Brief technical description for indicator lamp TLZ-3-1 B15s/18

Glow discharge indicator TLG-3-2 of blue glow with a pin base and an ignition voltage of not more than 127 V.
Designed for indication of voltage in DC and AC circuits in radio equipment of wide application.
Produced in a glass bottle with B15s/18 base.
Works in any position.
Overall dimensions of the glow discharge indicator TLG-3-1:
— indicator length no more than 41.5 mm;
- the diameter of the flask is not more than 15.6 mm.
The weight of the lamp is not more than 10 g.
B15s/18 - indicator base type.

Lamps can be used in DC and AC circuits, while they must be connected in series with the ballast resistance, while the operating current is not more than 1.3 mA (0.0013A).
For alternating current, the ballast resistance is:
For TL 1-1 and TL 1-2 127v - 33 kOm, 220v - 100 kOm
For TL 3-1 and TL 3-2 127v - 20 kOm (only 3-1), 220v - 47 kOm, 380v - 100 kOm