Re: Ignition coil : mini tesla coil?

to: Jeff

Forget the 2N3055 --- use an SCR --- much more durable for this application.



-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Wednesday, July 14, 1999 11:04 PM
Subject: Ignition coil : mini tesla coil?

>Original Poster: "Jeff Corr" <corr-at-enid-dot-com>
>Only slightly understanding the construction of an ignition coil, could
>(or does) it represent a mini tesla coil.  I have been working on one and
>I don't know if this is or is not grounds for discussion on this list.  My
>grounds for it is are being that it is like a solid state circuit, and I
>possibly be driving a tesla tank circuit with one of these.
>I've used a single 555 timer to turn on and off a 3055 on a VERY large
>heatsink (500-1000 watts estimated.)  Even at full power and current,
>the 3055 was only moderately warm, perhaps 90 degrees.  (For the
>computer knowing people, it was the same temperature as my CPU
>heatsink to the touch.)
>I'm wanting to use to ignition coils, wired in anti-parrallel to produce
>the high voltage to drive a tesla coil tank circuit.  So far I have not
>two coils at once, but I'm sure the 3055 could handle this.  Each icoil
>was producing 1.5-2 inch sparks on its own, being driven by 17 volts.
>Very good results, however, there was bright obvious corona between the
>center HV lead, and the supply voltages on each side.
>Any thoughts as always?