[time-nuts] Digital Clock kit - no Integrated circuits!

Bob Camp lists at cq.nu
Sat Jan 9 02:10:34 UTC 2010


Hi

It seems like the diode to resistor ratio is a bit off in that design. 

In order to go into further detail, I would have to admit to starting out in the pre-integrated circuit logic era ....

Bob


On Jan 8, 2010, at 8:07 PM, Tom Clifton wrote:

> 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!
> 
> Tom
> 
> 
> 
> 
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