[Eeyore]

Prune wrote:

I was talking about this:
http://www.vishay.com/docs/49435/49435.pdf

Much of it is marketing, of course, but Table 1 is interesting and they say
these are measured results of this current noise (as opposed to the regular
thermal noise) they are talking about.

Having read it in more detail now, I'm inclined to complain to Vishay about some
of it's content which is plainly incorrect !

They can't even spell Boltzmann correctly ( as in his constant ).
http://www-history.mcs.st-andrews.ac...Boltzmann.html
http://en.wikipedia.org/wiki/Ludwig_Boltzmann
http://en.wikipedia.org/wiki/Boltzmann's_constant

They fail to mention carbon film which is very widely used. Instead they mention
only the truly miserable carbon composition which is long obsolete and today
unobtainable, I guess to make their product look fancier in comparison.

Some 'authenticity nuts' like to use carbon composition of course, which says a
lot about their mental condition !

They make claims anbout 'noise free resistors' when such things don't even
exist.

And several other example of total ******** such as
" The major objection to wirewounds, however, is the inductance that chops the
peaks and fails to replicate the higher frequencies of the second and third
harmonics."

I'd question their figures for metal film too.

Definitely written by the marketing dept and a poor show on Vishay's part.

Graham