vacuum tube logic gate

[rouslan]

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

Tube info: Audio Amp Project

[Brian Beck]

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.

[rouslan]

-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

[rouslan]

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?

[nickds1]

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