R: [AMPS] tube plate resistance

[Maurizio Panicara]

Then, the overall efficiency of your class A amplifier is close to that of a
standard class C amplifier.

73,
Mauri I4JMY


-----Messaggio Originale-----
Da: John T. M. Lyles <jtml@lanl.gov>
A: <amps@contesting.com>
Data invio: marted́ 5 ottobre 1999 23.25
Oggetto: [AMPS] tube plate resistance


>
>
> At 11:46 PM -0400 10/1/99, Amps Digest wrote:
> >Date: Fri, 1 Oct 1999 16:26:07 +0200
> >From: "Maurizio Panicara" <i4jmy@iol.it>
> >Subject: R: [AMPS] Conjugate matching and amplifiers
> >
> >I don't really agree with this statement at high power levels.
> >
> >An high level amplifier is not designed ONLY at a stated output power,
but
> >it's designed to be at the highest gain possible and for the best
possible
> >efficiency at such output.  (Imagine a 2 MW Amp that wouldn't be designed
> >under this concept....)
> >
>
> Sometimes the 2MW amplifier is designed for high linearity or
> stability, and then efficiency and gain go down the drain. Our class
> A 100 kw amplifier is about 20% efficient, but only operates at 5%
> duty factor, so the average dissipated plate power is "reasonable"
> (less than 30 kW).
>
> John
> K5PRO




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