From: Paul
Date: Tue, 24 Oct 2000 10:03:57 +0100
Subject: Re: [TSSP] NSVPI - Early Results
RMC wrote: > What do we expect to see as the drive power to the resonator > is increased? The approximately sigmoid graph might steepen at > the top as breakout occurs and the forward current increases, > dropping more volts across turns perhaps. My guess: Equalising out the induced voltage across all the turns I should think, flattening the gradient curve, moving the gradient peak more towards the midpoint, voltage profile changing more towards a linear rise. A rough idea of the amount of load non-linearity could be obtained by plotting rms topvolts against rms base current, as the CW input power is turned up. Should be a straight line increase until breakout, then curving down towards level. If Fres is plotted as well, from all this info we should be able to calculate the effective impedance of the breakout loading as a function of topvolts. Alternatively, remembering that Terry has a topload current monitor, in conjunction with a topvolts probe and a scope in vector mode, it should be fairly straightforward to plot the breakout load Z mag and phase as a function of topvolts directly. The measured Ibase could then be compared with the expected value from simulations based on the measured Zload. Regards, -- Paul Nicholson, Manchester, UK. --
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.