Re: DC power on Tesla Secondary - Nasty Arcs

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

Original poster: Bert Hickman <bert.hickman-at-aquila-dot-net> 

Hi Dan,

That gentleman was Lou Balint, a very experienced and knowledgeable East 
Coast coiler. Lou connected two Fair Radio 0.1 uF 100 kV caps in series in 
a voltage doubling configuration. These "hot" end of the capacitor chain 
was connected to the base of the secondary so, elevating the base of the 
secondary to a DC potential of 30 or 40 kVDC (I don't remember which). The 
"low" side of the capacitor chain was connected to RF ground. The polarity 
of the coil base could be switched to provide either a positive or negative 
HVDC bias to the secondary. This allowed the secondary to be AC coupled to 
ground through the caps while also permitting a DC bias to be added to the 
RF output. Once a streamer connected to a hard ground, the HV capacitors 
were able to discharge through the ionized path, making for very loud (and 
dangerous) discharges. You certainly wouldn't want that nasty discharge 
hitting either you or your unprotected primary winding.

Best regards,

-- Bert --
-- 
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Tesla list wrote:

>Original poster: jimmy hynes <chunkyboy86-at-yahoo-dot-com>
>That sounds cool!
>Did you see a "before and after" or just after?
>--- Tesla list <tesla-at-pupman-dot-com> wrote:
>  > Original poster: "Mccauley, Daniel H"
>  > <daniel.h.mccauley-at-lmco-dot-com>
>  >
>  >
>  > During the RATCB teslathon, there was an individual
>  > who had a DC source
>  > connected directly to the base of the secondary.
>  > The result was some serious nasty-thick high voltage
>  > arcs coming off his
>  > toroid with the DC applied.
>  >
>  > I was wondering if anyone had more information how
>  > this DC was connected
>  > / buffered / filtered as I didn't get the chance
>  > to speak with the individual at the time.
>  >
>  > Thanks
>  >
>  > The Captain
>  >
>  >
>
>=====
>Jimmy
>
>.