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Re: Build own capacators



Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>

At 05:23 AM 12/16/2005, Tesla list wrote:
Original poster: "david baehr" <dfb25@xxxxxxxxxxx>


for sure, as far as transporting, them big ol' oil filled caps suck,......ok, I want to try an MMC. I need a value of about .035mfd , how many caps do I need ???

The standard MMC cap in the string is 0.15 uF, so putting 5 in series will get you to 0.03. 4 in series would be .0375, and there's the rub... The voltage rating in either case is likely to be too low (10kV in the first case (for 2kV caps) and 8kV in the second).

So... lets say you put 10 in series, so the string is 0.015, and then put two strings in parallel (or, alternately, make up 10 parallel pairs, and string those).

That will give you 0.03 total at 20kV rating.

20 caps at $3 each is $60



Whats my cost $ ?  Does an mmc really out perform a oil/rolled cap ??


From:  "Tesla list" <tesla@xxxxxxxxxx>
To:  tesla@xxxxxxxxxx
Subject:  Re: Build own capacators
Date:  Thu, 15 Dec 2005 19:53:53 -0700
>Original poster: tesla popp <teslas_lab@xxxxxxxxx>
>
>I will publically applogize for hurting the feelings
>of good ol' Matt.  My point is this (and lets end it
>here): if you want your coil(s) to last FOREVER,
>Forget about homemade capacitors.  Any new comer that
>has the desire for a Quality coil should build an MMC!
>SIMPLE AS THAT...
>
>If you truely belive that you "MUST" build a messy,
>cumbersome, oil filled homemade cap; build it with the
>understanding that it will inevitably FAIL.  Unless it
>takes up more space than your entire coil itself it
>will die!  This has been proven time and time again.
>
>I can count on one hand, the number of coilers I know
>whos homemade caps have lasted thru the years.  And of
>those coils that use such capacitors, the preformance
>is nothing to brag about either.
>
>So go ahead and motivate yourself however you see fit.
>  But when it comes time to pack your coil in the back
>of your car for the big show;  I'd like to see you put
>all those bulky leaking caps back there along with the
>rest of your coil in less than a miunit like I can!
>
>Ok, I'm done ranting, take the facts for what they
>are, FACTS...
>Coiler Forever: Jeremiah Popp
>
>
>
>--- Tesla list <tesla@xxxxxxxxxx> wrote:
>
> > Original poster: Mddeming@xxxxxxx
> >
> > In a message dated 12/15/05 3:57:15 P.M. Eastern
> > Standard Time,
> > tesla@xxxxxxxxxx writes:
> >  >Original poster: tesla popp <teslas_lab@xxxxxxxxx>
> >
> >  >Matt, you're missing the real point: HOMEMADE CAPS
> >  >SUCK!
> >  >Excuse me for being so blantent, but if you can
> > tell
> >  >me even ONE instance where a home capacitor has
> >  >Out-Preformed, Outlasted, or been "More Compact"
> > than
> >  >the cd942 MMC (when made properly), I will belive
> > that
> >  >there is a future for the homemade cap!
> >
> > I am not missing what you call the "real point" . I
> > was merely
> > pointing out that there is more than one significant
> > "point": that
> > being that there is more to what motivates some
> > humans than just efficiency.
> >
> > <;-)
> >
> >  >Yes I AM stepping on some peoples toes here, but
> > it's
> >  >NOT because Im an a**hole.
> >
> > Oh No? ? I guess one needs a much longer personal
> > temporal axis to
> > appreciate different aspects of creativity.
> >
> >  > It's because I've wasted
> >  >TOO MUCH TIME AND MONEY building my own caps, only
> > to
> >  >have them fail!  I do care about the well being of
> > the
> >  >list members and I know how much it sucks to have
> > a
> >  >capacitor fail.  Please take my word on this, MAKE
> > AN
> >  >MMC!
> >
> >
> > For the majority for whom efficiency is their sole
> > motivating factor,
> > your suggestion is right on the mark.
> >
> >  >Im sorry to offend you who have lasting homemade
> > caps,
> >  >but I push my coils (and there caps) very hard,  I
> >  >just ran one of my twins for 48 minuts.  The only
> >  >thing that got warm was the tranny, THE MMC
> > REMAINED
> >  >COLD!  A run of 30+ minutes is very common here
> > and
> >  >only the cd942 MMC has been flawless and lasted in
> >  >this area.
> >
> > BRAVO! BUT it is irrelevant to the point I was
> > trying to make.
> > Someday you may understand why my neighbor has more
> > personal pride in
> > his horribly inefficient hand-made replica of a 1903
> > Oldsmobile with
> > tiller steering than he does in the Mercedes that he
> > bought new off
> > the lot last year, or why one of my grandsons is
> > building a
> > wood-planked sailboat.(with hand-sewn canvass and
> > hemp rope lines)
> >
> >
> > Coiler Forever: Jeremiah Popp
> >
> > PS: Cake mix won't EXPLODE and hurt you if you cook
> > it
> > to long.
> >
> > Have you ever seen a flour mill explosion?
> >
> >
> > Matt D.
> >
> > You might check out Maslow's work on the differences
> > in what motivates people.
> >
> >
> >
>
>
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