Loop Gain of Feedback Amplifier Calculator

✖The returned signal is the product of the loop gain and test signal.ⓘ Returned Signal [S_r]			+10% -10%
✖The test signal is a step signal with a step size expressed as the percentage change P in the correction unit.ⓘ Test Signal [S_t]			+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 of Feedback Amplifier [Aβ]

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Formula

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Loop Gain of Feedback Amplifier

Formula

`"Aβ" = ("S"_{"r"}/"S"_{"t"})`

Example

`"3.214286"=("45V"/"14V")`

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Loop Gain of Feedback Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Loop Gain = (Returned Signal/Test Signal)
Aβ = (S_r/S_t)
This formula uses 3 Variables

Variables Used

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.
Returned Signal - (Measured in Volt) - The returned signal is the product of the loop gain and test signal.
Test Signal - (Measured in Volt) - The test signal is a step signal with a step size expressed as the percentage change P in the correction unit.

STEP 1: Convert Input(s) to Base Unit

Returned Signal: 45 Volt --> 45 Volt No Conversion Required
Test Signal: 14 Volt --> 14 Volt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Aβ = (S_r/S_t) --> (45/14)

Evaluating ... ...

Aβ = 3.21428571428571

STEP 3: Convert Result to Output's Unit

3.21428571428571 --> No Conversion Required

FINAL ANSWER

3.21428571428571 ≈ 3.214286 <-- Loop Gain

(Calculation completed in 00.004 seconds)

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Credits

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

Urvi Rathod has verified this Calculator and 1900+ more calculators!

< 5 Signal Analysis 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))

Output Signal in Feedback Amplifier

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

Feedback Factor of Feedback Amplifier

Go Feedback Factor = Input Signal Feedback/Signal Output

Loop Gain of Feedback Amplifier

Go Loop Gain = (Returned Signal/Test Signal)

Loop Gain of Feedback Amplifier Formula

Loop Gain = (Returned Signal/Test Signal)
Aβ = (S_r/S_t)

What is feedback amplifier?

The process of injecting a fraction of the output energy of some device back to the input is known as Feedback. It has been found that feedback is very useful in reducing noise and making the amplifier operation stable.

Depending upon whether the feedback signal aids or opposes the input signal, there are two types of feedbacks used - Positive Feedback and Negative Feedback.
The feedback in which the feedback energy i.e., either voltage or current is in phase with the input signal and thus aids it is called Positive feedback.

The feedback in which the feedback energy i.e., either voltage or current is out of phase with the input and thus opposes it, is called negative feedback.

How to Calculate Loop Gain of Feedback Amplifier?

Loop Gain of Feedback Amplifier calculator uses Loop Gain = (Returned Signal/Test Signal) to calculate the Loop Gain, The Loop gain of feedback amplifier formula is related to accuracy of amplifier's gain more loop gain in amplifier means more gain accuracy. Increasing output voltage of LT1086 is identical to increasing closed-loop gain of op-amp. Loop Gain is denoted by Aβ symbol.

How to calculate Loop Gain of Feedback Amplifier using this online calculator? To use this online calculator for Loop Gain of Feedback Amplifier, enter Returned Signal (S_r) & Test Signal (S_t) and hit the calculate button. Here is how the Loop Gain of Feedback Amplifier calculation can be explained with given input values -> 3.214286 = (45/14).

FAQ

What is Loop Gain of Feedback Amplifier?

The Loop gain of feedback amplifier formula is related to accuracy of amplifier's gain more loop gain in amplifier means more gain accuracy. Increasing output voltage of LT1086 is identical to increasing closed-loop gain of op-amp and is represented as Aβ = (S_r/S_t) or Loop Gain = (Returned Signal/Test Signal). The returned signal is the product of the loop gain and test signal & The test signal is a step signal with a step size expressed as the percentage change P in the correction unit.

How to calculate Loop Gain of Feedback Amplifier?

The Loop gain of feedback amplifier formula is related to accuracy of amplifier's gain more loop gain in amplifier means more gain accuracy. Increasing output voltage of LT1086 is identical to increasing closed-loop gain of op-amp is calculated using Loop Gain = (Returned Signal/Test Signal). To calculate Loop Gain of Feedback Amplifier, you need Returned Signal (S_r) & Test Signal (S_t). With our tool, you need to enter the respective value for Returned Signal & Test Signal 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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