Nixie Tube Clock ‘Frank 2 IN-16’
www.pvelectronics.co.uk
- 11 -
4.7
Variable Resistor VR1
VR1 is used to tune the switched mode power supply to give the
optimum voltage to drive the Nixie tubes (170-180V).
4.8
Inductor L1
Place L1 in position, and ensure it is as close to the board as
possible. The leads of the component may not match exactly the
spacing on the board – this is perfectly normal. You can slightly
form the leads so it is a nice firm and snug fit to the board. Solder
and trim the leads as short as possible.
Figure 10
Figure 9 showing VR1
