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Vintage transistor book

A project log for Clockwork germanium

A retro version of Yet Another (Discrete) Clock, with vintage parts

SHAOSSHAOS 04/11/2016 at 23:046 Comments

Just got this book from ebay:

and there (surprise-surprise!) schematics of the trigger on P-N-P germanium transistors that could be used in counters or shift-registers :)

2N123 is similar to Russian МП42Б (MP42B), 1N192 is similar to Russian Д219А (D219A), HD6001 and HD2085 didn't have direct analog in USSR, but I can try to apply the idea to my current T-trigger circuit...

Discussions

Yann Guidon / YGDES wrote 04/13/2016 at 09:15 point

Are you sure you need all those diodes and parts ? A simple divider-by-two flip-flop can use less parts...
 (ok the voice is as old as your book ;-) )

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SHAOS wrote 04/11/2016 at 23:55 point

Found 3rd edition (1958) online:

http://chiclassiccomp.org/docs/content/computing/GE/ECG-315_TransistorManualThirdEdition.pdf

It has more information about transistor logic!

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Yann Guidon / YGDES wrote 04/11/2016 at 23:57 point

awesome !

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Yann Guidon / YGDES wrote 04/11/2016 at 23:42 point

What is the date of this book ? :-)

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SHAOS wrote 04/11/2016 at 23:48 point

Unfortunately I can't find it anywhere 

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SHAOS wrote 04/11/2016 at 23:50 point

On one table inside it's saying
JULY 1
1 9 5 7
:)

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