[Boatanchors] Carbon Comp Resistors
w5jo at brightok.net
w5jo at brightok.net
Wed May 6 12:23:02 EDT 2020
My past experience has been that they will continue to change when in
service. If they are out of the marked tolerance I replace them with
ceramic types.
I recently found a NC 183D that had been sitting for years unmolested.
Every resistor I checked was within tolerance but, if I use the set
regularly, I expect to change them as time goes by. Who has a case that
shows the underneath of the chassis anyway. I want my stuff to work with
minimal repairs as long as I live.
Jim
W5JO
-----Original Message-----
I too have endless miles of old carbon comp resistors. And just about all
of them have changed value.IIRC, i have read where some have had success
bringing them back to value by heating them in an oven, but I think most
have discarded that treatment as ineffective.So ... my question is: can I
use a resistor that say, has drifted up 40% to 100K ohms as a 100K ohm
resistor? Is it apt to stay within 10% tolearnce after use?Guessing this
has been "asked and answered" but hopefully someone can indulge me on this
list.Thanks.JeffW8KZW
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