Sensibly equivalent¶ to:
The 6L18 is an amplifier triode. It has a low impedance and was used as a frame timebase amplifier.
The 6L18 was used in the 1948 Murphy television receiver V114 as a local oscillator.
Our other other 6L18 has a different form of construction.
The control grid is wound on copper rods that are bridged above the top mica by a heat-sink fin. The outer screen is perforated and the anode consists of two sheets one either side of the flat central cathode.
The thin glass tube envelope is 20 mm in diameter and, excluding the B8A base pins, is 54]k]mm tall.
References: Data-sheet & 1040. Type 6L18 was first introduced in 1948.
Absolute Maximum Operating Conditions¶
Updated October 06, 2020. shape:thin.glass.tube construction:all.glass type:triode age:1940.1950 base:b8a heater:6.3v pins:8 pin:1.h pin:2.a pin:3.ic pin:4.s pin:5.ic pin:6.g1 pin:7.k pin:8.h