Re: Am I courting disaster?

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

Original poster: Finn Hammer <f-h-at-c.dk> 

Dave,

No, you are not courting a disaster, you are courting a perfect beauty!. 
Thumbs up for the prettiest pig on the block.

Avoiding getting any energy into it is easy: Just make a 3 ball safety gap, 
where the 2 outside balls are connected to the HV terminals, and the center 
electrode is connected to ground.
You can see one on the small pig I made back then:
http://home5.inet.tele.dk/f-hammer/tesla/museum/pig/porkchop.htm
Porkchop! those were the days!

Once properly adjusted, this will stop any overvoltage to occeur across the 
secondary winding,  be it originating from resonant rize due to a missed 
firing on a maladjusted rotary, a primary strike,or whatever.


Cheers, Finn Hammer



Tesla list wrote:
>Original poster: Dave Leddon <dave-at-leddon-dot-com>
>
>I recently re-cased a 10 KVA pig in acrylic to reduce the size and weight 
>of the thing.  See picture:
>http://nick_tesla.home-dot-comcast-dot-net/TheVisiblePig.jpg
>The finished size  ended up 11 x 11 x 14 inches with the volume of oil 
>dropping from 16 gallons to 2 and the weight from 300 to 170 lbs.  In the 
>process I reduced the external connections to the bare minimum, 240 volts 
>in and 14400 volts out and floated everything with respect to 
>ground.  This means that the coil tank circuit also floats which has a 
>certain appeal.  The performance of the coil is the same as it was when 
>one side the supply voltage was tied to the RF ground although the primary 
>tuning does seem to be a bit sharper.  My only concern about this 
>configuration is what happens to the energy following a strike to the 
>primary? It would appear that the only path to ground would be back 
>through the transformer to utility power.  Do I need to install a 
>lightning arrester between one side of the tank circuit to the RF ground?
>