Tube-in-a-Tube Nixie Clock
Ronald Dekker made a nixie tube clock which has a few interesting differences from other nixie clocks. It has one digit and it is driven direct from the power lines. There are no transformers, switching power supplies or an of that “extra” stuff to clutter the design. There are also no switches to set the time. The time is set by interupting the power in a sequence. He put the whole thing inside a large test tube to avoid any shocks, thus the name Tube-in-a-Tube (TiT). To finish it off there is an RGB LED to provide backround light. This is a well documented build and worth the read.
There is lots of background information on nixie tubes on the Decode Systems site, if you need it.
