Sensibly equivalent¶ to:
The DET20 was given many different type designations but this was the original Dull Emitting Transmitting 20 valve designed by M-OV.
The DET20 is a low voltage high frequency triode with both anode and control grid taken to top caps. Its design use was as a modulator valve.
The anode sheets are perforated and held together by the perforations.
See also VR135, CV6 and the closely related 7193.
The wide glass tube envelope is 27 mm in diameter, and excluding the IO base pins, is 73 mm tall.
References: Datasheet & 1005.
Absolute Maximum Operating Conditions¶
Updated April 04, 2015. shape:wide.glass.tube construction:pinch type:triode age:1930.1940 base:io heater:6.3v pins:8 pin:1.- pin:2.h pin:3.- pin:4.- pin:5.- pin:6.- pin:7.h pin:8.k pin:tc.a pin:tc.g1