Re: Does it matter which way i wind my secondary?

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

Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz <twftesla-at-uswest-dot-net>" <acmq-at-compuland-dot-com.br>

Tesla list wrote:
> 
> Original poster: "Drew Murray by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <drewallmighty-at-hotmail-dot-com>
> 
> Does it really matter which way i wind my secondary? Does it have to be
> wound upwards or downwards? Does it have to be wound the same way the
> primary is, or the opposite? Somebody let me know because i want to be sure
> before i wind my new 8" green pvc sewer pipe with my new $40 roll of brand
> new 24 awg soft copper magnet wire. I have built two successful coils while
> in complete disregard to whether the way the wire is wound affects the coils
> performance. I want to get this one right and i have put a lot of money into
> it to see that is is very successful and impressive.
> please let me know.

A Tesla transformer is just this, a transformer (that works as a 
double resonance system when you add the primary and secondary 
capacitances).
The directions of the windings affect the relative polarities between
the primary and secondary only. If you compare two identical coils
working with identical primary circuits and identical secondaries
wound in opposite directions, the only difference that you will
see is that the secondary voltage and current waveforms are inverted
one in relation to the other.
In a typical system powered in AC, the two coils will show exactly
the same performance.
If the system is powered in DC (the primary capacitor is charged always
with the same polarity), I would expect some slight difference in the 
spark output, because it's easier to have breakout with negative 
voltages than with positive voltages.

Antonio Carlos M. de Queiroz