Madeline Horn edited subsubsection_Johnson_noise_in_1K__.tex  over 8 years ago

Commit id: 7dbf531f8000f98d862e29a98748bd8dbf309e05

deletions | additions      

       

Our settings for the Noise Fundamentals devices were as follows: $1K$ ohm resistor, we used a Gain 1 (G1) of $600$ for all values that comes directly from the Noise Fundamental device, a Gain 2 (G2) of $1000$ for all values, we used a room temperature of $296.15$ degrees Kelvin, and we varied the high and low pass filters' frequency for each data set in order to vary the bandwidth. In Table 1, you can see how we varied the low pass filter (f2) and the high pass filter (f1) in order to change the bandwidth. The values are taken from the multi-meter after going through the filters, gain, and multiplier - passing through the $A \times A$ multiplier and then being divided by 10 Volts. All of the values are in mV; we took $36$ sets of data points. You can see all these values in \ref{table:Johnson2}.  The values below are explained by the following equation:  $V_{\textrm{meter}} = (^2 + ^2) G_1 G_2 / (10 \textrm{Volts}) \textrm{ [mV]}$