Assignment problem on Operational Amplifier

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Discussion Overview

The discussion revolves around an assignment problem related to operational amplifiers, specifically focusing on verifying calculations and identifying the mathematical operation performed by a given circuit. The scope includes technical reasoning and conceptual clarification regarding the circuit's function.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Homework-related

Main Points Raised

  • One participant requests verification of their calculations related to an operational amplifier circuit and seeks clarification on the mathematical operation it performs.
  • Another participant suggests that the equation V = (V1 + V2)/2 resembles a familiar operation, hinting at averaging.
  • A different participant expresses uncertainty about the interpretation of the equation, describing it as an average potential difference but questioning its relevance.
  • Another response reiterates the idea of the equation representing an average voltage, mentioning the gain from output resistors but not providing a definitive name for the operation.

Areas of Agreement / Disagreement

Participants express differing levels of understanding regarding the interpretation of the equation V = (V1 + V2)/2, with some identifying it as an average while others remain uncertain. No consensus is reached on the exact nature of the mathematical operation performed by the circuit.

Contextual Notes

Participants reference relevant equations and calculations but do not provide complete mathematical derivations or assumptions underlying their interpretations. The discussion reflects varying degrees of familiarity with operational amplifier concepts.

Who May Find This Useful

Students and individuals studying operational amplifiers, circuit analysis, or related topics in electronics may find this discussion relevant.

lawteoh777
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The question is as given in the image attached entitled 'amplifier question' I would just like someone to check my working and verify whether it's correct or not. Thanks. And also want to ask on the second part which is 'what mathematical operation does this circuit perform?' Any help would be really appreciated.



Relevant equations would be V+ = V- I guess.



The attempt on my question is as attached in the image entitled 'amplifier question 2'
 

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lawteoh777 said:
The question is as given in the image attached entitled 'amplifier question' I would just like someone to check my working and verify whether it's correct or not. Thanks. And also want to ask on the second part which is 'what mathematical operation does this circuit perform?' Any help would be really appreciated.



Relevant equations would be V+ = V- I guess.



The attempt on my question is as attached in the image entitled 'amplifier question 2'

Your work looks correct to me. And for the second part of the question, what does the equation V = (V1 + V2)/2 look like to you? It should be the form of a familiar operation...

And the gain afterwards (from the output resistors) is just gain on top of the original operation.
 
Really no idea on what the equation V = (V1 + V2)/2 looks like to me. It looks like average potential difference, but it doesn't make sense also. :/
 
lawteoh777 said:
Really no idea on what the equation V = (V1 + V2)/2 looks like to me. It looks like average potential difference, but it doesn't make sense also. :/

That's what I would have called it, an average voltage. With gain afterwards. Not sure if it has a catchier name...
 

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