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Madeline Horn edited textit_Johnson_Noise_To_perform__.tex
over 8 years ago
Commit id: 0825aa0bbd7810029ace2e75aeb9cd72adaa5b2e
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\textit{Johnson Noise}
To perform the Johnson Noise Experiment, we used the Noise Fundamentals devices and two digital multi-meters. Our settings for the Noise Fundamentals devices were as follows: $10K$ ohm resistor, we used a Gain of $1000$ for all values, we used a room temperature of $295$ degrees Kelvin, and we varied the high and low pass filters' frequency for each data set in order to vary the bandwidth.
We varied our high pass filter one as follows: In Table 1, you can see how we
started with $10$ Hz, $30$ Hz, $100$ Hz, $300$ Hz, $1000$ Hz, and $3000$ Hz. We varied
our the low pass filter
as follows: we started with $0.33K$ Hz, $1K$ Hz, $3.3K$ Hz, $10K$ Hz, $33K$ Hz, (f2) and
$100K$ Hz. We recorded all the
high pass filter (f1) in order to change the bandwidth. The values
are taken from the
multi-meter for each combination of filters. For example, when we had a low pass of $0.33K$ Hz, a high pass DMM after going through the filters, gain, and multiplier. All of
$10$ Hz, our measured value was $5.13$ mV. In the
end, values are in mV; we took $36$ sets of data points.