RE: stun gun psu

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

Original poster: "Richard Raynault by way of Terry Fritz <twftesla-at-qwest-dot-net>" <raynault-at-home-dot-com>

Marc,

This is the result of the inductor. Low inductance will cause the current
draw. You will find that the resonate point will "jump" into action. The
inductance dictates the current draw. If you wish to reduce the current draw
you must increase the inductance. Ohm's law will guide this action very
easily. Look at the Reactance of the inductor and use ohm's law to predict
the resulting current.

Interesting it is,

Richard

->-----Original Message-----
->From: Tesla list [mailto:tesla-at-pupman-dot-com]
->Sent: October 12, 2001 9:58 PM
->To: tesla-at-pupman-dot-com
->Subject: stun gun psu
->
->
->Original poster: "Metlicka Marc by way of Terry Fritz
-><twftesla-at-qwest-dot-net>" <mystuffs-at-orwell-dot-net>
->
->Hello all,
->I was just playing around last night when i decided to try the stun gun
->my buddies boy gave me to fix for a tc psu.
->The gun uses what looks like an odin coil for the hv pulses, I rang the
->inductance's of the primary and secondary and found the primary to be
->.061mh and the secondary to be 82.6mh. my first thoughts were to try to
->match a capacitor to the primary and try it as a tc in itself, i calced
->out that i needed .0056uf to resonate? the little spark gap in the unit
->could be closed to give about 10 pps and with a 56pf cap i did get a
->stronger spark, but not what i expected?
->so i decided to build a little 1" coil 5.5" tall and see if i could get
->it to spark?
->now the interesting part. I used a 10nf ceramic cap, 10kv and with the
->10 turn x 2" primary i made it should resonate at turn 8 or so. Well
->with everything hooked up i got no output to speak of. I then took the
->top primary lead off and allowed it to arc to the primary windings while
->i moved it up, down and around the coil to find a sweet spot.
->"BOY DID I", at a certain point the arc, instead of the 10 pps, climbed
->to hundreds of pps and it pulled so much current through my dc psu that
->i blew the 5 amp fuse.
->After replacing the fuse i tried again and this time at the spot it rang
->up, but this time it tripped the breaker in my panel, 20 amp?
->i couldn't believe this little thing could draw so much current?
->has anyone messed around with these little things for tc use?
->i'm attaching a couple pics of the quickie setup.
->It was fun, but totally unexpected for me.
->
->http://hot-streamer-dot-com/temp/DCP00932.JPG
->http://hot-streamer-dot-com/temp/DCP00933.JPG
->
->Marc M.
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