Lot for 2 pcs IN-3b-1 
Made in USSR

Due to the fact that the tube is rare and old, it was not possible to find the original instructions for use. 

Of the known parameters, they are used with MLT-0.5 22 kOhm resistors. 

Despite such a low resistance of the resistors, the lamp current at a mains voltage of 220V should be 2.7 mA - the measured average voltage drop across them is 160V

length of the tube (without contactsis 45mm

length of the glowing is 25mm

 diameter is 6mm 

(the length of the bulb may differ slightly from one another)


Combined shipping is accepted

Contact me via message for any question

Shipping time - 10-30 days

Item will be shipped immediately after payment

Thing will be securely packed

Delivery from Ukraine by postal service

Thanks for looking!