Re: DC Spark gap coils, why not current limit on the LV AC side?

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

Original poster: "S&JY" <youngsters-at-konnections-dot-net> 

Eric,

I have solved to my satisfaction the problem of DC power arcing.  I use DC
resonant charging, with the inductor being about 200 mH.  The key is to
charge the tank cap through one set of gaps on a RSG, then use another set
of gaps to discharge the tank cap through the primary coil.  As the rotor
turns, this action repeats.  My RSG has 8 spinning electrodes and two sets
of stationary electrodes.  There is never a spark gap directly across the DC
power supply - resonant inductor - deQing diode, so there is no power
arcing.  Break rates can be as slow as you want.
--Steve Y.


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, July 20, 2004 9:09 PM
Subject: DC Spark gap coils, why not current limit on the LV AC side?


 > Original poster: "Hydrogen18" <hydrogen18-at-bellsouth-dot-net>
 >
 > I'm interested in the idea of DC Tesla coiling, and was wondering, why is
 > it that you cannot simply put a ballast on the LV side of your 60 hz AC
 > step up transformer and use that to prevent your rectifiers from blowing
 > when the spark gap fires? I understand this would not allow for the
 > doubling of the peak voltage of the capacitor like when a charging reactor
 > is used on the HVDC output, but it seems like it would limit the current.
I
 > guess the problem of rotary gap power arcing still exists when a ballast
is
 > placed on the LVAC primary side of the transformer?
 >
 > ---Eric
 >
 >
 >
 >