RE: Classroom Projects with a TC?

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

Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com> 

While the NST will effectively short the end terminals of an MMC, there
will in fact be hazardous potentials left on individual MMC caps.
Algebraically, they will add up to zero.  But touching the terminals of
an individual cap may knock your socks off.  This is why the use of
bleeder resistors across each cap, rather than across the entire string,
is advocated.  Just why the charge across individual caps is unequal is
unclear.

Gary Lau
MA, USA

Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net>

Since the primary capacitors are usually in paralel with the NST, they
wont
hold a charge after power is off.

Regards - Jim Mitchell
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, January 10, 2004 9:39 PM
Subject: Re: Classroom Projects with a TC?


  > Original poster: BunnyKiller <bunikllr-at-bellsouth-dot-net>
  >
  >
  >
  > Tesla list wrote:
  >
  > >Original poster: L8NOMOR-at-aol-dot-com
  > >Greetings All
  > >
  > >My son has an 8th grade science project coming up, and we have
borrowed a
  > >TC (6kv, 60ma nst).  We are subscribed to the E-mail list and have
been
  > >reading numerous writings about TC's.  All you coilers out there
provide
a
  > >lot of very useful information. That is why we have come to you
professionals.
  > >
  > >He is wondering if there are any great projects he can do with the
coil,
  > >other than just making streamers.  We have heard of coils being used
to
  > >light a fluorescent bulb, but don't know how to go about doing it
  > >safely.  Any other help with projects would be greatly appreciated.
He
is
  > >wanting to WOW his classmates.
  > >
  > >And a technical safety question.  Do we need to make sure that the
  > >capacitor circuit is completely discharged prior to touching the
unit? If
  > >so, how do we accomplish this?  The cap circuit is made from 15
panasonic
  > >ac pulse capacitors.
  > >
  > >Thanks in advance for all your professional help and advice.
  > >Andrew and Garry
  >
  > Hi Andrew and Gary...
  >
  > first off...  its not the classmates that need to be "WOWED" ,   it's
the
  > judges/teachers that need to be impressed.  If he wants to "Wow" the
  > classmates, just invite them over for a show with the coil.
  >
  > The flourescent tube trick is an ok subject, but the reality of it
deals
  > with radio frequency hi voltage output that influences the gas in the
  > tube...  is he willing to dig that deep to know "WHY" it does it?...
  > and report on it?
  >
  > There is always the subject of Resonate Rise of voltages  ( which is
a
  > prime example of tesla Coiling) and how the voltages come to such hi
levels
  > due to the resonate rise...
  >
  > you can probably do the "How well does it Really insulate" project by
  > testing several different materials for insulative properties ( glass
  > sheet, plastic sheet, Mica sheet)   place a wire on the toroid
leading to
  > the sample and a ground plate below the sample... see which insulator
gets
  > "punched thru" ( use different thicknesses) and explain why it failed
or
  > why it didnt....
  >
  > somewhat more simple ( but realy doesnt need the use of a coil) is
the
  > ionization of gasses at atmospherical pressures....  why the color is
what
  > it is ( why is Lightning a blue/white color)  ...  electrons being
forced
  > to higher levels and jumping back down to ground states releasing
photons
  > at that specific wavelength and energy...  see laser applications...
(
  > check out Sams Laser FAQ's)
  >
  > or how hi voltage electricity can produce ozone ( O3)  and other
normally
  > non existing gasses  ( NO2 - NO3  etc)
  >
  > or if you are into real science....    show that the "skin effect"
doesnt
  > work with hi voltage hi frequency electricity by frying several
gerbels
and
  > doing the autopsy and showing that the internal burns are prevalent
thru
  > the blood system and nervous system...  ;)   this will require a
microscope
  > ...  ;)
  >
  > Finally...   dont touch a coil when its running, dont contact the
  > streamers, and dont touch the primary system untill you have
discharged
the
  > Cap... ( see the last project listed) ...
  >
  > Scot D
  >
  >
  >
  >
  >
  >