Re: New Lab, Family Coil, 1st Light

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

Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Esondrmn-at-aol-dot-com>

In a message dated 5/15/01 7:50:57 PM Pacific Daylight Time, tesla-at-pupman-dot-com 
writes:

Erik,

The caps are in series, so each cap needs only one half the voltage rating 
required for a single cap.  As Terry pointed out, if one cap shorts, it will 
probably destroy the other one as well.  Two 1.0 ufd caps would yield an 
equivalent capacitance of .50 ufd, which would only be used on a large, high 
powered coil.  Most of the small to moderate sized coils utilize caps in the 
range of .005 ufd to .10 ufd.

Ed Sonderman

<< 
 Waaaaait a min.
 
 both caps need to only be 1/2 the req voltage, but x2 capacitance??
 
 Theoretically, you could run a 6kv 1.0 mu-f cap on each HV line and not be 
 under the req cap voltage rating with a 9kv 30ma nst??
 
 How does that work, exactly...
 
 Thanks
 Erik
 
 
 
 Gary,
 
 I agree.  Richard Quick Is the only coiler that I know of that built an
 equidrive coil system.  I believe he used two .10 ufd caps.  His system
 worked very well, I have video of it running.  Twelve to fourteen foot arcs
 if I remember correctly.  He liked the set up.  I have not seen evidence of
 increased performance with this system over the single cap design.  The
 equidrive caps only need half the voltage rating but need to be twice the
 capacitance.  You also must remember to discharge the caps after every run 
 as
 the transformer secondary windings will not provide that function as it does
 with a single cap.
 
 Ed Sonderman
  >>