I suspect her use of plywood may be affecting the results. Various glues an=
d
possibly other varieties and orientations of wood below the surface would
tend to carry the current in different directions.=20

Who needs a computer for fractal art?! This stuff is beautiful.

Allen

> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
Of
> IVP
> Sent: Friday, January 23, 2015 4:04 AM
> To: Microcontroller discussion list - Public.
> Subject: Re: [EE] Very high voltage question
>=20
> > Solution: drive the primary windings in opposite phase with respect
> > to each other and treat the inner connection of each secondary as
> > ground.  Now you have twice the voltage between the ends of the
> > outer leads on the secondary windings.
>=20
> The designer of the circuit has suggested driving the primaries in
> parallel, ie the same phase, and connecting the secondaries as you
> suggest, like a centre-tapped secondary with the CT grounded
>=20
> I've done one experiment on my list. Applying EHT through wood
>=20
> https://www.flickr.com/photos/97814409@N04/sets/72157648110410093/
>=20
> Need to do a bit of work on controlling the discharge path. Possibly
> oven-drying the wood to get the moisture content down, different
> electrode shapes and sizes, carved paths, etc etc.
>=20
> I saw this done on the program You Have Been Warned
>=20
> http://melanie-hoff.com/15000volts/
>=20
> Don't want to go full 8 x 4 as she's done, thinking more small
> scale for inlays. My pine example took about 10 minutes to cross
> the 100mm between the panel pins
>=20
> Joe
>=20
>=20
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>=20
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