Catalogue de radios anciennes
IT103
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Pays:
Pays-Bas
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| Identique à |
IT103
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| Similaires |
Différent chauffage :
C443
; RES374
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| Fin de production |
Feb.1938 |
| Culot |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928
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| Chauffage |
Vf 4 Volt / If 1.1 Ampère / Half indirect / Specified voltage AC/DC |
| Description |
This is a Thermiode, a glass tube in a shielding of nickel-iron alloy to prevent electric or magnetic interference.
To avoid the Philips penthode patent (suppressor grid connected to the filament/cathode), Tungsram, Radio Record, Marathon, Longlife and others called this kind of tubes a tetrode with penthode characteristics. In fact was the suppressor grid connected to the grid. Nevertheless, this IT103 was a plug-in replacement for the C443 etc.
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| Bibliographie |
Universal Vade-Mecum, Electron Valves and Semiconductor Devices group 207
- - Manufacturers Literature 1933
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IT103
Peter den Boer † 2025
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Just Qvigstad
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IT103: own collection
Peter den Boer † 2025
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[rmxtube-fr, noindex]
| Mentions légales |
Plus d'informations |
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