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Re: flat caps
Tesla List wrote:
>
> > Subject: Re: flat caps
>
> Subscriber: pwac-at-flinet-dot-com Sun Feb 16 13:53:03 1997
> Date: Tue, 04 Feb 1997 13:08:51 +0500
> From: Jeremy Bair <pwac-at-flinet-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: flat caps
>
> Tesla List wrote:
> >
> > Subscriber: Esondrmn-at-aol-dot-com Sat Feb 15 15:44:40 1997
> > Date: Sat, 15 Feb 1997 03:00:16 -0500 (EST)
> > From: Esondrmn-at-aol-dot-com
> > To: tesla-at-pupman-dot-com
> > Subject: Re: flat caps
>
> <....
> ....>
>
> > I recently made one that is .00475 mfd with two layers of .062 poly (for each
> > layer) and those plates are 47" long. This cap just barely fits into a 6"
> > pipe section.
> >
> > Ed Sonderman
>
> I have been taking apart small Capatictors just to get an idea of how
> they are arranged, I was amazed to open some of the rolled ones, they
> are awsome! After realizing it, all my caps I have ever used were rolled
> (About a year ago, I opened one for the first time to discover metal
> plates and tons of oil, now I can't find that one again!). I think
> rolled caps would be better for me. Let me ask you though, some small
> ones I opened (200V-at-220uf) had a sort of paper and metal materials
> soaked in oil, was this 'paper' like material a plastic? It was so
> soaked, I can't tell what it was, and how come to two windings of metal
> are different materials, one is shinnier than another.
>
> And did you use an oil?
>
> <...you would need plates of
> 1010 square inches / 14" (std. width of roof flashing) = plates
> 72.14"...>
>
> Roofing Flashing? Wasn't that material thick? What is wrong with using a
> whole roll of Aluminum Foil?
>
> Jeremy Bair
Jeremy
I built, with the help of a high school student, 4 flat plate capacitors
using 0.060" LDPE. The capacitor was arranged in a binary format of
200, 400, 800, 1600, 3200 and 6400pF. 4 stacks were assembled,
mechanically compressed with fibergalss plates, assembled on the top
lid of 2.2 gallon standard rubbermaid rectangular containers. The
capacitors have 1.00 in" clearance (aluminum to sides) and was
built using heavy duty Aluminum wrap taped in diagonal corners to
hold in position. The entire assembly was then filled from the top with
about 1.0 gallon of transformer oil in each container. Two units were
used in a parallel bank and the two banks were used in a balanced
"Tesla equidrive" in TCBOR parlance, small 1.0KVA+
magnifier powered by an 11KV non shunted radar transformer (460VA
nameplate). The capacitors have worked fine for 2years + and the
system will consistently produce 36+" sparks, and occasionaly approach
40" spark. The binary coded capacitors arrangement allows 32 tune
points balanced, 64 points if one step unbalance in allowed, NOT
INCLUDING THE PRIMARY TAPS!! This system if memory serves me right
had well in excess of 200 discrete tune points. Maximum output is
achieved between 0.01 and 0.012 uF (total tank capacitance).
Dave Sharpe, TCBOR