Nixie Tube Clock ‘Frank 3’
Issue 5 (1 Jan 2012)
www.pvelectronics.co.uk
- 12 -
4.4 Testing Stage 1 Power Components.
Identify the test GND, 5V and 170V test points as shown below.
Plug in the power supply, and then test using a DC voltmeter or a
multimeter on DC setting: Touch the black probe on the GND test
point and the red probe on the 5V test point. The voltage should
measure between 5.1 and 5.3 Volts. If not, disconnect power and
check your work. Do not proceed with the assembly until the error
is corrected. Once the test is completed, disconnect the power.
4.4
High Voltage Generator components.
R1, R2, R3, R4, R9, R10,
Q1, D4, C3, VR1, L1, Socket for IC2
Pay attention to mount D4 with the white band aligned with the
PCB marking. Insert the 28 way IC socket into the PCB at the IC2
position, ensuring that the notch at one end is aligned with the
corresponding marking on the PCB.
