Radio Antica e Radio d'epoca
EC21
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Stato:
Gran Bretagna (Regno Unito)
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| Identico a |
EC21
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| Valvole
simili |
Altra base:
EC21_9pin
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| Zoccolo |
Loctal-8, B8G (Sylvania, 1938)
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| Filamento |
Vf 6.3 Volt / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC |
| Descrizione |
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.
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| Bibliografia |
Universal Vade-Mecum, Electron Valves and Semiconductor Devices group 127
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| Tube Tester Data |
Avo CT160 |
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EC21: From my schematic collection.
Pier Antonio Aluffi
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Just Qvigstad
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[rmxtube-en]
| Conformità dei dati |
Ulteriori informazioni |
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