Antique radios, Old Time Radios
ET1
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Country:
Great Britain (UK)
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| Identical to |
ET1
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
Top contact screw type.
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| Was used by |
Technology / Measurement |
| Filament |
Vf 1 Volts / If 0.1 Ampere / Direct / Battery = |
| Description |
Electrometer triode for high impedance measurements. The grid is connected on top of the high glass stem, not the anode!
Also Marconi.
0.05 mA/V Gm at 4V anode and -2V grid, rises to 0.1 mA/V at +6V anode and -2V grid. Grid current in the order of 10exp-16 A.
A comprehensive article on this very special vacuum tube and its application was given in these pages from Wireless World, November 26th 1936.
The tube was developed in 1930.
Text in other
languages (may
differ)
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| Information source |
- - Manufacturers Literature
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ET1
Emilio Ciardiello
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Just Qvigstad
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ET1: Manufacturer's Literature
Emilio Ciardiello
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