Circuit Clock B7971

Circuit Clock B7971

This clock is a truly amazing, it has many features not found in the typical Nixie clock that cannot be found in most clocks of any kind.

The clock is powered by a 16v power supply. There is an on board DC-DC power converter that is used to power the clock and B7971s. This design requires an obsolete MAX771 switch mode power supply.

kit Clock B7971

Time is measured against the local mains reference but these clocks do include an internal RTC to guard against a power failure and the display itself is multiplexed. Since this thing is in a kit, all you need to do is to solder them together so now you can assemble your own clock.