Nixie Tube Clock ‘Spectrum 18 / 1040’
Issue 7 (15 June 2018)
www.pvelectronics.co.uk
- 12 -
4.4
Low Voltage Generator components.
Fuse
D1, D2, D3 (1N5819)
C1, C2 (220uF)
J1 (12V IN), L1
IC1 (LM2576)
Depending on the fuse you have been supplied with, the leads may
not fit through the holes. If this is the case, simply wet the 2 pads
with solder and pre-cut the fuse leads very short. Solder the fuse
leads onto the top of the two wetted pads.
Bend the legs of IC1 to a 90 degree angle so that the component
lies along the PCB. Solder it so it does not quite touch the PCB. But
is approx 2-3 mm from it. (1/8”)
C1 and C2 are polarized. The light stripe on the body of the
component indicates the negative side. This must match the cross
hatched side on the PCB Marking.
Please note that J1 and L1 must be soldered on the bottom
of the PCB in all cases.