Sensibly equivalent¶ to:
The Mullard EL83 is a wide band output pentode. It dates from the 1950s and was thus designed in the era of 405 line VHF television. Like all wide band amplifier active devices it has a high mutual conductance figure so that feedback can achieve a wide band design.
Visually only the substantial anode is on display, it was specifically designed for video output.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 68 mm tall.
References: Datasheet & 1040. Type EL83 was first introduced in 1953.
Absolute Maximum Operating Conditions¶
Updated February 19, 2013. shape:thin.glass.tube construction:all.glass type:pentode age:1950.1960 base:b9a heater:6.3v pins:9 pin:1.g2 pin:2.g1 pin:3.k pin:4.h pin:5.h pin:6.g3 pin:7.a pin:8.s pin:9.-