Nixie Clock ‘SN18’
www.pvelectronics.co.uk
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4.6
C6 and WWVB / DCF connector
C6 is a high capacity ‘Super Capacitor’, intended to keep the
processor powered in the event of a main power failure. It is vital
that it is placed in the correct orientation. See figure 10 below.
There are arrows on the component that need to be pointing the
same way as the arrows on the PCB.
Also place the 4 way WWVB / DCF connector at this stage.
4.7
IC3 and Socket for IC2
Insert the 18 way IC socket into the PCB at the IC2 location,
ensuring that the notch at one end is aligned with the
corresponding mark on the PCB. Insert IC3 directly into the PCB,
again observing that the notch on the component is aligned with
the notch on the PCB marking. Solder both components in place,
but do NOT insert IC2 at this stage. This will be inserted at the very
end of the assembly. Refer to figure 11
Figure 11
Figure 10: Ensure that C6
is placed with the arrows
on the component
pointing the same
direction as the arrows on
the PCB
