Original poster: "Gary Peterson" <g.peterson@xxxxxxxxxxxx>
I understand there are charts somewhere on the Tesla Coil Mailing
List site at www.pupman.com that show the capacitive match for
different sizes of HV power supply transformer. Is this true? If so, where?
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, April 05, 2007 7:02 PM
Subject: Re: Smaller than resonance?
Original poster: "Gary Peterson" <g.peterson@xxxxxxxxxxxx>
The published charts in the archives work very well and should be
consulted for the best cap value.
What are the URLs of these lookup charts?
Are you referring to Ed Sonderman's Excel spreadsheet at
http://www.pupman.com/programs/tesla.zip or one of the files
indexed at http://www.pupman.com/howto/index.html ? If the latter,
which of these files should be used to determe the proper size of
the resonance value capacitor (RVC?), not the larger than resonance
cap (LTRC) nor the smaller than resonance cap (STRC), for any given
size high voltage power supply transformer ?
Original poster: "D.C. Cox" <resonance@xxxxxxxxxxxx>
For a given size xmfr you should strive for the largest possible
capacitance such that the energy going into the primary is as high
as possible. If you run smaller than resonance --- yes it will
work but you sacrifice output due to lower "bang" energy per
shot. I usually use 1.5 x the calculated , ie, equal impedance
cap value times 1.5 to determine cap size. The published charts
in the archives work very well and should be consulted for the best cap value.
Dr. Resonance