Judge whether the nixie tube is a common anode or a common cathode

Nixie tube

Judge whether the nixie tube is a common anode or a common cathode
Method ： Insert the digital tube into the bread board , Connect one end of a wire to the positive pole or GND( Suppose the positive pole is connected ), The other end is connected to 5V, Then connect one end of the other wire to any pin of the nixie tube , The other end is grounded . If the corresponding pin is lit , It's a common anode , Otherwise, it may be a common cathode .

If it is not lit, insert the nixie tube into the bread board , Connect one end of a wire to the positive pole or GND( Suppose you take GND), The other end is connected to 5V, Then connect one end of the other wire to any pin of the nixie tube , The other end is grounded . If the corresponding pin is lit , It's a common anode , Otherwise, it may be a common cathode .