I should have kept that pokie machine I made with three uniselectors, lamp arrays and a whole bunch of relays way back when I was 17, perhaps I could have made a fortune with it now.
Cheers, Steve 2010/1/10 Bob Camp <[email protected]>: > Hi > > Maybe a system using a rotary electrical machine synchronous to the power > line driving a system of gears. and pointers on a dial > > If the transistor clock is worth $200, I should be able to sell something > like that for $400. Throw in the alarm buzzer feature and it could go for > $600... > > Off to Walmart to stock up and make my fortune .... > > Bob > > > On Jan 9, 2010, at 10:30 AM, Lux, Jim (337C) wrote: > >> >> >> >> 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. > -- Steve Rooke - ZL3TUV & G8KVD A man with one clock knows what time it is; A man with two clocks is never quite sure. _______________________________________________ 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.
