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Old 11th September 2006, 02:53 PM   #1
rouslan is offline rouslan  United States
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Default vacuum tube logic gate

Hi, can anyone tell me how to make a simple logic gate (OR\AND) from a 6F1P vacuum tube?

Tube info: Audio Amp Project
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Old 11th September 2006, 05:58 PM   #2
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Vacuum tube NOR and NAND gate schematics

But I have to ask, why use tubes for logic today? This is one area where the advantages of solid state win hands-down.

Edit: The NOR and NAND are more versatile than the OR and AND. You can make any logic circuit from simple negative gates as building blocks.
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Old 11th September 2006, 08:42 PM   #3
rouslan is offline rouslan  United States
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-Will this schematic work for an AND gate using a 6F1P tube?
ftp://nrouslan.dyndns.org/vaccuumGateProj.jpg

~Tube info: http://russiantubes.com/prop.php?t=12&p=353
~Tube charact.:
http://www.diyaudio.com/forums/attac...amp=1155712762
http://www.diyaudio.com/forums/attac...amp=1155712792
http://www.diyaudio.com/forums/attac...amp=1155712820

-How should I change it?

-Would 5VDC logic voltage work?

-Do I need to isolate the output or just connect it to a resistor+led?

To answer your question, I was doing it for a project demonstrating how transistor and tube logic gates worked for a class project.

Thanks in advance.

-Rouslan
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Old 11th September 2006, 09:14 PM   #4
rouslan is offline rouslan  United States
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another thing, if I made something like this
http://www.quadibloc.com/comp/images/vtl.gif

What aproximate values should I use and is V1\V3 (in the picture) the amount of voltage?
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Old 12th September 2006, 11:03 AM   #5
nickds1 is offline nickds1  England
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There is a great deal of discussion of this sort of stuff on the neonixie-l Yahoo!!!!! group. We like to build clocks with nixies & preferably vacuum-based logic - thyratrons are popular, but there are some there that have built scary scary stuff:

Wonderful tube clock

This is in German, but Google & Yahoo language tools both do a fair (and amusing) job of translation.

Lots to be learnt from there...

HTH
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