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Re: CP Cap Purchase
>>From JParisse-at-DDLabs-dot-comSat Aug 31 10:34:13 1996
>Date: Fri, 30 Aug 1996 20:15:02 -0700
>From: "Jeff W. Parisse" <JParisse-at-DDLabs-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: CP Cap Purchase
>All,
>I'm ready to purchase CP cap(s) for my coil and I just have a couple of
>questions...
>My choice is between one .05uf 20kv cap or two .1uf 10kv caps (in series on each
>side of the primary). Since I have two transformers in series with the center tap
>grounded, it would seem ideal to use two caps for a balanced primary...
.1
HVAC O---|---| |----) Supply Voltage: 10Kv -at- 300ma
( | )
GND O *SG } Primary
( | )
HVAC O---|---| |----)
.1
>Are there shortcommings to this approach? I'm assuming that the main advantage is
>that 60Hz is filtered from the primary coil... ...Jeff
Jeff,
Yes there are two shortcomings to this approach, it costs more money
to buy two capacitors, and with a single cap circuit in series with
the transformer (gap) and the primary coil there is a circuit in
place that automatically discharges the cap so you will never get a
shock, in case you ever forget. On a two cap system you have to
deliberately discharge each cap with a special shorting wand, every
time.
Let God worry about the small scale symmetry of the universe.
My recommended circuit:
RFC 0.05 mfd -at- 20kV
HVAC 0---l----wwww------l------) (-------l
l l )
l 0 )
* rotary )
safe-T gap gap ) pri.
* 0 )
l l )
l RFC l l
HVAC 0---l----wwww------l----------------l
HVCT 0--------RF gnd.---------------------------base of sec.--0
Good luck, rwstephens