🚀 go-pugleaf

As expected, Larry here put my quiz to shame.

In article <1901@kitty.UUCP> larry@kitty.UUCP (Larry Lippman) writes:
>
>	You forgot the 2N35 (probably the first, most common germanium PNP
>signal transistor) and the 2N255 (a very early and popular germanium PNP
>power transistor in TO-3 package).  

Well, actually I didn't forget them, but one has to draw the line 
somewhere. I still have a box of 2N255s somewhere in storage.
They burnt out easily, as I remember...

>> 13. What is a thyratron? a magic-eye tube? a compactron?
>
>	Don't forget the ignitron, skiatron, and carcinotron (probably
>the most unusual name for a vacuum tube)...

I omitted the ignitron on purpose, since it is not all that archaic
(it's still heavily used, in power work), but I have never
heard of the others! I did warn that it was mostly a solid-state quiz.

>> 24. What is a couplate? a micromodule? the difference between
>> thin-film and thick-film hybrid circuits?
>
>	Don't forget "cordwood stacking"...

Good point, that was a serious omission. What age does to the memory...

One more thing -- some people collect old radios; I collect old op 
amps. I have mint Philbrick K2 series amps going back to the
mid-1950s, with Airpax choppers and 12AX7s. Sometimes I give a talk
on op-amp evolution to EECS undergrads. I use FETs in the tube 
schematics for clarity, of course, but you should see the eyes 
pop at the sight of +- 300V DC power rails.

Max Hauser, UC Berkeley EECS Department

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   Internet (old style): max%eros@berkeley
   Internet (domain style): max@eros.berkeley.edu