>Amidst all the nostalgia over AM (my Dad, W5JHJ, still has a working Globe
>Champion with 275 W of plate-modulated AM; I vividly remember watching the
>866A mercury-vapor rectifiers glow blue and pulsate as he spoke), I've been
>wondering what the *physical* mechanism is that heats a vacuum tube anode
>as it operates.
Tube-type amplifiers dissipate roughly half as much heat as the amount of
RF they produce.
> I'd appreciate enlightenment. We all take for granted the
>fact that these things get hot as they operate, and I nod my head properly
>when discussing efficiency and plate dissipation, but what, physically, is
>heating the anode?
>
Electrons impacting the anode.
cheers, Kim
>
> Kim Elmore, Ph.D.
> University of Oklahoma
> Cooperative Institute for Mesoscale Meteorological Studies
>"All of weather is divided into three parts: Yes, No, and Maybe. The
>greatest of these is Maybe" The original Latin appears to be garbled.
>
>_______________________________________________
>Amps mailing list
>Amps@contesting.com
>http://lists.contesting.com/mailman/listinfo/amps
>
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
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