[Amps] inexpensive HV fuse

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Wed, 22 Jul 2009 23:26:46 +0000, Ron Youvan <ka4inm at tampabay.rr.com> wrote:

>   The answer is to use a tuned low pass filter in the power supply, reducing the cap sizes to 
>nearly 1/10th of the brute force sizes.  Like was done in the old time days.  (and full wave rectifiers)
>A small p.s. choke after the final cap might reduce the peak arc current also, I never thought about 
>that before.

REPLY:

The filter caps have two jobs: One is to filter out hum from the rectified DC
and the other is to supply large amounts of energy during peak demand from the
tube)s).  I would be very wary of reducing the cap sizes by 90% without some
very careful testing.

73, Bill W6WRT