[Amps] 2x 4cx1500b amp

Bill, W6WRT dezrat1242 at yahoo.com
Mon Nov 30 18:25:05 PST 2009


ORIGINAL MESSAGE:

On Mon, 30 Nov 2009 22:28:47 -0200, Felipe Ceglia - PY1NB
<felipeceglia2 at gmail.com> wrote:

>- secondary taps are not a seven-headed beast, but I wont be able to change that 
>on the fly

REPLY:

Just some food for thought on secondary taps:  If you shoot for 3 kVDC output
under load, you will be able to run nearly all the modern legal-limit
American-design tubes. On the other hand, many of the Russian tubes are happier
with somewhat less voltage, on the order of 2.5 kVDC or so. If you build a
single voltage supply at 3 kVDC, you can drop it down with a variac or a bucking
transformer and avoid having taps altogether.

In other words, having taps all over the place might give you a warm fuzzy
feeling, but they aren't really necessary in most cases. 

73, Bill W6WRT


More information about the Amps mailing list