Sensibly equivalent¶ to:
The U76 is a half wave rectifier and was designed for television use. It would feed a 40 µF reservoir capacitor through an effective series resistance of 100 Ohms.
Thanks to Stef Niewiadomski for the data-sheet and additional information on the actual heater rating.
The wide glass tube envelope is 27 mm in diameter and excluding the IO base pins and spigot the height is 80 mm.
References: Data-sheet & 1040. Type U76 was first introduced in 1946.
Absolute Maximum Operating Conditions¶
PDF scanned from an original document held by the museum
Updated February 12, 2016. shape:wide.glass.tube construction:pinch type:rectifier.hw age:1940.1950 base:io heater:150ma pins:8 pin:1.ic pin:2.h pin:3.- pin:4.- pin:5.a pin:6.- pin:7.h pin:8.k