Re: Updated Schematic for new STSG driver

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

Original poster: "Jon Tebbs by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jgtebbs-at-eos-dot-net>

Hi Ralph,

I corrected a discrepancy in the value of R10. It was originally noted
on the schematic as being 1.2 ohms and 2.2 ohms in the Notes. 1.2 ohms
is a little on the low side. In any case, the value is not critical, R10
simply serves as a ballast to limit charging current through the HEI
coil, exactly the same way as in an automotive ignition system. Or a pig
or mot for that matter. For those who might get the idea of using an
inductive ballast...  let's just keep it simple ;-)
-- 
Jon G. Tebbs
<jgtebbs-at-eos-dot-net>



Tesla list wrote:
> 
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Parpp807-at-aol-dot-com>
> 
> In a message dated 12/13/01 7:06:08 PM Central Standard Time,
> tesla-at-pupman-dot-com writes:
> 
> Certainly, I could put this together on piece of perf board.
> I have several 12 V pwr supplies.
> But I don't know what I am doing, and that bugs me. Very frustrating.
> I have lots of questions about the schematic.
> Did you say the 2.2 ohm R 10 is not in your design. I see now why it does not
> have to dissipate 20 W. What is its porpoise?