Nixie Tube Clock ‘Dink’
Issue 9 (10 November 2017)
www.pvelectronics.co.uk
- 14 -
4.5 D6 - D8 (1N4148)
C6 (0.22F)
C7 (100nF)
C6 is a high capacity ‘Super Capacitor’, intended to keep the
processor powered for short periods in the event of a main power
failure. It is vital that it is placed in the correct orientation. See
below. There are arrows on the component that need to be
pointing the same way as the arrows on the PCB.
4.6 C4 and C5 (33pF)
X1 (32.768 Khz Crystal)
These are the timekeeping components: 32.768KHz crystal and
two load capacitors.