Re: Tuning with two torids
Bill Langston here, the pig is in it's pen and wallowing happily --
Has anyone, that you know of, successfully used an actuator up the center
of the secondary (found a work-around on the inner spark issue)? I would
like to give that a try, and avoid reinventing the wheel if I can.
In your photo-resistor idea, were you thinking of a package wholly
mounted on the top of the secondary, below the lower torrid? If so, did
you have some thought about powering it.
Thanks for your time.
Tesla List wrote:
> Original Poster: "Jeff W. Parisse" <jparisse-at-teslacoil-dot-com>
> Terry & All,
> > > I would think the simplest way to move a top toroid up and down
> > >would be to run a plastic rod (like PVC) up the center of the
> > >primary, secondary, and first top terminal
> > Be careful doing this. I just had a spark go down the middle of my
> > secondary along a piece of pvc. It left a gouge and a burn mark all
> > the way down and then jumped to the ground connection.
> This is a VERY common failure mode. Many builders employ
> interior baffles on their secondary coil forms to prevent
> internal flashover. Having a structure that violates the internal
> insulation of a secondary is not the way to go IMO.
> The linear drive device that Terry referenced might work
> if it is rigged so as to be self-powered, shielded and remote
> A simple up/down control can be made using photoresistors
> (yes, low tech CadSulfide) and a laser pointer. Located on the
> "toroid height adjuster" will be two targets: UP and DOWN.
> Hit either target with a laser pointer and Bob's your uncle. No
> tether (fiberoptic or otherwise) and no 5v logic. True, you'd
> have to have good aim but that's what tripods are for...
> (Here we go...TWO laser pointers mounted on a common
> tripod. Up and down controls at your fingertips...)
> Jeff Parisse