Engineering RLC circuit close to resonance

AI Thread Summary
In an experiment with an RLC circuit near resonance, a significant loss of current and voltage (30%) was observed, raising questions about the causes. Factors such as human error, component tolerances, and measurement inaccuracies were considered, but the substantial loss remains unexplained. A participant noted that at resonance, the circuit should experience minimum impedance, leading to increased current, which contradicts the observed losses. This discrepancy suggests that there may be additional factors at play affecting circuit performance. Further insights from others in the discussion are sought to clarify the situation.
Ghost101
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Hi!

Recently I did an experiment of an RLC circuit nearing resonance, and I found a substantial amount of loss of both current and voltage (30%). (More so than a different kind of AC circuit)




My question is, why is this so? Or is this just a coincidence/human error?



Some of the factors affecting accuracy that I listed are common occurance in any circuit;

-Human Error.
-Tolerance in components.
-Inaccuracies in the measurement equipment.

Am I missing something significant?


Thanks in advance!
 
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Ghost101 said:
Hi!

Recently I did an experiment of an RLC circuit nearing resonance, and I found a substantial amount of loss of both current and voltage (30%). (More so than a different kind of AC circuit)




My question is, why is this so? Or is this just a coincidence/human error?



Some of the factors affecting accuracy that I listed are common occurance in any circuit;

-Human Error.
-Tolerance in components.
-Inaccuracies in the measurement equipment.

Am I missing something significant?


Thanks in advance!

Are you referring to a series RLC circuit?

Remember that a circuit at resonance frequency experiences minimum impeadance. (it becomes purely resisitive)

This doesn't seem to make sense in my mind because as a circuit nears resonance the overall impeadance is decreasing, so one would expect the current to increase.

Hopefully others can shed light on the subject as well!
 

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