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I've tried to determine the maximum current sensitivity in this transformer scheme but I'm not sure if my solution is valid. I need to find the relation between the current in the input transformer and the flux through the SQUID. At step 3, in my solution below, you can see that I assume that the flux though the second transformer is equal to the flux through the SQUID, is this valid? Is the transfer och flux through the transformers this simple?

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  • $\begingroup$ Please use MathJax for equations. $\endgroup$
    – Vincent Thacker
    Commented May 25 at 16:49

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