Re: coil setup

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

Original poster: "Richard Modistach" <hambone-at-dodo-dot-com.au> 

i was going to connect the bottom of the
secondary to the strike rail and to the center
of the terry filter and to the center tap\case of
the nst to a ground rod, not planning on
connecting to the primary.
i thought i did my homework,
does this sound right ?

regards
richard
aus


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, May 18, 2004 10:25 AM
Subject: Re: coil setup


 > Original poster: "Antonio Carlos M. de Queiroz" <acmdq-at-uol-dot-com.br>
 >
 > Tesla list wrote:
 >  >
 >  > Original poster: Jimbo07031982-at-aol-dot-com
 >  >
 >  > Would connecting the secondary to the primary cause any adverse
effect's in
 >  > the performance of a coil?
 >
 > You can do this directly if your power supply has one side grounded.
 > One the side of the primary coil must be grounded for this connection.
 > It's possible to connect a center-tapped NST to a grounded primary coil
 > if the primary capacitor is split in two, one in series with each
 > output line of the NST. Just split an MMC capacitor in two, each
 > with twice the total capacitance.
 > Have in mind that this connection is somewhat dangerous, because if
 > the RF ground connection fails the low-frequency high-voltage from
 > the power transformer is present at the output.
 >
 > If the secondary and primary coils are arranged so the primary voltage
 > adds to the secondary voltage, the connection increases the effective
 > coupling coefficient of the system, increasing the efficiency.
 > If the connection is opposite, the effective coupling is decreased.
 > See: http://www.coe.ufrj.br/~acmq/tesla/tefp.html
 >
 > Antonio Carlos M. de Queiroz
 >
 >
 >