Re: Micro Tesla Coil design

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

Original poster: "Jolyon Vater Cox by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>

You mentioned a 7.5kV ionizer PSU-
do you know how it is constructed ie. is it Cockcroft-Walton ladder-type
voltage multiplier, mains transformer plus rectifier or something else and
is there a schematic for this PSU?Also, how many milliamps would it
deliver -as
I am wondering whether or not a Cockcroft-Walton voltage multiplier supplied
with AC mains voltage (240V in UK) could supply enough current at a few kV
for a micro- or mini-TC.

Jolyon.


Jolyon.>
 >
 > I have made a very small coil.  It was 4.5" diameter x 11" tall (the whole
 > thing!).  The PSU was a 7.5kv air ionizer PSU(maybe 1.25x.75x1").  IT was
 > DC.  I used that to charge an old 10kv .03uf cap to about 5kv.  It took
 > about 6 seconds to do that.  THen it would self fire into a 4 turn primary
 > of 12awg with a 4.5" diamter.  The secondary was 3.5" x 8" tall of 28awg
 > wire.  Sparks were about 4" long.  It was safe enough (it was all enclosed
 > and insulated) for me to pick it up and zap things with it.  It was like
 > touching a strong VDG, the spark that is.  After awhile i got sick of it
 > and took it apart.  Oh well, but it was pretty fun!
 >
 > Steve Ward.
 >
 >
 >
 >