How do you run a IN-12B Nixie tube

[Tom10000]

Hello,
I recently bought a Soviet IN-12B nixie tube and I am wondering how to run it

here is a picture:

[Canis Dirus Leidy]

Do you read Russian? 

OK, more seriously. IN-12B does not fundamentally differ from other Nixie tubes. Indicator's anode is connected to high voltage source through current-limiting resistor, cathodes are connected to decoder with high-voltage capable output (such as K155ID1 aka 74141) or transistor switches:
http://radiokot.ru/lab/controller/28/07.png
http://jacoburge.co.uk/nixie-clock/

P.S. Some numbers from IN-12 datasheet:
Anode voltage (DC): at least 200V, 250V recommended.
"Digit" cathodes working current (DC): 2.5-3.5 mA
"Comma" (digital dot) cathode working current (DC): 0.3-0.5mA

[james_s]

It's pretty easy, you'll need a power supply delivering at least 170V or so, an anode resistor calculated (using Ohms law and the forward voltage of the tube subtracted from the supply voltage) to deliver around 2mA. For the decimal point you need an additional resistor on that cathode to reduce the current further if you use that element.