Re: Parametric pumping for tesla coils?

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

Original poster: "robert & june heidlebaugh by way of Terry Fritz <teslalist-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>

Steve and Jim. The idea could work, but problems abound. Most TC's are not
well timed and to make the theory work you would first nead to design a good
method of timing as your pump oscilator would have to be precice and a good
reactance diode to change capacitance at 20Kv is another problem. Try it!
--   Robert  H


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Thu, 15 May 2003 22:12:48 -0600
 > To: tesla-at-pupman-dot-com
 > Subject: Re: Parametric pumping for tesla coils?
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Thu, 15 May 2003 22:16:21 -0600
 >
 > Original poster: "Jim Lux by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 > <jimlux-at-earthlink-dot-net>
 >
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Thursday, May 15, 2003 6:00 PM
 > Subject: Re: Parametric pumping for tesla coils?
 >
 >
 >> Original poster: "Stephen Conner by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <steve-at-scopeboy-dot-com>
 >>
 >> At 15:25 15/05/03 -0600, you wrote:
 >>> With this in mind would it not be entirely possible -at least in theory-
 >>> to use these "parametric" methods in the pumping of Tesla coils?
 >>>
 >>> Could parametric TCs, Q-switching TCs etc, be just be round the corner?
 >>>
 >> Well I guess so, but it's also entirely possible in theory to make black
 >> holes and travel through time ;) How long would it take to make a MMC out
 >> of 100,000 varactor diodes? Or are you thinking of rapidly squeezing and
 >> stretching the primary with some sort of crankshaft arrangement... Come to
 >> think of it, what does "Q switching" mean, the only time I heard that word
 >> was when I asked "What does this part of your laser do" at an optics trade
 > show
 >>
 > Q switching refers to changing the resonant cavity of a laser.  You pump
 > energy into the lasing medium (originally ruby rod), while keeping the
 > resonant cavity (the mirrors) non resonant, over a relatively long time
 > (microseconds) (flash tube duration), then turn on the resonance, the laser
 > oscillates (lases), and dumps the energy all in one big pulse, very quickly
 > (nanoseconds).  The Q-switch itself is some form of shutter (Kerr cell,
 > Pockels cell, Acoustic Optic modulator, mechanical shutter)....    This only
 > works if the "relaxation time" of the excited atoms is quite long (so you
 > can get a whole bunch of them excited, without them falling back to ground
 > state)..
 >
 > Your basic TC does the same thing... slowly add energy to a capacitor, which
 > is not part of a resonant circuit (spark gap is "open"), then make a
 > resonant circuit (close the spark gap) and dump the energy quickly..
 > milliseconds to charge, microseconds to discharge.
 >
 >> Steve C.
 >>
 >>
 >>
 >>
 >
 >