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Re: [TCML] Ignition coil etc
What if one had 6, 6 volt batteries in a golf cart? That's got to be a ton of energy stored in a fully charged set of batteries, and lead/acid batteries can unleash a pretty good bit of amps in a dead short, so...
--- On Thu, 10/1/09, Derek <tesla@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> From: Derek <tesla@xxxxxxxxxxxxxxxxxxxxxxxx>
> Subject: Re: [TCML] Ignition coil etc
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Date: Thursday, October 1, 2009, 6:15 PM
> Brian,
> I have an Ignition coil design, actually
> a twin ignition coil powered from a 12V supply of about 3A.
> Documented at http://www.extremeelectronics.co.uk/coils/it/
>
> As a portable coil its great and (RF
> burns excluded) pretty safe. Regarding the performance I'm
> afraid its not really so good, but at only ~50W of input
> power you can't expect much. Of course with a 24V supply and
> bigger batteries or more ignition coils you could increase
> the input power, but the coil soon becomes heavy and non
> portable, so there is a trade off.
>
> To get the 4-5' streamer lengths I do run
> at 10-20 BPS again this is due to the low power, max volts
> takes some time in charging. The small rotary is required
> here to keep down the corona losses associated with a small
> static gap.
>
>
> For a true portable system with much
> better sparks I have a pair of portable DRSSTC's both
> battery powered, these are documented at Sprite -> http://www.extremeelectronics.co.uk/coils/sprite/ and
> Joan -> http://www.extremeelectronics.co.uk/coils/joan/
>
> Joan is the most efficient and running from 10 x NIMH AA
> cells and will give about 1' of arc to air in 1 second
> bursts.
>
> The only down side to the DRSSTC is its
> complexity compared with the ignition coil solution.
>
> Derek
>
>
> Brian Hall wrote:
> >
> > I have run an ignition coil, and got some nice sparks,
> by hooking it to 4 lantern batteries and a relay - thus its
> completely portable, no need for 120/140v AC wall
> outlet. I built it based on the plans available
> here http://primeline-america.com/science/ ; -
> shame that he advertizes it as a 'tesla coil' when we know
> an ignition coil is oil filled, not truly an 'air-core'
> transformer. But the plans are described nicely along
> with the shopping list, diagrams are easy to follow.
> >
> >
> > Someone has posted plans for an ignition coil driven
> tesla coil http://www.rmcybernetics.com/projects/DIY_Devices/homemade_tesla_coil.htm has
> anyone ever tried this? Any thoughts on its
> efficiency/practicalness for TC
> design? Unhooking from the wall socket is
> the big plus I see here. If run out in a
> field, all the usual grounding in place, then no worries
> about it backfiring into your home wiring in the wall.
> >
> >
> > heck, maybe even rig one up to the top of your car and
> drive around on Halloween Night, portable lightning show!
> >
> >
> > ---------------------------------- Brian Hall
> >
> >
> >
> >> Date: Thu, 1 Oct 2009 12:02:02 -0700
> >> Subject: Re: [TCML] Ignition coil etc
> >> From: henry@xxxxxxxxxxxxxxxx
> >> To: tesla@xxxxxxxxxx
> >>
> >> I don't think that will work too well. You might
> even damage the
> >> ignition coil, and you won't realise its full HV
> potential. Ignition
> >> coils should be driven with something closer to a
> square wave rather
> >> than the sinusoidal output you'll get from your
> transformer. The
> >> sharp falling edge on the driver waveform is
> needed to get the proper
> >> inductive 'kick'.
> >>
> >> Try a dimmer switch circuit: http://wiki.4hv.org/index.php/Ignition_Coil
> >>
> >> Henry
> >>
> >> On Thu, Oct 1, 2009 at 10:58 AM, Rhys Sage <rhys_sage@xxxxxxxxx>
> wrote:
> >>
> >>> I've just got myself a nice new ignition coil
> and a 16v AC 1000ma plugin transformer. Is there anything I
> should put between the coil and the transformer to protect
> either or both when I wire it up and plug it all into the
> wall? Is there liable to be a backlash from the coil when I
> unplug the transformer? Should I put a switch in between
> transformer and coil?
> >>>
> >>> I have no idea how high voltage the coil is.
> It's a new coil for a Mustang. Quite nice and small - made
> in China and no other markings on it. The box says MasterPro
> E70 and the UPC is 84126602575.
> >>>
> >>> I figure it's a lower voltage coil so a higher
> voltage input should be fine.
> >>>
> >>>
> >>>
> >>>
> >>>
> _______________________________________________
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> >>> Tesla@xxxxxxxxxx
> >>> http://www.pupman.com/mailman/listinfo/tesla
> >>>
> >>>
> >>
> >> -- Henry Hallam
> >>
> >> Sent from my Laptop
> >> _______________________________________________
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> >>
> >
>
>
>
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