R3 RECTOBULB

The R3 or RECTOBULB is a half wave rectifier made about 1921 by the National Radio Tube Co. Different constructions all have the same name.

Length = 8 - 8.25" Diameter = 2.87"
Max voltage = 3000
Max current = 250 ma
Fil voltage = 10
Fil current = 1.75         GOTO INDEX