Radios antiguas y Radios de Colección
DFA9
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País:
Gran Bretaña (GB)
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| Idéntica a |
DFA9
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Usada en |
Radio/TV-reception etc. |
| Filamento |
Vf 6 Volt / If 0.6 Ampere / Direct / Battery = |
| Descripción |
"For use as Power amplifier for operation of the largest speakers, or as a low power transmitting valve." Mullard.
Va < 250; Ra 2000 ohms; 2.5mA/V
DFA series = Dull Filament Amplifying
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| Literatura |
- - Manufacturers Literature Advertisement Jan 1930
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DFA9: Fin Stewart
Fin Stewart
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Just Qvigstad
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DFA9: Experimental Wireless Dez 1929
Gerhard Eisenbarth
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| Cumplimiento de datos |
Más información |
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