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