[Milsurplus] Resistors and capacitors

[Charlie L.]

I used to be on a couple of forums on vintage stuff, but quit as I could
not stand the bad info, and lack of knowledge by the list experts.  I have
milsurp  and amphone as my only ones now.

So here is my question since the carbon resistor thing was brought up.  I
know that wirewounds should not be in tuned circuits unless the
non-inductive style and those are a bit iffy, , but after that, with all
the options on non wirewound we all use for prices I have seen as low as
.007 cents each and $1 buys you 140 of them, is there a composition style
more suited for each circuit?

The next is small value capacitors,  film, polystyrene, polypropylene,
polyester,  MLCC ceramics.  I have used the most economical from a known
manufacturer for most of my changeouts involving the old paper caps, and in
audio interstage coupling, but again, is there a rule of thumb for picking
and choosing a cap material based on circuit use, bypass, audio, etc?
Again, the audiophile sites have their opinions based on fidelity.  Prices
for cap styles can swing greatly too, silver mice and stacked silver mica
can cost you several dollars just for one, even on Amazon.

I have some old gear, especially my Heath TX1 that still has good and the
original electrolytics in them, but from manf. info and actual work
experience where we changed out every single aluminum electrolytic cap in
power supplies on a 7 to 10 year cycle to maintain system reliability, how
have the aluminum caps been holding out for everybody else.  The aluminum
caps also age as they sit on the shelf and have a nominal 10 year life
expectancy.

Charlie in NC
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20250819/e320b898/attachment.html>