Nixie Clock IN-17 Assembly Instructions And User's Manual page 31

DB1, DB2 Neon Bulb
R16, R17 680kΩ
R15 10kΩ
Q4 MPSA42
11.1. Resistors R15, R16 and R17 leads bend in accordance with item 3.1. Insert them into locations
R15, R16, R17 and solder their leads as pointed on the picture
11.2. Install the transistor Q4 legs into the board holes marked as Q4 that its case flat edge is above
the flat edge of the placement marking. Solder it each leg in accordance with sub-item 10.2directions.
NOTE: Neon bulbs DB1 and DB2 you must install later after nixie tubes soldering.
11. Neon dot circuit components
.
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