Connecting a UV lamp with a base G23

You need to buy either a choke to power it. The throttle is suitable for such a "Vossloh Schwabe L7 / 9 / 11.141", it is already sold with a cartridge, which will be convenient. Or any other designed for 9W lamps.

Actually, the connection diagram is similar to a conventional fluorescent tube lamp, the only difference is that the starter and capacitor are already integrated in the G23 base, so these bulbs are connected directly to the inductor.