[Lowfer] Question

[lowfer@mailman.qth.net]

> True, nothing exotic, but watch the current rating on the cap-you 
> may need a
> series-parallel arrangement to keep the current per cap down to an
> acceptable figure --  eg. 4700pF 500 volt polystyrenes (despite an 
> excellent
> measured Q value) typically fail at any more than about 1.5 amps
> continuous.(at 180 kHz)  A practical continuous rating for them 
> appears to
> be 1 amp.
> Other cap values and types of dielectric will no doubt have a range 
> of
> ratings but the continuous current rating for the required frequency 
> has to
> be determined experimentally for most types.
> 
> 73
>  Dave, ZL3FJ


Some good ideas bouncing around

Keep in mind the old hockey puck caps that consist of a ceramic 
body finished off with  cast aluminium end caps. These can be had at
hamfests
for a couple of bucks and are rated for service like this

I have been buying them when I see them. still around but you have to
hunt them down
just dont buy them all    HAR

Bob  K3DJC