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Re: Ceramin Caps
Chris,
If you have all the time in the world to solder ceramic caps, why not
take some time to roll poly instead? MMC's are still in the experimental
stage and getting great results ( thanks Gary and Reinhard!!), but
they're still testing. Don't use ceramic, their RF losses are too great.
Metallized foil is the only kind to get.
Concerning time: I kept blowing my glass caps, decided to roll poly. I
bought a roll of poly from home depot (10X25 .006 mil) for $3.50
(perfect amount for 3 caps of .033 each). I spent one evening cutting
all the poly strips, cleaning and stacking them. Next night I stacked
with foil and rolled them. It took 2 more days to prepare the 3" PVC
pipes and install the caps with terminals, and an evening to fill with
oil. I've not had one bit of trouble with my 15K/60 NST.
If you want a robust poly cap for experimenting, Build enough in series
to handle the voltage. That's my opinion.
Bob Volk
> I've been reading the list for about 6 months and decided on finally
> building my first coil.
> I've been rat-holing pices and parts for a while and have gotten a
> couple FITS (Furnace Ignition Transformers) at 10KVAC 30mA (I have 4)
> and a MOT (I think 2KVAC -at-500mA).
> I'm also looking for a pole pig and any other parts.
> The main thing keeping me from actually starting has been the Caps.
> I don't want to spend a fortune on buying one only to destroy it in a
> matter of hours, and I don't want to invest a week or two in rolling
> my own only to detonate it in a couple minutes.
> I have found a source for Ceramic Disk Caps rated .001UF -at- 10KV
> (Matsushita # ECK-D4A102MDA) and can get 100 for $80.
>
> Here's the rub....
> How many do I need?
> How do I assemble them?
> How many, of what kind, of Transformer do I wire up and how?
>
> I want something that will take serious abuse while I learn the
> basics. I don't mind way overenginneering the individual components
> even if it will cost more to do it.
> I have all the time in the world to sit and solder little cap leads
> as long as I know it will work and last for quite a while.