Re: ign coils in antiparallel , was: Re: RE: Hello, delurk and question

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

Original poster: "Matt Segal by way of Terry Fritz <twftesla-at-qwest-dot-net>" <segal3-at-linkline-dot-com>

If you wired the negative primaries and drove the positives, then they would
be in series, not antiparallel. For antiparallel, connect the + (of one
coil) to - (of the other coil), do this for both terminals. Here is a
picture to show this
http://www.geocities-dot-com/CapeCanaveral/Lab/5322/60kv.gif (you can see them
wired in antiparallel, you can choose to ignore the rest of the circuit if
you want). From this, you should be able to see where the connections go. No
damping coil needed (that I know of). Dimmer in series with a cap in series
with the coils. Works for me. Later.

~Matt Segal
Email - segal3-at-linkline-dot-com
Webpage - http://www.carbonOS-dot-com

---------------------------------------------------------------
I know you believe that you understand what
you think I said, but, I am not sure that you realize
that what you heard is not what I meant.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, June 15, 2001 6:58 AM
Subject: ign coils in antiparallel , was: Re: RE: Hello, delurk and question


> Original poster: "Frank Van der Auwera by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <fvdauwer-at-uia.ua.ac.be>
>
>
> On Wed, 06 Jun 2001 11:03:23 -0600 Tesla list
> <tesla-at-pupman-dot-com> wrote:
>
> > Original poster: "sundog by way of Terry Fritz
> > <twftesla-at-qwest-dot-net>" <sundog-at-timeship-dot-net>
> >
> > Hi All, Frank,
> >
> > Yup!  I've had a good deal of problems with my IGN coils
> > sparking to the terminals with no load on it.
> SNIP
> >
> > Something you can do is grab a similar IGN coil and
> > run them in anti-parallel.  I've gotter a 1kw run out of my
> > coils (120v-at-~8A) for 10-15 sec, but the coils got *very*
> > hot, very fast.  At ~300w output, they ran continiously for
> > ~5 min before the cans grew warm.  The guts will
> > be considerably hotter, but the whole IGN coil lashup was
> > small enough to dump in the 'fridge for a bit to help cool
> > them off.  With 2 coils in anti-parallel, you've basically
> > got a center-tapped tranny, and even without the home-made
> > insulators, mine showed little interest in the terminals
> > of the coils, preferring to arc to the center lugs (the
> > negative terminals), or to the other HV output. I used a
> > 600w dimmer and 2 big AC run capacitors wired in series for
> > ~50-60 uf.  The bigger the runcap, the more current it
> > draws.
> >
> > And be careful, running them in anti-parallel gives
> > you a *really* good difference in potential between the 2.
> > It'll arc a goodly distance to reach you, if you give it
> > the chance :)
> >
> SNIP
>
> antiparallel. hmmm. you mean like this?
>
>
>          -------       ---||---     -    ---------\
>     -----|DIMMER|------|       |---------|         --
>     |    -------       ---||---     + ---| I C     --
>  220 V AC              2x 0.470 uF    |  ---------/
>     |                                 |
>     |                               + |  ---------\
>     |                                 ---|  IC     --
>     |                                 ---|         --
>     |                               - |  ---------/
>     |                                 |
>     -----------------------FUSE--------
>
> Or should i wire together the negative primaries and drive
> the positives? Or doesnt that matter? Should i insert a
> damping coil in the primary driving circuit?
>
> Frank Van der Auwera.
>
> ------------------------------------------------
> mailto:frank.vanderauwera-at-ua.ac.be
> work http://lib.ua.ac.be/u/fvdauwer
> personal http://lib.ua.ac.be/u/fvdauwer/personal
>
> ------------------------------------------------
>
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>