Re: Magnifier Primary Capacitors - EQUIDRIVE vs. STANDARD

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

Original poster: "S & J Young" <youngs-at-konnections-dot-net> 

Dan,

Each side of the primary connects to one of the caps.  Let's say they are
each 0.03 mFd.  At 60 Hz, each will have a reactance of Xc = 1 / (2 pi F C)
or about  88K.  At an RMS voltage of 15 KV, the average current through them
from the 60 Hz source will be  about 170 mA.  If the current happens to be
flowing through you, it can still kill you but at least it won't blow you
apart.  There is some "isolation" (88K worth) but as I said before, it is
still potentially lethal.
--Steve Y.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, January 12, 2004 7:28 AM
Subject: Re: Magnifier Primary Capacitors - EQUIDRIVE vs. STANDARD


 > Original poster: dhmccauley-at-spacecatlighting-dot-com
 >
 >
 > Steve,
 >
 > I'm not sure how two caps in this arrangement would provide any isolation
 > from the 60Hz power source.  Could you elaborate?
 > Thanks
 >
 > Dan
 >
 >
 >  > Dan,
 >  >
 >  > Electrically and performance-wise, two caps in series, no matter if
 >  > separated by the TC primary or back to back, act like a single cap with
 >  > twice the voltage rating and half the capacitance of a single cap.  But
 >  > esthetically, it has some appeal for those who value symmetry and
 > scientific
 >  > names to describe their setup.  One could argue two caps might help
 > isolate
 >  > the primary from the 60 Hz power source, but the equidrive setup is
 > probably
 >  > just as potentially lethal to the careless person who contacts a
primary
 >  > while the coil is in operation as is a single cap configuration.
 >  > --Steve Y.
 >  >
 >  > ----- Original Message -----
 >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  > To: <tesla-at-pupman-dot-com>
 >  > Sent: Sunday, January 11, 2004 1:24 PM
 >  > Subject: Magnifier Primary Capacitors - EQUIDRIVE vs. STANDARD
 >  >
 >  >
 >  >  > Original poster: dhmccauley-at-spacecatlighting-dot-com
 >  >  >
 >  >  > Ed, Richard, List,
 >  >  >
 >  >  > I have a question regarding the two most common primary capacitor
 >  >  > arrangments in magnifier systems.
 >  >  >
 >  >  > 1.  STANDARD - Single capacitor as most commonly used in classic
tesla
 >  > coil
 >  >  > systems.
 >  >  >
 >  >  > 2.  EQUIDRIVE - Two capacitors used in the primary circuit.  One on
 > either
 >  >  > side of the primary and connected in series with the primary.
 >  >  >
 >  >  > I'm currently designing my system using the EQUIVDRIVE arrangment on
 > the
 >  >  > basis that the two great magnifier builders, Richard Hull and Ed
 > Wingate,
 >  >  > state this
 >  >  > arrangement is superior over the other arrangement.
 >  >  >
 >  >  > However, I'm not sure and can't see right away what the advantage
is.
 >  >  >
 >  >  > Does anyone have the nitty gritty details of why the EQUIVDRIVE
 >  > arrangement
 >  >  > is superior over the STANDARD arrangement.
 >  >  >
 >  >  > Thanks
 >  >  > Dan
 >  >  >
 >  >  >
 >  >  >
 >  >
 >  >
 >  >
 >  >
 >  >
 >
 >
 >