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Re:REAL CAPACITOR (where can i buy one?)
Original poster: "ebyng by way of Terry Fritz <twftesla-at-uswest-dot-net>" <ebyng-at-netlimit-dot-com>
ok, here we go....
MMC's, in your terms "do not suck".
Properly tuned, they work just as well as "normal" single body caps.
Having loads of cash is only part of the equation here, there are other
considerations as well
1: Do you have a flatbed truck and a forklift??? Most of the larger (+/-
50Kv) Mallory brand caps run in excess of 100+ Lbs. Shipping will kill
you, straight out, and moving it will have to be on a hand truck, minimum!
Some of the older GE NOS Mil stuff that youll find will last forever, but
weigh in at +250Lbs (I have one.. :-))
2: MMC cap systems are modular, large singles are NOT. Blow a smaller MMC
string, and the rest are still good. Blow a Single GE cap, and you've got
a 300lb paperweight.
3: Small MMC's go "bang" if you blow one, and shower you with tiny bits of
tinfoil. Large single caps go "KaBANG!!!!!!!!!!!!!!!!!!!!" and insert 1"
pieces of oil covered shrapnel into your frail pink body when they fail.
It's like hitting a "dumbell" style bomb with a ballpeen hammer in your
bare hand..........
If your bent on having a single body cap, though, here's a couple of
things to try..
1: EBay, the scroungers friend. I personally know of, at this point....
http://cgi.ebay-dot-com/aw-cgi/eBayISAPI.dll?ViewItem&item=1226868439
and..
http://cgi.ebay-dot-com/aw-cgi/eBayISAPI.dll?ViewItem&item=1226870337
2: www.cornell-dubilier-dot-com They'll build you a nice cap, custom, but
for a price.
You might also want to check out Mallory Capacitors, and Maxwell.
They make some D-at-#$ big caps....
Best of luck, and dont be biased against MMC's!!
Erik
"Build a reactor in your house, help stop the energy crunch!"
----------------------------------------------
Original Message
From: "Tesla list"<tesla-at-pupman-dot-com>
Subject: REAL CAPACITOR (where can i buy one?)
Date: Mon, 09 Apr 2001 18:42:11 -0600
>Original poster: "Drew Murray by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<drewallmighty-at-hotmail-dot-com>
>
>Hello Everybody,
>Yes, it's me ....DREW!
>I'm Back and i am aiming to get my coil working better than ever. You may
>remember some of my earlier posts from before the science fair such as:
>DArN CAPACITORS
>My PT is loud!
>and so on.
>I won second place and $80 (measly i know) in the physics category at the
>new brunswick provincial science fair that was held at the university of
>moncton.
>I am now using my coil to put on shows during intermission at school plays
>and variety shows. It has gained me a lot of popularity. (HE HE)
>I am 15 years old and i am making nearly 4 foot long sparks with my ,so
>called masterpiece of a tesla coil! People call me a genius and stuff.
>I am rather tired of frigging around with square sheets of plastic and al
>foil for my capacitor. It worked pretty good for an uncalculated
capacitor.
>Vapor barrier melts! 1 gallon zip lock bags do not melt, this makes them
>much better for dry capacitors. I wonder why this is. Anyway, i better get
>to the point. I have the school's permission to buy a capacitor with
pretty
>much an unlimited budget. I have lots of cash and i want a capacitor that
>will make my tesla coil kick!
>I want a professional Polypropylene pulse discharge capacitor, so where do
i
>buy one? I am in New Brunswick, Canada, so i want it from a company that
is
>somewhere on this side of the planet! I am not really interested in MMC's
>because i have heard from a reliable source that they suck, performance
>wise, compared to professional pulse caps.
>I have a 1kva 120:4200 PT and i am feeding 300v into it. I am using a 20
ohm
>4.5 amp max rheostat and a burned out 250va 10000v oil burner igniter in a
>series with the pt for current limiting. I have no idea what is coming out
>of the PT, except that it is somewhere around 10500v. I have been running
it
>this way for a few months now and it never gets warm. Is there some way
that
>i can calculate just what is coming out of it so i can determine what size
>of capacitor i will need.
>Any help, advice and/or comments would be greatly appreciated!
> Sincerely,
> Drew Murray
>
>Notes: Always build a plate capacitor with a little higher capacitance
than
>required if you are going to have it in mineral oil. The plastic will
swell
>and lower the capacitance drastically, causing performance to lax.
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