Re: Symetric noise source vs asymetric
Good questions. I have no idea.
Negative noise? Positive noise? ...I don't think so. Even I don't know what are those.
This was a funny article at the 1st looking, then I couldn't identify my exact feelings. I felt some pain, but my knowledge is not enough to describe everything, especially the theory behind the statements, it can happen that every statements are true.... But take a look for this quote:
...the amplitude of the noise signal is asymmetric. This problem can be solved by using two transistors as two independent noise sources. / problem? but ok, independents, that is true I think.
One of these has a series resistor to earth, and the other has a series resistor to the supply line. / Still ok, supply and gnd referenced sources...however noise sources, so is it important?
Each of these noise sources produces an asymmetric noise voltage, with opposite asymmetry. / what? independents but they have opposite signs? ..sorry, opposite asymmetry? ..what does that mean for noise????
If these two voltages are combined, the amplitude of the result will be symmetric." / These are so demagogue statements, it describes noise as sum of voltages and I have no idea what is this asymmetric or symmetric noise. Google neither helped.
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So sorry, I can't help you. My knowledge is not enough here.