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In Reply to: RE: Any scope photos of different resistors... posted by rick_m on December 26, 2014 at 07:45:15
Actually resistors do measure quite differently. Vishay has released several PDF files on this comparing the different types. carbon comps are usually noisier but do have a nice tonal quality to them. Carbon film are a bit quieter, next are metal film, then lower noise than metal film are wire wound. Metal foil are the quietest of the resistor types, but few if any mfgrs use all 100% metal foil resistors since the cost is so high.
Follow Ups:
Metal foil resistors are not quieter then wire-wounds
I did this research a few years ago I wish I could post it.
and IMO metal foils sound bla, clear but don't pass the musical information in a dynamic way.
Lawrence
Well, we agree...
I didn't mention metal foil because I don't have any experience with them.
Resistors are like any other passive: despite what we call them they are all multi-pole, temperature (actually radiation in general), Vib. frequency and level sensitive networks.
But that makes their names ackward so we cut corners and just refer to them by their hopefully dominant characteristic, the item that we WISH was their only feature!
Actually once in a while you can cash-in on more than one like using WW power resistors as Q reduced RF chokes. But not very often...
Rick
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