Re: Energy stored in primary again

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

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

Incidentally, as anyone seen the "Vintage USSR Tesla Coil" on Ebay at
http://cgi.ebay-dot-com/ws/eBayISAPI.dll?ViewItem&item=3213415331&category=414
 >From appearance it look as though this is a kicker coil -excited TC.

Jolyon

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, March 11, 2003 4:02 AM
Subject: Re: Energy stored in primary again


 > Original poster: "robert & june heidlebaugh by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>
 >
 > If you select a kicker coil and your capacitors with a 1 0r 2 turn primary
 > to be 60 Hz resonant it works well with no buzzer points.
 >    Robert  H
 > --
 >
 >
 >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  > Date: Mon, 10 Mar 2003 18:03:24 -0700
 >  > To: tesla-at-pupman-dot-com
 >  > Subject: Re: Energy stored in primary again
 >  > Resent-From: tesla-at-pupman-dot-com
 >  > Resent-Date: Mon, 10 Mar 2003 20:10:17 -0700
 >  >
 >  > Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz
 >  > <teslalist-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>
 >  >
 >  > Tesla list wrote:
 >  >>
 >  >> Original poster: "Jolyon Vater Cox by way of Terry Fritz
 >  > <teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
 >  >>
 >  >> On the subject of inductive storage
 >  >> isn't this relevant  both to "buzzer-testing" of TCs
 >  >> and to "kicker-coils"
 >  >> where in both instances the spark gap is replaced by buzzer contacts
 >  >> and the high voltage power transformer by an iron-cored choke?
 >  >
 >  > If I remember correctly the configuration of a kicker coil power
 >  > supply, it consists of a relatively low-voltage supply connected
 >  > to a large coil, that forms an electromagnet that opens a switch
 >  > in series with the circuit. So far exactly as in the primary circuit of
 >  > an induction coil. But in this case, there is a primary capacitor
 >  > of a Tesla coil in parallel with the switch. The system is designed
 >  > so the energy in the kicker coil is transferred to this capacitor,
 >  > and the Tesla coil operates when the switch closes (or almost) again,
 >  > when the current in the kicker coil decreases enough.
 >  > If the current in the gap (that is also the switch of the kicker
 >  > coil) will be interrupted (quenched) at one of the notches of the
 >  > Tesla coil operating cycle, depends on the speed of its closure.
 >  > So, the system is a Tesla coil, not an induction coil. The kicker
 >  > coil is essentially an induction coil without secondary coil, used
 >  > to charge the primary capacitor.
 >  >
 >  >> Has anyone tried using a blocking oscillator or similar to replace the
 >  >> electromechanical switch
 >  >> for a truly electronic kicker-coil?
 >  >
 >  > Possible, but the switch will have to sustain the full primary
 >  > voltage of the Tesla coil, and with two polarities. It's easier
 >  > to replace the kicker coil by an induction coil.
 >  >
 >  >> Also, aren't the above devices examples of "real" Tesla coils rather
than
 >  >> simple
 >  >> induction coils?
 >  >
 >  > Yes. A simplified version of an induction coil powering a Tesla coil.
 >  >
 >  > Antonio Carlos M. de Queiroz
 >  >
 >  >
 >
 >
 >