Another tube that is showing up surplus is the 3CW20000A7. Yes, 20KW Pd
water cooled and with a 700W filament that needs a little air flow.
But talk about a silent amp, even run it Class A and its loafing. At ham
levels water flow is minimal.
Carl
KM1H
----- Original Message -----
From: "Dave White" <mausoptik@btinternet.com>
To: "Alex Eban" <alexeban@gmail.com>; "'Herzog'" <herzog@frontiernet.net>
Cc: <amps@contesting.com>
Sent: Monday, March 29, 2010 7:09 AM
Subject: Re: [Amps] me not an idiot
> The less you cane a piece of equipment the less the stress on components
> run well within their specification limits. Simple as that. Sure, I
> can't see the point in building a 4CX10,000D amp to run 400w but a 5kw amp
> to run a k and a half seems ok to me. You pays your money and you takes
> your choice
> Cheers
> D
>
>
> -----Original Message-----
> From: "Alex Eban" <alexeban@gmail.com>
> To: "'Dave White'" <mausoptik@btinternet.com>; "'Herzog'"
> <herzog@frontiernet.net>
> Cc: amps@contesting.com
> Sent: 29/03/2010 09:52
> Subject: RE: [Amps] me not an idiot
>
> In a car, and any mechanical construction it's a must. You need that extra
> power to make you escape in an emergency. Just like "war power setting" in
> a
> war plane.
> But please explain tome what do you need it for in a desktop amplifier?
> Who
> are you running from/ on whose head is it going to fall?
> Extrapolations from field to field aren't always translating one to one!
> If you keep this way, you may finish with a Thales 500kW tube at 35kV to
> run
> a one kilowatt , with no intermods products. At 150kiobucks just for the
> tube, does that sound as a good proposition?
> Design a reasonable amplifier at let's say 2kW input and concentrate on
> circuit refinements instead.
> This is what I call good engineering in hobby type circuits!
> Alex 4Z5KS
>
> [truncated by sender]
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