Feedback Signal Solution

STEP 0: Pre-Calculation Summary
Formula Used
Feedback Signal = ((Open Loop Gain of an Operational Amplifier*Feedback Factor)/(1+(Open Loop Gain of an Operational Amplifier*Feedback Factor)))*Source Signal
Sf = ((A*β)/(1+(A*β)))*Sso
This formula uses 4 Variables
Variables Used
Feedback Signal - The feedback signal is a fraction of the output that is added to the input.
Open Loop Gain of an Operational Amplifier - The Open Loop Gain of an Operational Amplifier is gain of an op-amp without feedback. It is denoted as A.
Feedback Factor - The feedback factor of an op-amp application defines the circuit performance.
Source Signal - Source signal is a voltage-controlled current source, an amplitude/frequency stabilized sine wave oscillator.
STEP 1: Convert Input(s) to Base Unit
Open Loop Gain of an Operational Amplifier: 2.2 --> No Conversion Required
Feedback Factor: 0.454 --> No Conversion Required
Source Signal: 22 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Sf = ((A*β)/(1+(A*β)))*Sso --> ((2.2*0.454)/(1+(2.2*0.454)))*22
Evaluating ... ...
Sf = 10.9933960376226
STEP 3: Convert Result to Output's Unit
10.9933960376226 --> No Conversion Required
FINAL ANSWER
10.9933960376226 10.9934 <-- Feedback Signal
(Calculation completed in 00.004 seconds)

Credits

Created by Payal Priya
Birsa Institute of Technology (BIT), Sindri
Payal Priya has created this Calculator and 600+ more calculators!
Verified by Anshika Arya
National Institute Of Technology (NIT), Hamirpur
Anshika Arya has verified this Calculator and 2500+ 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)

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

Feedback Signal Formula

Feedback Signal = ((Open Loop Gain of an Operational Amplifier*Feedback Factor)/(1+(Open Loop Gain of an Operational Amplifier*Feedback Factor)))*Source Signal
Sf = ((A*β)/(1+(A*β)))*Sso

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 Feedback Signal?

Feedback Signal calculator uses Feedback Signal = ((Open Loop Gain of an Operational Amplifier*Feedback Factor)/(1+(Open Loop Gain of an Operational Amplifier*Feedback Factor)))*Source Signal to calculate the Feedback Signal, The Feedback Signal formula is defined as a fraction of the output that is added to the input. If this signal is in phase with the input the feedback is positive; if it is in the opposite phase (anti-phase) the feedback is negative. Feedback Signal is denoted by Sf symbol.

How to calculate Feedback Signal using this online calculator? To use this online calculator for Feedback Signal, enter Open Loop Gain of an Operational Amplifier (A), Feedback Factor (β) & Source Signal (Sso) and hit the calculate button. Here is how the Feedback Signal calculation can be explained with given input values -> 10.9934 = ((2.2*0.454)/(1+(2.2*0.454)))*22.

FAQ

What is Feedback Signal?
The Feedback Signal formula is defined as a fraction of the output that is added to the input. If this signal is in phase with the input the feedback is positive; if it is in the opposite phase (anti-phase) the feedback is negative and is represented as Sf = ((A*β)/(1+(A*β)))*Sso or Feedback Signal = ((Open Loop Gain of an Operational Amplifier*Feedback Factor)/(1+(Open Loop Gain of an Operational Amplifier*Feedback Factor)))*Source Signal. The Open Loop Gain of an Operational Amplifier is gain of an op-amp without feedback. It is denoted as A, The feedback factor of an op-amp application defines the circuit performance & Source signal is a voltage-controlled current source, an amplitude/frequency stabilized sine wave oscillator.
How to calculate Feedback Signal?
The Feedback Signal formula is defined as a fraction of the output that is added to the input. If this signal is in phase with the input the feedback is positive; if it is in the opposite phase (anti-phase) the feedback is negative is calculated using Feedback Signal = ((Open Loop Gain of an Operational Amplifier*Feedback Factor)/(1+(Open Loop Gain of an Operational Amplifier*Feedback Factor)))*Source Signal. To calculate Feedback Signal, you need Open Loop Gain of an Operational Amplifier (A), Feedback Factor (β) & Source Signal (Sso). With our tool, you need to enter the respective value for Open Loop Gain of an Operational Amplifier, Feedback Factor & Source 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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