[Amps] 2 x 8877 amp

[Michael Tope]

If you could get the efficiency up to 70%, then you might
be able to squeeze out 10000W peaks if you had a 14 KW
ICS power supply (3300 Volts x 4.3 amps peak). With
a two-tone signal x 70% efficiency, the Pd would only
be 2140 watts average (4280 W peak).  Dunno about
tube dynamics, however. Does an 8877 cathode emit
enough electrons to support 2 to 3 amp anode current
peaks and can it handle that much instantaneous
dissipation? Five KW CW output certainly doesn't seem
too outrageous if the power supply is good.

As far as running this thing off of 115 VAC, I'd really
like to see that (125 amps peak?)!


73 de Mike, W4EF......................................

----- Original Message -----
From: "Terry Gaiser" <w6ru@bak.rr.com>
To: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; <amps@contesting.com>
Sent: Wednesday, November 06, 2002 11:22 AM
Subject: Re: [Amps] 2 x 8877 amp


> "Output power 10,000 PEP" ... What a joke ... must be a pulse amplifier
<g>.
> Terry W6RU
>
> ----- Original Message -----
> From: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
> To: <amps@contesting.com>
> Sent: Wednesday, November 06, 2002 11:09 AM
> Subject: [Amps] 2 x 8877 amp
>
>
> > In case you're short of something new to look at:
> >
> > http://www.arrakis.es/~ulvinsl/eng/index.htm
> >
> > Note the specs say 2 x 8877s & it can supposedly run off of 115 v. ac?
At
> > what, 60 amps?  Not around here!
> >
> > Rob Atkinson
> > K5UJ
> > k5uj@hotmail.com
> >
> >
> >
> >
> >
> > _________________________________________________________________
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