Output Resistance with Feedback Voltage Amplifier Calculator

✖Output resistance is the value of resistance of the network.ⓘ Output Resistance [R_o]			+10% -10%
✖The loop gain is calculated by imagining the feedback loop is broken at some point and calculating the net gain if a signal is applied.ⓘ Loop Gain [Aβ]			+10% -10%

✖Output Resistance of Voltage Amplifier with feedback is the resistance across the output terminals of a current amplifier.ⓘ Output Resistance with Feedback Voltage Amplifier [R_vof]

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Formula

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Output Resistance with Feedback Voltage Amplifier

Formula

`"R"_{"vof"} = "R"_{"o"}/(1+"Aβ")`

Example

`"0.647222kΩ"="2.33kΩ"/(1+"2.6")`

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Output Resistance with Feedback Voltage Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Output Resistance of Voltage Amplifier = Output Resistance/(1+Loop Gain)
R_vof = R_o/(1+Aβ)
This formula uses 3 Variables

Variables Used

Output Resistance of Voltage Amplifier - (Measured in Ohm) - Output Resistance of Voltage Amplifier with feedback is the resistance across the output terminals of a current amplifier.
Output Resistance - (Measured in Ohm) - Output resistance is the value of resistance of the network.
Loop Gain - The loop gain is calculated by imagining the feedback loop is broken at some point and calculating the net gain if a signal is applied.

STEP 1: Convert Input(s) to Base Unit

Output Resistance: 2.33 Kilohm --> 2330 Ohm (Check conversion here)
Loop Gain: 2.6 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_vof = R_o/(1+Aβ) --> 2330/(1+2.6)

Evaluating ... ...

R_vof = 647.222222222222

STEP 3: Convert Result to Output's Unit

647.222222222222 Ohm -->0.647222222222222 Kilohm (Check conversion here)

FINAL ANSWER

0.647222222222222 ≈ 0.647222 Kilohm <-- Output Resistance of Voltage Amplifier

(Calculation completed in 00.004 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has created this Calculator and 600+ more calculators!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

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< 5 Voltage Feedback Amplifiers Calculators

Output Current of Feedback Voltage Amplifier Given Loop Gain

Go Output Current = (1+Loop Gain)*Output Voltage/Output Resistance

Open Loop Gain of Feedback Voltage Amplifier

Go Open Loop Gain of an Operational Amplifier = Output Voltage/Input Voltage

Output Resistance with Feedback Voltage Amplifier

Go Output Resistance of Voltage Amplifier = Output Resistance/(1+Loop Gain)

Input Resistance with Feedback of Feedback Voltage Amplifier Given Loop Gain

Go Input Resistance with Feedback = Input Resistance*(1+Loop Gain)

Output Voltage of Feedback Voltage Amplifier

Go Output Voltage = (Input Voltage/Feedback Factor)

< 15 Negative Feedback Amplifiers Calculators

Feedback Signal

Go Feedback Signal = ((Open Loop Gain of an Operational Amplifier*Feedback Factor)/(1+(Open Loop Gain of an Operational Amplifier*Feedback Factor)))*Source Signal

Error Signal

Go Error Signal = Source Signal/(1+(Open Loop Gain of an Operational Amplifier*Feedback Factor))

Gain at Mid and High Frequencies

Go Gain Factor = Mid Band Gain/(1+(Complex Frequency Variable/Upper 3-dB Frequency))

Signal-to-Interference Ratio at Output

Go Signal to Interference Ratio = (Source Voltage/Voltage Interference)*Gain Factor

Lower 3-DB Frequency in Bandwidth Extension

Go Lower 3-dB Frequency = 3-dB Frequency/(1+(Mid Band Gain*Feedback Factor))

Upper 3-DB Frequency of Feedback Amplifier

Go Upper 3-dB Frequency = 3-dB Frequency*(1+Mid Band Gain*Feedback Factor)

Output Current of Feedback Voltage Amplifier Given Loop Gain

Go Output Current = (1+Loop Gain)*Output Voltage/Output Resistance

Gain with Feedback of Feedback Amplifier

Go Gain with Feedback = (Open Loop Gain of an Operational Amplifier)/Amount of Feedback

Output Signal in Feedback Amplifier

Go Signal Output = Open Loop Gain of an Operational Amplifier*Input Signal Feedback

Output Resistance with Feedback Current Amplifier

Go Output Resistance of Current Amplifier = Amount of Feedback*Output Resistance

Output Resistance with Feedback Voltage Amplifier

Go Output Resistance of Voltage Amplifier = Output Resistance/(1+Loop Gain)

Input Resistance with Feedback Current Amplifier

Go Input Resistance with Feedback = Input Resistance/(1+Loop Gain)

Closed-Loop Gain as Function of Ideal Value

Go Closed-Loop Gain = (1/Feedback Factor)*(1/(1+(1/Loop Gain)))

Feedback Factor of Feedback Amplifier

Go Feedback Factor = Input Signal Feedback/Signal Output

Amount of Feedback Given Loop Gain

Go Amount of Feedback = 1+Loop Gain

Output Resistance with Feedback Voltage Amplifier Formula

Output Resistance of Voltage Amplifier = Output Resistance/(1+Loop Gain)
R_vof = R_o/(1+Aβ)

How the negative feedback affects the input and output resistance?

In negative feedback, the feedback energy (voltage or current), is out of phase with the input signal and thus opposes it. Negative feedback reduces the gain of the amplifier. It also reduces distortion, noise, and instability. This feedback increases bandwidth and improves input and output impedances.

How to Calculate Output Resistance with Feedback Voltage Amplifier?

Output Resistance with Feedback Voltage Amplifier calculator uses Output Resistance of Voltage Amplifier = Output Resistance/(1+Loop Gain) to calculate the Output Resistance of Voltage Amplifier, Output Resistance with Feedback Voltage Amplifier refers to the resistance that appears across the output of an amplifier when feedback is applied to the input. Output Resistance of Voltage Amplifier is denoted by R_vof symbol.

How to calculate Output Resistance with Feedback Voltage Amplifier using this online calculator? To use this online calculator for Output Resistance with Feedback Voltage Amplifier, enter Output Resistance (R_o) & Loop Gain (Aβ) and hit the calculate button. Here is how the Output Resistance with Feedback Voltage Amplifier calculation can be explained with given input values -> 0.000647 = 2330/(1+2.6).

FAQ

What is Output Resistance with Feedback Voltage Amplifier?

Output Resistance with Feedback Voltage Amplifier refers to the resistance that appears across the output of an amplifier when feedback is applied to the input and is represented as R_vof = R_o/(1+Aβ) or Output Resistance of Voltage Amplifier = Output Resistance/(1+Loop Gain). Output resistance is the value of resistance of the network & The loop gain is calculated by imagining the feedback loop is broken at some point and calculating the net gain if a signal is applied.

How to calculate Output Resistance with Feedback Voltage Amplifier?

Output Resistance with Feedback Voltage Amplifier refers to the resistance that appears across the output of an amplifier when feedback is applied to the input is calculated using Output Resistance of Voltage Amplifier = Output Resistance/(1+Loop Gain). To calculate Output Resistance with Feedback Voltage Amplifier, you need Output Resistance (R_o) & Loop Gain (Aβ). With our tool, you need to enter the respective value for Output Resistance & Loop Gain 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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