Hi Bryon,
Just to clarify, I think that in number 3 you are referring to other fuse-related variables, perhaps unexplainable ones.
Also, where I referred to rectification, filtering, and in some cases voltage regulation as reducing the magnitude of the noise components shown in the reference you provided, I should also have mentioned power supply rejection ratio. Which is to say that extraneous frequency components that may be present on the DC voltages which power the circuit stages that are directly in the signal path will not directly sum together or intermodulate with the signal. In a good design only a tiny fraction of those extraneous components will affect the signal. That is particularly the case if their frequencies are very low and therefore can't couple through stray capacitances or radiate. The noise frequencies shown in the reference you provided are of course very low.
Best,
-- Al
Just to clarify, I think that in number 3 you are referring to other fuse-related variables, perhaps unexplainable ones.
Also, where I referred to rectification, filtering, and in some cases voltage regulation as reducing the magnitude of the noise components shown in the reference you provided, I should also have mentioned power supply rejection ratio. Which is to say that extraneous frequency components that may be present on the DC voltages which power the circuit stages that are directly in the signal path will not directly sum together or intermodulate with the signal. In a good design only a tiny fraction of those extraneous components will affect the signal. That is particularly the case if their frequencies are very low and therefore can't couple through stray capacitances or radiate. The noise frequencies shown in the reference you provided are of course very low.
I will do my best to A/B, A/C, A/D, B/C, B/D, C/D them. It's certainly not science, but it's something.I have no doubt that your comparisons will be more thorough and disciplined than many others, and therefore more meaningful.
Best,
-- Al