Re: Hello

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Jared E Dwarshuis <jdwarshui@xxxxxxxxx>

It is yery difficult to exclude all the air between the sheets of
polyethelene for a rolled capacitor.

If you make your capacitor using a PVC pipe for the housing, then the
large coeficiant of thermal expansion for the plastic causes all the
metal fittings to become loose and then they leak endlessly. (oil is
thinner then water)

I made a nice set of rolled capacitors and they worked great, except
they leaked. Now they are in the landfill where they can happily leak
to eternity.

Flat plate capacitors work nicely and you can build them to withstand
severe service (like 80kv), But finding a really good container to
stick them in has eluded me.

I like the Maxwell capacitors myself, you can get used ones for a
reasonable price and will spend about the same amount of money as the
MMC for similar voltage ratings.

Jared Dwarshuis