Re: mini coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "S.Gaeta by way of Terry Fritz <twftesla-at-uswest-dot-net>" <sgtporky-at-prodigy-dot-net>

Hi Robert,

If you have a variac you can connect the output of your DVM (set to AC)
directly to the output of the transformer. Make DARN sure the variac is set
to zero before connecting the primary. Carefully turn the variac up to get
an output of 700 VAC or so (Check the manufacturer specified maximum voltage
allowed on the DVM and do not exceed it. Most models are rated at 750V max
AC input). Take your output voltage (ie: 700V) and divide by the input
voltage on the primary (Output of the variac). Take the number you come up
with and multiply it by 120V (or whatever your nominal line voltage is) and
presto! You now have a pretty good estimate of your output at full input
voltage!
Plan on winding many turns for the TC primary because you will not be able
to use much capacitance (probably around .001 uf or so - that's 1.0nf for
you 'nano heads' out there).

Good luck,

Sue
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, February 21, 2001 12:29 AM
Subject: Re: mini coil


> Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net>
>
> Hi Robert,
>
> You can hook any multimeter to the transformer's output to check current.
> However, you only get ONE chance to hook it up right and have the meter
set
> right..., or the meter gets fried :-O  If you aren't feeling lucky, I have
a
> current meter plan at:
>
> http://hot-streamer-dot-com/TeslaCoils/Misc/meter.jpg
>
> The voltage can be done with a string of high value resistors (at only 60
Hz)
> in a divider, but high voltage probes are recommended.
>
> It really does take a little special equipment and knowledge to do it
> officially and safely right the first time, but depending on your
resources,
> you "can" do it with less...
>
> If your really desperate, I know someone you could mail the little guy to
who
> will test it ;-)
>
> Cheers,
>
>         Terry
>
>
> At 06:44 PM 2/20/2001 -0800, you wrote:
> >
> > Hello,
> >  I am going to go miniature for a bit. I want to use my old bug zapper
xfmr
> > to run a coil. Unfortunatly, I have no idea what the voltage or current
on
> > the secondary is.
> >  So, here is my dilema. I need to know if anyone has ever tried
this...or a
> > cheap way of checking the outputs so I can go ahead with this project.
> >  Thanks,
> > Robert Lunsford
>
>
>
>