Single Digit Nixie Tube Clock ‘Z566’
www.pvelectronics.co.uk
- 12 -
4.8 Testing the Switched mode (160V) and regulated (5V)
power supplies
If you have reached this point and followed the correct order, then
all the components for the 160V and 5V power supplies should now
be on the board, and it is recommended that at this point the
power supplies are tested before proceeding. To do so, you will
need to make up the power input cable and socket, and of course
have the 9-12V AC power adapter to hand. Also at this stage you
will need a small flat blade screwdriver and a multimeter.
DANGER: At this point, observe the safety warnings in section 1.3.
When powered up, the board will generate up to 300V DC, and live
parts are exposed. Observe high-voltage precautions.
4.8.1
Making up the power input cable
Take the length (approx 60mm) of two way cable provided and
strip the insulation for about 5 mm from all four ends. Note, the
cable may be a different colour to that shown, and the insulation
may be the same colour for both sides. As this cable carries AC,
the conductors are not polarised. Referring to Figures 11-14, tin
the ends of the cables, and solder to the 2.1mm connector as
shown. Only 2 tags are used on the connector.
Figure 11: Connector and
60mm piece of two way
cable.