Nixie Tube Clock ‘Halo Chroma’
Issue 1 (1 April 2021)
www.pvelectronics.co.uk
- 9 -
The resistors used in the kit are 1% tolerance metal film. They are
marked with 4 coloured bands to identify the value. However it is
sometimes unclear in which direction the bands should be read.
Therefore, we recommend that the resistors be identified with a
multimeter.
Please note the fuse will look like the picture below. It can easily be
confused for a capacitor. It is a self-resetting fuse.
The 15pF and 33pF capacitors will be marked 15 and 33
respectively. The 100nF capacitors will be marked 104.
Q1 (IRFD220) is in a very similar package to Q2 – Q4 (EL817). You
can tell the difference, in addition to the part marking by looking at
the pins. Q1 has two pins that are actually joined at the resin body.
Q2 – Q4 have 4 separate pins.
Inductors L1 and L2 may be one of three types:
