Re: Variac Wiring

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Yurtle Turtle <yurtle_t@xxxxxxxxx>

If you later on decide you could use 140 vac out, you
can always reland your hot input terminal, like this:

http://www.hot-streamer.com/adam/variac_mod.jpg

That will effectively shorten your input turns, and
allow the wiper to go farther than your hot input
resulting in higher output than input. You can count
the total turns and calculate where to move your new
tap point, based on the output volts you want. I
wouldn't shoot for more than 140 out though.

Adam


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

> Original poster: "Barton B. Anderson"
> <bartb@xxxxxxxxxxxxxxxx>
>
> Yes Matt,
>
> You've got it correct for what you described. #3
> will be the output
> which you can adjust from zero to full voltage. So,
> wire the output
> (the load) from neutral (#2) to the variable output
> (#3). Often,
> variacs will have several more terminals. Your
> variac sounds nice and
> easy with just three terminals.
>
> Check the output from #3 to #2 measuring the voltage
> prior to hooking
> it up to a load. Vary the dial and you should see
> the output vary as
> expected. Once you've verified the voltage vary's
> from zero to full
> voltage, then go ahead and hook it up to the
> transformer.
>
> Take care,
> Bart
>
> Tesla list wrote:
>
> >Original poster: Slurp812 <slurp812@xxxxxxxxx>
> >
> >Yes, I believe thats correct. To be super proper,
> make sure neutral
> >goes to #2, and hot goes to 4.
> >
> >
> >
> >On 2/7/07, Tesla list <tesla@xxxxxxxxxx> wrote:
> >
> >>Original poster: "Matt T."
> <p2sarethebomb@xxxxxxxxxxx>
> >>
> >>
> >>I recently bought a new variac to power my 15kv
> 30ma NST.  I have
> >>never wired one before and do not want to fry this
> one.  It is a
> >>Technipower 120v-8.5A 60 HZ (W5L) .  It has 3
> terminals listed as 2,
> >>3, and 4.  There is a diagram showing 2 at the
> biginng of the coil
> >>and 3 bing the center tap with 4 the other end of
> the coil. Am i
> >>correct to connect the input to 2 and 4, and the
> output to 2 and
> >>3?   Seems simple, but i don't want to fry this
> considering how
> >>pricey they are now a days.
> >>
> >>Any help is greatly appreciated
> >>
> >>-Matt
> >>
> >>
> >>----------
> >><http://g.msn.com/8HMBENUS/2743??PS=47575>Laugh,
> share and connect
> >>with Windows Live Messenger
> >>
> >
> >
> >
> >
> >
> >
>
>
>
>
>




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