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Re: [TCML] Ignition coil etc
I have built an ignition coil driven Tesla Coil from plans in a book I have, Gordon McComb's Gadgeteer's Goldmine, with extensive modifications gained from participating with those on this list. Of course, due to the limited power available, the spark length is not exactly spectacular. The basic plans are actually quite good and it works just as described in the book, only with even smaller sparks.
I believe the book is still in print. I can also provide the modified plans I used I think without violating his copyrights, especially since I believe he "borrowed" most of what he used from Walt Noon and his books, although he does credit borrowing some from Walt's induction coil drivers.
----- Original Message -----
From: Brian Hall
Sent: Thursday, October 01, 2009 5:17 PM
Subject: RE: [TCML] Ignition coil etc
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!
> 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
> 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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> Henry Hallam
> Sent from my Laptop
> Tesla mailing list
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