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RE: [TCML] getting more performance out of my coil
Hello Norm,
I remember being brand new to Tesla coils; how fun was that? The ocassional shock, not unlike a pregnancy scare! "Am I going to die? Are my nerves fried?"
When it comes to increasing performance, I would recommend using a variac with its output from zero to 140VAC, as well as , if possible, using an MMC rather than three series capacitors. If you can, you should get slightly closer to resonant, in my opinion. However, you may want to reduce the current loading on each of the capacitors by putting them in parallel strings.
I would recommend above seven nanofarads, just to be careful. Perhaps the primary should be at a conical angle, rather than a pancake coil.
Good luck!
- Christopher Karr
> Date: Tue, 12 Jan 2010 11:24:39 -0800
> From: ndsteppii@xxxxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: [TCML] getting more performance out of my coil
>
> this is my first coil and i knew nothing about TC's before this two months ago. I am only getting 14.5" sparks to ground(not verry efficent) This coil was built on a very tight budget(found trans for 10$,static gap is two 5\16 carrage bolts w/ high power comp. fan, salvaged magnet wire, sewer pipe, ect. total cost of coil was 150$)
> My coil setup is as follows: secondary winding height of 23" w/ 24 awg, 1070 turns. secondary diameter 4.25" primary .25" od. tubing spaced .25"@ 15 turns. 9000\20ma NST trans. tank caps are two 15kv/.02uf in series for a total of 10nf, where optimum resonance is 5.9 and optinum LTR is 9.5. I have more of these caps, so would it help performance any to have one string of three @ 6.67nf(a lot closer to resonant)then adjust the tap on my primary acordingly? also could i run a variac to boost output? can't really afford a new trans at this time, in the middle of buying a house.
> thanks, Norm
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