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Re: Thoughts about sync
Tesla List wrote:
>
> Original Poster: "Wayne Scott" <wsirons-at-sonic-dot-net>
>
> Hi all,
>
> My first coil has been up and running for about a month now. My thanks
> to everybody for being so helpful. There's no way I could have achieved
> this without my daily reading of the Tesla List. Enough kissing up,
> down to business.
> Specs: 15/30 NST, 4.5 x 22.5 (5:1) secondary, 1/4 in -at- 1/4 in 13 turns
> primary -at- ~35-40 deg and too far away from the secondary ~2.5 in. The
> cap is 10 GE Dielektrol III's .1 uF -at- 2000 VDC, .01 uF total (in about
> 1x2x2 oval metal can) in series which I expected to explode the first
> day I fired it up, but it still seems to work. The gap is 4 copper
> tubes for only 3 gaps and looks like about an 1/8 in between each.
> Topload is 3x13 and 4x17 aluminum duct. It gives 3 or 4 18 to 24 in
> purple streamers that really like the extra (unpowered) referegator in
> the back of the garage. It doesn't have much in the way of an RF
> ground, just a big plate of aluminum under it's box. I just won another
> eBay 15/30 NST and am looking forward to getting closer to the 48 in I'm
> hearing about from even 30ma systems. It sounds like the only way to
> break that barrier is to go rotary. I was wondering if anybody has
> tried using some kind of closed loop motor control to set bps as opposed
> to modifying rotors to be in line sync. Some kind of analog feedback
> signal routed through the necessary analog electronics could drive for
> sync, or perhaps a basic stamp running a PID from digital feedback. I
> know that the RF shielding of sensitive electronics would be
> interesting, but not impossible. Would also make it easy to auto-sync
> to the zero crossing. Thoughts?
>
> Wayne in Santa Rosa, CA
>
> I need to build an MMC!
Hi Wayne ...
congrats on the coil ... but if you plan on upping the power ( adding
the extra NST) consider deeply the idea of a RF ground system....
with out it you will be more than likely to blow out the NST's or get
some serious feedback thru the AC lines i fried a 20 amp Corcom RFI
filter cuz i forgot to hook up the ground wire sooo obviously the
power found its way back thru the AC supply ...
Scot D