Re: Tiny TCs

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

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-uswest-dot-net>" <jimlux-at-earthlink-dot-net>

All of the ones I have dismantled (about 20 or so..) have been pretty much
the same.  There are 4 basic topologies:

1) DIAC as threshold element in series with gate
2) neon bulb in series with gate (only older ones from the '70s)
3) QUADRAC as switch element (essentially a diac and triac in one TO-220
package)

4) series choke or not...
5) Small trim pot in parallel (for fan speed controllers, to set "minimum
speed" to something that will actually start the fan moving)

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, April 08, 2001 7:24 PM
Subject: Re: Tiny TCs


> Original poster: "Jake Draper by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<cybermecium2-at-home-dot-com>
>
> I know this is a little OT, but I've blown way too many 555 chips in
faulty
> ignition coil driver circuits and am going to build the dimmer switch
> version. I have a question, are ALL dimmers the same (with the Triac/Diac)
> or is there a specific type to look for?
>
>
> > ----- Original Message -----
> > From: "Tesla list" <tesla-at-pupman-dot-com>
> > To: <tesla-at-pupman-dot-com>
> > Sent: Sunday, April 08, 2001 10:58 AM
> > Subject: Re: Tiny TCs
> >
> >
> > > Original poster: "Liviu Vasiliu by way of Terry Fritz
> > <twftesla-at-uswest-dot-net>" <teslina-at-yahoo-dot-com>
> > >
> > >
> > > --- Tesla list <tesla-at-pupman-dot-com> wrote:
> > > > Original poster: "Steve & Jackie Young by way of
> > > > Terry Fritz <twftesla-at-uswest-dot-net>"
> > > > <youngs-at-konnections-dot-com>
> > > >
> > > > List,
> > > >
> > > > For experimenting with triggered spark gaps and
> > > > other such research, at
> > >
> > > The experimentation with tiny TC is very usefull. I
> > > built my secondaries on 1.25" and 1.6" diameter PVC
> > > forms. I alimented me coils from ignition coils drived
> > > with dimmers from mains. Work frequency around 1.2-
> > > 1.4 Mhz range. Max spark lenght = 4-4.8 inches. You
> > > can let the sparks go to a metal rod held in your hand
> > > without a sensation of electrocution. They can ve
> > > mountated quickly, on a table and are great for
> > > demonstrations.
> > >  If you want , look at:
> > >  http://www.geocities-dot-com/vasil_ro
> > >  - mini tesla coil
> > >  - new pics of my tesla coil (upgrading the PSU)
> > >  - my new 1.6" tesla coil
> > >
> > >  teslina
> > >
> > > __________________________________________________
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> >
> >
> >
>
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