ERRATA
(1) Add a 100nf min 400V min ceramic capacitor across the 183V supply rail for every five of cold cathode indicator tubes
(2) C2 and C8 ripple current 700mA min.
NOTES
(1) The circuit can be simplified if a 200WH min transformer with a 150V RMS secondary can be located.
(2) IN-9 cold cathode display tube salient characteristics:
(2.1) ionizing voltage: 70V
(2.2) striking voltage: 140V
(2.3) maximum current: 12 mA
(3) All capacitor values can be increased provided the type is maintained.
(4) capacitors can be connected in parallel to make up a value but capacitors should not be connected in series.
(5) The 183V supply is isolated from the mains supply.
(6) With 1.2A current drain (100* 12 mA) there will be around 14V peak to peak ripple on the 183V supply line.
(7) for optimum light control, transistors VT1 to Vt100 should be configured as linear current sinks.
(8) The IN-9s will be dissipating around 840mW so they should be in a position where air can flow freely around them.
LINKS
(1) Mains Transformer
https://cpc.farnell.com/multicomp/mcta225-55/transformer-225va-2x-55v/dp/FF01588