Lynn, 5KV @ 600mA is 3KW input. If you're only getting 500W out, I would
suspect something amiss in the tank circuit. I'd expect 1500W to 1800W out
with 3000W in.
Just had a thought.... You say 20W drive, which seems low for that
monster tube, but.... I wonder if you are driving it with an ICOM? Some
of the ICOMs are (in)famous for a full power spike even when cranked down to
QRP levels. I don't know which ICOMs - someone could jump in with that.
Bill
~~~~~~~~~~~~~~~~
Bill Coleman N2BC
http://home.stny.rr.com/n2bc
----- Original Message -----
From: "Lynn" <no9z@soltec.net>
To: "Merv Schweigert" <kh6jj@mobettah.net>; <amps@contesting.com>
Sent: Thursday, April 10, 2003 4:08 PM
Subject: [Amps] Re:
> The problem with the power supply occurs with a power output of
> around 500 watts.... i.e. less than 600 ma total current ( its a big tube
> with about 20 watts drive) 3cpx5000.
>
> I am using a full wave rectifier with a center tapped secondary. 50 uf
> of
> capacitance. The power supply can provide the current and voltage if it
> is turned up slowly. The issue here is the instant current draw from
> the cw signal.
>
>
> thanks
> Lynn NO9Z
>
>
>
> Merv Schweigert wrote:
>
> > >
> > > I have almost completed a nice 5000 v 2amp supply using a large
> > > Wilcox transformer with a capacitive filter. 50uf at 7kv.
> >
> > How much current are you drawing under load ?? 5000 v at 2 amps
> > (if your drawing that much) is 10KW and a 25 amp breaker is way
> > to small. If your drawing 1 amp its still too small a breaker..
> > Merv
>
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