[Hallicrafters] another gimmick

[Carl]

Ive used PC board material and Mylar to build HV caps for filters that 
hold up fine at 1500W and a moderately high VSWR.

Carl
KM1H


----- Original Message ----- 
From: "Paul Kraemer" <elespe at lisco.com>
To: "Hallicrafters list" <hallicrafters at mailman.qth.net>
Sent: Friday, February 06, 2009 1:22 PM
Subject: [Hallicrafters] another gimmick


> My favorite solution for a gimmick capacitor or any low value high 
> quality
> capacitor is a small scrap of double sided circuit board.
> If you measure a larger sample on a capacitor meter you will have a
> representative value of pf / square inch so it is easy to determine 
> how
> large the capacitor needs to be.
> Solder a lead to each side of the board and you have a high quality
> capacitor
> If it needs to be trimmed to value after installation just put the 
> leads
> radial fashion on one end and snip to trim
> If it needs protected sleeve it with heat shrink or goop it into a 
> small
> plastic tube.
> I don't know what the breakdown voltage would be offhand but it is
> significant especially with glass epoxy board
> Paul K0UYA
>
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