It's unpolarised and probably a paper or plastic film dielectric cap. Had it gone leaky?
On 03-May-11 23:20, Chuck Grandgent wrote:
I know this is off topic, but I also know someone here will certainly know. Air Conditioner guy was out today for annual maintenance, the air mover had a 15uF motor start cap that he measured at 7uF, so we replaced it. No quarrels with that, but here's what I couldn't understand. I tested it on my cheapo DVM, which I rarely use for cap testing, and the capacitance reading just kept going up and up and up, 20uF, 30uF, 40uF, etc., clearly not right. I grabbed a 22uF electrolytic, and that quickly stabilized on my DVM as 19uF, on the tech's meter (better than mine) 23uF. So that was believable. Now I really don't know much about motor start caps, but they are "unpolarized", compared to electrolytics ? How to account for its anomalous behavior with my DVM ?   Chuck, K1OM _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
-- Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937 825 5032 Amateur Radio G8IFF W8IFF (was KC8NHF 9H3GN), e-mail [email protected] www http://www.ngunn.net Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club International #385, Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC, GCARES, XWARN, EAA382. _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
