Setting up an LRC series circuit with coupled coils

  • #1
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Homework Statement


I have been trying to set up an LRC series circuit where in place of an inductor we have a pair of coupled coils. My aim is to determine the resonant frequency in the circuit when the voltage across the resistor or the current in the circuit is at a maximum. I am using a function generator to create a sinusoidal function through the first coil which in turn will create an emf through the second coil placed inside the first. I am then trying to display the resulting waveform on an oscilloscope display along with the input. I am using the second coils dimensions to calculate a theoretical inductor value but I am having trouble correctly connecting the circuit up.

I have connected what I thought was correct but am confused as to how to incorporate the ground from the function generator. Normally I would connect the resistor to the negative (ground) output of the function generator but how do I do that with the coupled coils present?

Thanks in advance!
 

Answers and Replies

  • #2
BvU
Science Advisor
Homework Helper
14,093
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Could you set up a diagram and post it ? Much easier to comment on... Something like this ?

upload_2015-2-10_0-21-33.png
 

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