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VFD Clock Tri-Rail SMPS Milled, Assembled, Working.
VFD clock parts have arrived.
In the interest of saving about 30W of power, a three output switcher supply was chosen for the design instead of a linear regulator setup. Also, the VFD tubes only work with positive grid and anode supplies, so the VFD driver IC will not be able to directly drive the tubes. NPN Darling transistor arrays, P-channel MOSFETs, and a 3 to 8 decoder will be used instead.
The pin sockets soldered directly to the board work perfectly.
Posted by rmrubin 
December 2007