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Is the Frequency of Current Noise Voltage Dependent?

  1. Dec 20, 2011 #1
    Hello I have been doing a set of experiments in order to try and measure the current noise of a thick film resistor. I basically attach a low noise, power supply, to a thick film resistor and slowly increasing the power supplies voltage to that resistor.

    I am noticing a strange phenomena when observing the FFT frequency plots.
    As I increase the voltage I can see that the current noise decreases in magnitude, yet increases in frequency. I thought that as I increased the voltage I would see the peak get bigger. Can anyone explain this (in terms of electrons bunching and releasing)? I have attached the frequency plots:

    graphnoise.jpg
     
  2. jcsd
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