Re: broken secondary

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>

On 3 May 2005, at 11:26, Tesla list wrote:

> Original poster: Steve Conner <steve.conner@xxxxxxxxxxx>
>
> At 20:19 02/05/05 -0600, you wrote:
> >Original poster: "Steven Steele" <sbsteele@xxxxxxxxxxxxx>
> >
> >When winding the secondary, what do you do in the event that your
> >secondary breaks?
>
> For an average coil I would just solder the broken ends together
> carefully and keep on winding. If I was trying to get ultimate
> performance (or a really nice looking coil) I would scrap it and start
> again with fresh wire.
>
> I like to use fine gauges of wire- the heaviest I've ever used is
> 0.4mm which is 28awg I think?- so I don't do the thing other posters
> have described where you file the wire ends to make them lap
together
> perfectly.
>
> Two of my coils have crossovers and repairs in the secondary and they
> seem to perform OK but I have never tried pushing them to 3x the
> secondary length. I was once playing with a SSTC when it flashed over
> and burnt completely through the secondary wire. There was about 1/4"
> length of wire missing. Rather than scrap the secondary I just unwound
> a couple of turns, soldered the wire back together and the coil was
> working fine again.
>
>
> Steve Conner

FWIW the V/t in most situations is not stunningly high - certainly
nowhere as high as was once thought by some ;)  I've tested
polyesterimide insulation to 8kV between two adjacent 0.8mm Cu wires
without it breaking down.

Malcolm