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Re: Capacitor Help
Original poster: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>
Hi Bart,
I think it is OK? He is using Digikey 338-1175-nd caps which are the
0.1uF 2000V full foil CD caps. With a 15/30NST and a big primary
coil, his primary peak current is low enough that these film caps
should work fine.
It looks like he has 12 caps in series. That is 0.1uF / 12 =
0.00833uF. That should be fine for a static gap LTR system. The
total voltage is 12 x 2000 = 24000 volts.
So his cap looks fine from here unless I am all confused (very possible!!).
Cheers,
Terry
.........
And I made my capacitor bank or MMC as I believe it's called. I also put 10
Meg 1/2 watt resistors across each cap as suggested.
http://www.v8-ranger.com/temp/tesla/20.jpg
http://www.v8-ranger.com/temp/tesla/21.jpg
The MMC looks like .05uF total if using the 0.15 CD caps. Realize
that the cap bank is set at only 12kV. I hear some build their MMC's
to the transformers Vp, but yours is barely at an rms rating. It may
be wise to up the rating to at least Vp. My MMC is derated to 36kV
which is higher than others have built their MMC's to. I kind of
built it bullet proof, but others have done well just at a Vp
rating. Others may have comments there.
.....
Take care,
Bart