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Old October 16th 07, 11:47 PM posted to rec.radio.amateur.boatanchors
Scott Dorsey Scott Dorsey is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 774
Default Paper capacitor recap opinions?

COLIN LAMB wrote:
I third the motion. You can actually calculate the needed capacity in any
particular circuit, whether it be bypassing or coupling. The chance that
any particular .05ufd capacitor originally used by the reeceiver
manufacturer would be the calculated value is about as as slim as finding a
nice SX-88 at a landfill. Ballpark is close enough, unless it is in a tuned
circuit.


Note that some of these WILL be in tuned circuits, and you'll almost certainly
need to realign the receiver with a sweep generator afterward. But that is
not a bad thing.

And, the capacitors usually have a tolerance far greater than the .03 ufd
difference.


Yes, figure 20% tolerances on those things.

Use the .047 and do not give it another thought.


If you really worry, you can get .05 uF orange drops.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."