Catalogue de radios anciennes
ECH21_9pin
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Pays:
Pays-Bas
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| Identique à |
ECH21_9pin
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| Similaires |
Autre culot / données légèrement diff.:
ECH21
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| Prédécesseurs |
ECH3
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Successeurs
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1941
ECH21
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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 |
The Philips 21- "Key Base" tubes were initially designed in 1940 with the 9-pin base B9G like the EF50. The later series production however was changed in 1942 to the 8-pin Locktal-base B8G designed by Sylvania.
Note the small heater current by 0.2 A compared to the later ECH21 with circa 0,34 A.
Texte dans d'autres
langues (peut différer)
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| Bibliographie |
- - Manufacturers Literature
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ECH21_9pin: original Philips documents
Jacob Roschy
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Just Qvigstad
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ECH21_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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