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Madeline Horn added textit_Johnson_Noise_To_perform__.tex
over 8 years ago
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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: we started with 10 Hz, 30 Hz, 100 Hz, 300 Hz, 1000 Hz, and 3000 Hz. We varied our low pass filter as follows: we started with 0.33K Hz, 1K Hz, 3.3K Hz, 10K Hz, 33K Hz, and 100K Hz. We recorded all the values from the multi-meter for each combination of filters. For example, when we had a low pass of 0.33K Hz, a high pass of 10 Hz, our measured value was $5.13$ mV. In the end, we took 36 sets of data points.
