Catalogue de radios anciennes
EF22_9pin
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Pays:
Pays-Bas
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| Identique à |
EF22_9pin
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| Similaires |
Différent culot :
EF8
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| Prédécesseurs |
EF8
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Successeurs
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EF22
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| Culot |
Loctal-9-Pin (B9G)
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| Chauffage |
Vf 6.3 Volt / If 0.2 Ampère / Indirect / Specified voltage AND current AC/DC |
| Description |
Low noise HF preamp tube
The Philips 21- "Key Base" tubes were initially designed in 1940 with the 9-pin base B9G like the EF50. The later series production from 1942 on however was changed to the 8-pin Locktal-base B8G designed by Sylvania.
Texte dans d'autres
langues (peut différer)
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| Bibliographie |
- - Manufacturers Literature
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EF22_9pin: original Philips documents
Jacob Roschy
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Just Qvigstad
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EF22_9pin: original Philips documents
Jacob Roschy
Plus d'infos ...
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Collection de
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[rmxtube-fr, noindex]
| Mentions légales |
Plus d'informations |
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