Re: Dissapointing and confusing Results with MMC

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Esondrmn-at-aol-dot-com>

In a message dated 2/9/02 8:15:37 PM Pacific Standard Time, tesla-at-pupman-dot-com
writes:


>
> After my other cap died on me (35kv .035 uf) I decided to upgrade to an MMC
> which I built to 18 kv .05 uf tested at .046. My primaries are 2 NST's 9kv
> 60ma each. After hooking up the new cap, I had shorter sparks and it
> operates very inconsitently. Maybe 1/5 times it works, 4/5 times it makes
> this buzzing noise and then I turn it off, turn it on, etc. Another thing is
> that when I ground the primary and secondary, the coil doesn't work at all
> and doesn't making the buzzing noise. With the old cap I had about 20 inch
> sparks(measured to ground), and with the new (i'm guessing) about 8-12 inch
> sparks. I should also note that I do not have a terry protection circuit
> installed, nor do I have any real resistors in the MMC (Instead I just
> hooked up the leads from each cap with folded peices of tin foil). Please
> Help
>
> CJ




CJ,

Since your coil was running well with a .035 mfd cap, I assume that you
re-tuned it when you switched over to the .046 mfd mmc cap - correct?  Your mmc
caps must be soldered together and I would add resistors across each cap.  This
keeps the stress on the caps evenly divided and will discharge the mmc when
power is removed.  Are the mmc caps that you used know to be ok in this
application?

Ed Sonderman