> Here's a little nixie project. Its a thermometer, it has a 2-1/2 digit 
> display, with a simple NE-2 in the 1xx position. I decide to build a decrete 
> dual slope ADC circuit, to convert the temp voltage from a LM34 to a digital 
> readout. Since a dual slope converter has a rising and falling ramp (with a 
> steady DC input), it just begged to have a IN-13 bargraph following that 
> signal.

Oh, that's just neat to watch.  I'm also building slope generators, but they're 
for vector generators for some CRT art projects.

- John


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