Single Digit Nixie Tube Clock ‘Z566’
www.pvelectronics.co.uk
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Do not insert the Nixie tube at this stage.
4.12
Mode, Hr, Min
Push buttons Mode, Hr, Min can be mounted on either the
component or the tube side of the board, depending on your own
particular clock case design. If you are not 100% sure of the final
design at this stage, it is possible to just clip the switches into
place, and they will make a sufficiently good electrical contact to
complete the test and setup of the clock.
4.14 C7
Filter capacitor C7 needs to be installed directly across the 5V and
Gnd supply lines into the PIC processor, IC3. Cut and form the
leads, then solder as shown in figure 16 below. Solder to the
middle two pins on the tube side of the pcb.
5. FINAL TESTING OF PCB
All components should now have been installed. Make a final check
that all components are well soldered in, and that there are no solder
bridges – unintentional solder links between adjacent pins.
Insert IC3, matching up the notch on the resin body with the notch on
the socket and the PCB markings.
Insert the Nixie tube into it’s sockets. Do not insert too hard, or you
may break the glass seal at it’s base.
Re-solder the power input cable, if you removed it for ease of
assembly.
Figure 16: Filter
capacitor C7
