Madeline Horn edited subsubsection_Johnson_noise_in_1K__.tex  over 8 years ago

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\subsubsection{Johnson noise in $1K$ Ohm Resistor}  Our settings for the Noise Fundamentals devices were as follows: $1K $1k  \Omega$ resistor, we used a Gain 1 (G1) of $\times600$ for all values that comes directly from the Noise Fundamental device, a Gain 2 (G2) of $\times1000$ for all values, we used a room temperature of $296$ degrees Kelvin, and we varied the high and low pass filters' frequency for each data set in order to vary the bandwidth. In Table \ref{table:Johnson1}, 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 in \ref{table:Johnson2} are explained by the following equation: