Re: Flat bifilar coils

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

Original poster: "Steve Greenfield by way of Terry Fritz <twftesla-at-qwest-dot-net>" <alienrelics-at-yahoo-dot-com>


--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <Xyme3-at-aol-dot-com>

> Thanks for the information. On the USA Tesla list,
> there was some discussion 
> about stacking bifilar coils to concentrate the
> field. It occurs to me that a 
> stack of coils could replace the primary in a Tesla
> coil.

That could be a way to make a fairly small Tesla coil
with a very low resonant frequency. Insulating disks
between layers?

> One thing i did 
> notice was that the battery i was useing became very
> hot in short order.
> Paul

That would be no surprise, if I recall correctly you
were using a 9V battery. The DC resistance of your
coil has got to be pretty low, and a 9V is going to
run out of energy pretty quickly.

Steve Greenfield