Wire Guage and Q?
I am wondering about Q and how it relates to wire guage. My present
coil seems to be getting rather poor output. I have a 15/30 NST power
supply (I kicked it up to 60 mA a couple times because I do have a bunch of
other trannies) but my dad won't let me pump more raw wattage in until I max
out the coil at its present spec.
I have a 0.005 uF cap that's polyethylene sheeting, and I just moved to a
rotary gap that is now synchronous at 120 BPS. I am pretty sure it's sync
now that I modified it because the lights turn off when I run it until the
demand controller catches up.
Anyway, straight to the point. My secondary is on 7" dia T-600 PVC pipe and
24.5 inches of it are wrapped with 20 AWG wire. Most of the coils I have
seen comparable to my size are wound with at least 22 guage, some even up to
25. How exactly does Q come into play? I originally wrapped the secondary
with 20 guage because I read bigger guages get higher Q but also higher
My primary is 15 turns of 1/4" refrigeration tubing at a 35.5 degree angle
spaced 1/2". I think my secondary operates at about 300 kHz and I thought
with higher Q, precise tuning is required, but I can't see much difference
in output between the 13th and 15th turns on the primary.
If I made a new secondary with finer wire (23-25AWG) would my coil run
better? I tried to run my specs through WinTesla as best I could, but you
have to put in your desired output voltage first in the coil designer
instead of putting in your own specs and the program tells you what your
output should be.
It told me for 200,000 V output voltage (which I think represents a foot of
output) with my present power supply and 15 primary turns that I needed 25
guage wire on the secondary. Shoot! especially after all that work, AND
blowing $40 on a full 10 lb roll of 20 guage. I may be able to trade that
roll and some money for a roll of 24 guage or so, but need I do this? have I
really maxed out my specs?
Thanks, and Happy New Year!
Thank goodness Y2K didn't take down our beloved discussion list!
Get Your Private, Free Email at http://www.hotmail-dot-com