[Prev][Next][Index][Thread]
Re: Got two more
In a message dated 10/1/98 8:49:04 PM Central Daylight Time, tesla-at-pupman-dot-com
writes:
Reinhard
I find it very worth while on all my homemade caps. I use 3 mil poly
sheeting along with plain inkjet/typing paper (approx. 3 mil also). The paper
is laid in a tray with veggie oil, as mineral oil warps the poly. After the
paper is saturated, the cap is built. I prefer flat plate design, poly /
paper / foil.. Many stacks are made, usually 10 and they are all connected in
series to lower the voltage across each individual cap therefor reducing
corona death.
I believe the added paper "cushions" the poly and foil while separating
possible weak areas in the poly. Works for me anyway, I have built many of
this design and they are all still in working condition, some a run in over 10
kW systems! And they are cheap to build above all.
Have fun
Kevin E.
>
> Thanks for the multitude of answers to my last questions. Now, I got two
> more.
> Here they are:
>
> 1.) Building poly caps: Would it be sensible (worthwhile) to add a thin
> layer
> of paper (like Xerox paper only longer and wider) between each layer of
poly
> and the next. The paper would really soak up oil und contribute to good
> insulation. The thickness of the paper shouldn´t reduce the total
> capacitance
> too much. The additional thickness will improve flashover characteristic (
> not
> much, tho).