The 1910 is a current stabiliser or Barretter. This example was designed to stabilise heater current of 1.4 Amps for voltage variations of 10 Volts between 5 and 15 Volts.
The base is B4 but pin 2 is omitted.
The single stand iron wire is maintained in a hydrogen atmosphere.
The wide glass tube envelope is 32 mm in diameter, and excluding the B4 base pins is 87 mm tall.
Absolute Maximum Operating Conditions¶
Updated April 19, 2019. shape:wide.glass.tube construction:pinch type:barretter age:1950.1960 base:b4 pin:1.- pin:2.- pin:3.f pin:4.f