Madeline Horn edited subsection_Method_for_Johnson_Noise__.tex  over 8 years ago

Commit id: 0368e4c7930fcd67d65fda36622e10f5d3b8015e

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Because we want to keep the $R$ the same, we decided to vary $\Delta f$, so we needed to have a set-up where there was both a low pass and a high pass. This way, we could vary $\Delta f$ with 36 different settings. We also used two amplifiers in order to amplify the desired signal. Those values were: $X600$ for the first gain and $X1000$ for the second gain. We also squared the signal in order to measure the voltage as: $<(V_J + V_{\textrm{other noise}})^2>$.  As seen in equation \ref{eq:NyquistPredictionForJohnsonNoise2}, we will be measuring the $<(V_J + V_{\textrm{other noise}})^2>$.  Refer to Figure \ref{fig:JohnsonSchem} for the set-up of the Noise Fundamentals.