From: boris petkovic
Date: Tue, 24 Oct 2000 04:00:31 -0700 (PDT)
Subject: Re: [TSSP] Q goes a long way
snip> > > 1)To measure Q of heavy wire solenoids having no > coil > > form material within its cavity and isolation > around > > its cooper wire (except air of course). > > 2)To compare measured and predicted values for Q > > I agree. It may be better however to take an > existing coil > which shows anomalous high loss and add *more* > dielectric, > say for example insert another, smaller, tube of the > same > material inside the coil, to see if the loss goes up > significantly. > > Or perhaps better, take a coil for which the Q > predictions > do match, and use it as a 'sample chamber' into > which sample > tube materials can be inserted and the additional > loss calculated > from the Q change. > --- This is not a bad idea.However you'll always have some dielectric loss in isolating material no matter what kind of it you use. I was rather thinking on possibility how much close one may go with the prediction to the real Q if completely exclude dielectric form losses. Regards, Boris __________________________________________________ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.