>
>I am open to correction on this (Eu members should be able to confirm) but I
>think the standard Phillips product resistors are metal film and very
>stable.
Higher values of R may be carbon film. Values under 10? are typically
metal film. 10? - 100k? are usually metal oxide film.
Unless one performs a 1-hour overload test, "think" = guess.
For some applications, intrinsic L is important. An example would be
VHF/UHF parasitic suppressor service. For suppressor service, >15nH is
probably not good engineering practice. Measuring intrinsic L is not
easy. A 50W "non-inductive" Globar typically has c. 60nH - - - but so
does 15mm copper tubing of the same length.
cheers, Barry
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
end
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