Nixie UNIVERSAL TUBE CLOCK KIT Assembly Instructions And User's Manual page 18

3. High voltage generator components preparation for insertion into the board and
soldering order
U2 MC34063
Q1 BC557
Q2 IRF840
D3 UF4004
D2 1N914
L1 Inductor 330uH
C5 2.2uF, 250V
C2, C4 0.1uF
C3 2.2nF
R4 0.5Ω 0.5W
R1 1k
R3 3.3k
R2 470k
R21 1k (Potentiometer)
3.1. All resistors (except R4) leads bend in accordance with this picture
that each resistor place on board surface will be minimal.
3.2. Repeat actions pointed in items 2.3, 2.3.1 and 2.3.3 for proper components insertion into the PCB
and soldering.
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