RE: Looking for Voltage Control Switch Ideas

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Yurtle Turtle <yurtle_t@xxxxxxxxx>

I used Visio, then "printed" it using Acrobat.

As to the filters, I have four, so why not? Actually,
I'll probably end up paralleling the legs and use all
four, one per leg for each location. I have had
problems with flashovers in my variac from my smaller
coil, so I feel like I need one between my controller
and my PSU. Since I have several, why not place
another one where the power enters? I also added a
TVSS, since I happen to have one. Don't know if it
will do anything or not. I may monitor the ground to
see if anything's going on while running. I've also
decided to use my 18 kV lightning arrestor on the HV
side of my pig. I figure I'll wait until I finish
before I "asbuilt" my scematic.

I'm also adding a key switch which will power the
Powerstat Drive without engaging the contactor. That
way I can adjust the powerstat up or down before
supplying power to the coil, and after an e-stop. I
looked at automating this, but it got kinda crazy with
relay logic, and I'm not quite ready for a PLC yet.
When I finally win a good cheap VFD on eBay, I'll
probably get one then.

Adam

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> Original poster: "Cameron B. Prince"
> <cplists@xxxxxxxxxx>
>
> Hi Adam,
>
> That's a nice looking schematic. I'm curious as to
> what you produced it
> with. Also, are the dual filters precautionary or do
> you see significant
> benefit by having one on either side of the variac?
>
> Thanks,
> Cameron
>
>  > -----Original Message-----
>  > From: Tesla list [mailto:tesla@xxxxxxxxxx]
>  > Sent: Friday, August 19, 2005 10:06 PM
>  > To: tesla@xxxxxxxxxx
>  > Subject: Looking for Voltage Control Switch Ideas
>  >
>  > Original poster: Yurtle Turtle
> <yurtle_t@xxxxxxxxx>
>  >
>  > I'm in the process of making a controller for my
> big
>  > coil:
>  >
>  >
>
http://www.hot-streamer.com/adam/bigass_coil/coil09.jpg
>  >
>  > I'm more or less building this:
>  >
>  >
>
http://www.hot-streamer.com/adam/bigass_coil/schematic.pdf
>  >
>  > I have two 1256's with a motor drive:
>  >
>  >
> http://www.hot-streamer.com/adam/garage/variac01.jpg
>  >
>  >
> http://www.hot-streamer.com/adam/garage/variac02.jpg
>  >
>  > The motor drive can be driven by a spdt switch or
> pulse
>  > driven. The drive speed is adjustable by a pot.
>  > I'm planning on using a spdt switch. I'd like to
> have a
>  > fairly large switch that is spring loaded so I
> can push it
>  > forward to increase voltage and backward to
> decrease it, with
>  > a spring returning to center. I need some ideas
> for a cool
>  > looking switch. some thoughts were a Hurst
> shifter, a boat
>  > throttle, or maybe a computer joystick. Does
> anyone have any
>  > better ideas?
>  > I can always rig up several limit switches to a
> non-switch
>  > device, such as a car shifter, but I'd prefer
> something that
>  > is already a switch. I've looked around for
> industrial
>  > switches like this, but haven't found anything.
>  >
>  > thanks
>  > Adam
>  >
>  >
>
>
>