From: Paul
Date: Tue, 29 May 2001 23:43:22 +0100
Subject: [TSSP] Newsletter 29/05/01
Hi All, We've had a few recent additions to the project list, so that's an excuse for a quick newsletter. List Archives ------------- TSSP list archives are now available through http://www.abelian.demon.co.uk/tssp/list/ Threads are listed in the order the date started, oldest first, and postings are listed under each thread in date order. Its a bit rough and ready, let me know if there are any problems. I'll refresh the archives once a week or so. Don't bother book- marking postings, the URLs will change. Software -------- Following recent progress on time domain modeling we now have a vast amount of new code in the simulator. I've a mammoth job on now to tidy it all up and get it documented before I forget how it works! For this reason I'm going to try to keep a low profile and plod on with it. Website ------- Project website is at http://www.abelian.demon.co.uk/tssp/ Its very out of date right now. Time Domain Modeling -------------------- Is coming on OK. One of two fiddly bits to sort out in the code. Have to hold the program's hand at the moment to steady it through the process of locating the normal modes in the complex frequency space. See the landscapes of the determinant in pn1401 - the task is to locate the points where all four complex quadrants meet, using as few determinant evaluations as possible, and to do so for all manner of load conditions. Hmm... See the webpage at http://www.abelian.demon.co.uk/tssp/tfss270501/ for Terry's recent quantitative comparisons, using his solid state gap. Theory Docs ----------- Basic theory notes, http://www.abelian.demon.co.uk/tssp/pn2511.html now has a couple of extra sections covering input and output impedances. Nothing too exciting, unless you're a CW man with insomnia. http://www.abelian.demon.co.uk/tssp/pn1401.html The next lot of theory notes, at http://www.abelian.demon.co.uk/tssp/pn1401.html are still under construction. Nothing added recently, and the last section on modal decomposition needs some significant changes. Haven't had much feedback on pn1401 - are there no mistakes? (Hmm ... I assume everyone is carefully checking this stuff? :)) Ongoing Work ------------ Prediction of breakout voltages using E-Tesla. Search for a topvolts measurement technique. Measurements of CW brush discharge impedance. Determining whether initial excitation of higher modes has any bearing on tuning, operation, and losses. Plus, as always, whatever opportunities present themselves for making further experimental checks on the software. Let's make a determined effort to close the loop on optimisation by figuring this non-linear loading stuff out. Mailing List ------------ If you no longer want to receive tssp list postings, then email to majordomo@abelian.demon.co.uk and put unsubscribe tssp in the body of the message. Regards All, -- Paul Nicholson, Manchester, UK. --
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.