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From: Cursitor Doom <cd@notformail.com>
Newsgroups: sci.electronics.design
Subject: Re: big L
Date: Sat, 21 Dec 2024 23:39:59 +0000
Organization: A noiseless patient Spider
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On Sat, 21 Dec 2024 15:03:06 -0800, dplatt@coop.radagast.org (Dave
Platt) wrote:

>In article <3faemjtve5hvghau2up1stdid1u3bq84gd@4ax.com>,
>Cursitor Doom  <cd@notformail.com> wrote:
>
>>Indeed. And that's just one aspect of it. The designers in the early
>>stage of toob development deserve huge respect for the performance
>>they were able to wring out of a single stage - and all just to save
>>the hard-pressed consumer back in the day a few sheckles.
>
>One trick I've seen mentioned in a couple of books, was to use a
>single tube section as an amplifier for two entirely different stages
>of a radio or TV receiver.  The tube's grid was fed a combination of
>an incoming IF signal, and audio output from the detector; the output
>at the anode was fed to both the detector input, and to the audio
>output (or a second, power-amplifier stage).  Since the frequencies
>were so greatly different it was possible to use not-too-awful filters
>to combine and separate them, and they didn't interfere with one another
>badly enough to keep the system from working.
>
>Quite a different era from today, when they're talking about single
>chips containing a trillion active devices!

*Exactly*
Can we please have 2 minutes silence for the geniuses of yesteryear?