Cossor P1 Bright Emitter Triode

First introduced in 1922 for the opening of the B.B.C.
The unusual cup anode is believed to be a way of avoiding a Marconi patent on cylindrical anodes.

Filament: 4 V • 0.75 A
Va: 30

 

Hauteur • Height • Höhe : 97 mm • 3" 7/8
Diamètre • Diameter • Durchmesser : 29 mm • 1" 1/8

Electrodes arranged as an arch, the anode taking the form of a covering hood.

 

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