[Prev][Next][Index][Thread]
Re: Thick vs. thin wire update
> I then replaced the #12 tank wiring (which got
> warm), with # 6 wire
> which doesn't get warm. This made absolutely no
> noticeable
> difference to the spark length or appearance. In
> general, the entire
> primary and secondary stays much cooler than the old
> set up, but
> the sparks are shorter now.
>
> Basically two things have changed; the frequency is
> higher
> (200kHz vs. 85kHz before), and the primary surge
> impedance is
> lower now. I have no easy way to determine which
> factor is having
> the most negative effect on the spark length, but in
> any case the
> thick wire is reducing my spark length to a
> noticeable degree. There
> is nothing wrong with thick wire per se, except that
> it reduces the
> inductance for a given coil size. A larger TC of
> course requires thicker
> wire, and this does not cause a problem.
>
> The gaps seem to be brighter now, so it is quite
> possible that the
> lower surge impedance is increasing my gap losses.
> This may be
> causing the problem
Hi John,
It is very quite possible since decreasing sgrt(Lp/Cp)
will cause lowering Qp too.Thin secondary wire got
very little to do with considerable losses in sparking
systems.
Regards,
Boris
=====
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo-dot-com