Warm Tube Clock
The Warm Tube Clock is the new kid on the block of Nixie Tube clocks. It takes inspiration from, and uses the same voltage driver circuit as the Ice Tube Clock. But this one uses four tubes instead of that hard-to-find single tube. It has a few other tricks up its sleeve. The shield that [...]
original thread: only registered users with at least 25 hack challenge points can see links: click here in order to visit the hack challengeshttp://hackaday.com/2010/11/29/warm-tube-clock/