Custom caps & ballast
copy sent to : tesla-at-grendel.objinc-dot-com
I received a quote from Condenser Products today for a .02mfd capacitor. I
told them what I needed and that I was using a 15kv supply - in a Tesla tank
circuit. The quote is for a .02mfd + or - 10% capacitor rated at 15,000 V
RMS. It does not say pulse application. It does say it will be 3.5" x 14.0"
in a thermoplastic tube. Price $180.00 up front. I think there will be more
charges because they say "will advise you of total amount due" ??? Lead time
6 to 8 weeks.
I calculated my cost to build two more capacitors like I already have,
.018mfd with a Tesla working voltage of probably 9 to 10 kv. As you have
said before, it comes out to be about $90.00 each.
I think the voltage rating he is quoting me is too low. You said your caps
are rated at 45kv pulse - and you operate with 22kv and haven't lost them
yet. Sounds like I should specify 30kv pulse for a rating. This will
probably double the quoted price.
About ballast for a pole transformer, how about using all those shorted neon
sign transformers out there. I have a few. Short the secondaries together
and run the primary in series with the pole transformer? How do I figure out
what I need to limit the pole transformer input current to say 10 amps?