Steve,
.....
And I don't have any measurements handy, but I have plenty of bad
experience with splices. Just last year, I had a magnetics house down in
Mexico wind 100 small coils for a customer of mine. These were for a
small self-tuning SSTC coil. After having each of the first (5) coils I
tested fail about 85% up the coil, i began to suspect that something was
amuck. Upon close inspection of the coils, i noticed a splice point.
After some discussions with the manufacturer, it was determined that the
coils were all wound initially, but too short, so they decided to splice
and continue winding the coil to spec.
Now electrically (with LCR meter), these spliced secondaries measured just
fine, and from visual inspection, you would never even notice the splice
unless you used a magnifying instrument. But when connected to a
self-tuning driver, they all failed at that splice point.
Now I certaintly don't claim to know all the theoretical and mathematical
explanations to why this occurred, and I'm *certaintly* open to
suggestions from other people regarding this, but I do know that they were
all failing at this point, and the only thing I can think of is some sort
of impedance discontinuity due to the splicing causing this problem.
So again, its my opinion that if you have a self-resonant system, i don't
recommend splicing your secondaries.
Daniel McCauley
http://www.easternvoltageresearch.com
DRSSTC, SSTC, Flyback Kits and Components!