Re: coil running of car battery(s)?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Bob (R.A.) Jones" <a1accounting@xxxxxxxxxxxxx>

Hi Derek,

I was curious about the circuit so I checked it out. I was initially
concerned because it has no snubber across the FET.  So I checked the data
sheet out for the device. I was impressed by its large safe operating area
and 0.5J single pulse avalanche energy capability. Truly a transistor that's
hard to kill. (but not impossible)

Robert

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, January 24, 2005 7:01 AM
Subject: RE: coil running of car battery(s)?


> Original poster: "Derek Woodroffe" <tesla@xxxxxxxxxxxxxxx>
>
>  >Do you wave a drawing of the driver circuit for ickle tess? this is
exactly
> what I was thinking of and I
>  >beleve that it is exactly what is needed.I don't mind using someone
elses
> brain work. I am just glad that my
>  >idea works even though I wasn't the first one to think of it! ;-)
>
> I don't have a circuit diagram for that coil drawn up but basically the
> ignition coil driver(s) are very simple ones like this
> http://www.okay.dyndns.org/okhp/electro/igncoildrv/
>
> The output of each ignition coil is then rectified by a string of 4 x
by8406
> diodes directly into the primary capacitance, then the usual spark gap,
> primary, secondary and topload in a classic TC.
>
> Cheers
> Derek
>
>
>