I disagree. I think you are probably observing the change in capacitance. I agree that the higher frequency components associated with the square wave rise time is the measurement excitation.
Jim On Tue, 30 Aug 2005 10:00:23 -0700, Ron D'Eau Claire wrote: >Jim wrote: >Yes, if the measurement is made at a sufficiently low frequency, Xc is >insignificantly low. >--------------------------- >The measurement is made at H.F. I'm sorry, I apparently confused the issue >by saying the applied square wave was at 60 kHz. That's NOT the measurement >frequency. The edges of the square wave include components extending through >the H.F. range, at least. The inductance is measured directly by noting the >effect it has on the edges of the square wave. >The advantage of that system is that it measures the inductance directly. >And a shift in the inductance of about 9% was observed by scrunching the >turns together. >Ron AC7AC _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
