From: Marco Denicolai
Date: Mon, 18 Jun 2001 10:23:06 +0300
Subject: Re: [TSSP] Some Considerations
Malcolm Watts wrote: > > Hello Paul, all, > I pondered your note on where we are at and what > needs to be done and have considered two points. > > #1 - Top Volt msmt. The real ugly sister. There seems to be two > possible routes, both of which can be verified as to their > disturbance of the resonator. It is clear that any msmt must be > "central" to the resonator axis to avoid distorting the electric > fields around it. > Hello all, my original idea was to model Thor (as I did) and then to use a capacitive voltage divider to measure the top voltage. The capacitive voltage divider would be one of those the HUT laboratory has got (high towers, professional $$$ stuff). Including the model of the divider in Thor's model it should be possible to infer about its correctness and about the voltage when the divider is not loading the coil. It would be also a matter of choice to retune the coil to compensate for the tuning ratio shift or just to ignore it, as that is modeled too. This idea might be silly, as I really didn't have time to refine it (or trash it :) ). Regards P.S. I mean, I just feel we have to abandon the idea to measure the top voltage unloding the TC. Instead, we can measure it with a KNOWN load and then "model out" its effect. -- _____________________________________________________________ Marco Denicolai Senior Design Engineer Tellabs Oy tel: +358 9 4131 2769 DSL Products mobile: +358 50 353 9468 Sinikalliontie 7 fax: +358 9 4131 2410 02630 Espoo FINLAND email: marco.denicolai@tellabs.com _____________________________________________________________
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.