Testing electrolytics under power

[Will White]

I don't know where I got this idea, but isn't it true that the only way to get
reliable test readings on *electrolytic* caps is with them in-circuit, under
power?

I ask this because the multi-section electro. cans in my AC-3 P/S test
slightly outside their nominal tolerances, in-circuit but fully discharged. I
bought some radial-lead new manufacture caps as replacements, but before I do
the work to R&R them, I'd like to know the old ones are really gone out of
spec, not just reading this way due to my poor test method. BTW, the P/S and
radio exhibit no hum or other symptoms when used with my TR-4

Should I test with power applied? If so, then do I simply attach one meter
lead to ground, the other to the cap lug terminal? Tanks es 73
--
Will White, KD7BFX

to reply, please click this link mailto:wcw at asu.uswest.net

--- --- --- --- --- --- --- --- --- --- --- --- --- --
To subscribe: listserv at listserv.tempe.gov
and in body: subscribe BOATANCHORS yourfirstname yourlastname
To unsubscribe:  listserv at listserv.tempe.gov
and in body: signoff BOATANCHORS
Archives for BOATANCHORS: http://www.tempe.gov/archives
--- --- --- --- --- --- --- --- --- --- --- --- --- --