How about using ring counters? No decoder/drivers needed. A tube ring counter, driving a Nixie directly.
-John ============ > > On 1/9/10 12:09 AM, "Steve Rooke" <[email protected]> wrote: > > 2010/1/9 Tom Clifton <[email protected]>: >> http://transistorclock.com/ has a very interesting (though a bit >> expensive) kit for sale. A 10" x 11" circuit board sporting nearly 200 >> transistors and 600 diodes to drive six seven-segment displays. >> Suitable for framing... As delivered runs on 60hz but there is a note >> about conversion to 50hz mains. You can buy a bare board, just the >> components or a full kit. >> >> You must see it to believe it! > > Bah humbug! Stupid modern day design, it'll never be any good, you > need to use valves to make real gear :-) > > Well, they do make dual triodes which are convenient for making those > Eccles-Jordan circuits. > > I can't help wondering if you go do better than the 4 bit counter:4-10 > decoder:10-7 decoder. Yeah, simple diode matrices in an AOI configuration > are easy, but surely a bit of work (as in digging up archaic designs) > could find a "lower part count" approach. Time to use that Karnaugh map. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
