[neonixie-l] Re: Taylor Edge Nixie Clock Kit

['threeneurons' via neonixie-l]

I'm a little late to the party, and the discussion between old 74xx versus 
74LSxx caught my attention. In most cases, I'd favor the newer 74LS over 
the original 74xx. But the resistor values (360 ohm) paint you into using 
the older series, because 5V / 360ohms gives you 13.9mA. The value seems to 
have been chosen because of the set switch resistor values.Of course as the 
OP mentioned, removing all the 360 ohm resistors lets the unit operate 
properly. The set switches may work adequately, too.

<https://lh3.googleusercontent.com/-k_4j6X4xaEs/WN3AZVxQbgI/AAAAAAAAYlU/Wcu3xmkZidsfPKYgHCTU5VlWEi_nSXiWACLcB/s1600/Taylor_Clock.jpg>

Personally, I prefer 4000 series CMOS, for this kind of thing.


Good to see that the OP, and his buddy, figured it out.

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