Radios antiguas y Radios de Colección
2B7S
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País:
Estados Unidos
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Marca:
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| Tipo: |
Double Diode-Pentode RF/IF-Stage Controlling (mu) |
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| Idéntica a |
2B7S
= ER2B7
= G-2B7-S
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| Válvulas similares |
Substituya normalmente -diferencia peq.:
2B7
; PH2B7
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| Base |
7-Pin-Base U7A = small, old, USA
Top contact with a cap.
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| Usada en |
Radio/TV-reception etc. |
| Filamento |
Vf 2.5 Volt / If 0.8 Ampere / Indirect / Specified voltage AC/DC |
| Descripción |
Glass type used as combined detector, amplifier, and avc tube.
Which differences of characteristics between 2B7S and 2B7 ?
Babani's International Radio Tube Encylopedia gives somme different value as a 2B7, but Brans Vademecum 1945 and 1961 gives as electrical equivalent. The Majestic tube shield is metallised paint. Replacement tubes made by National Union, Raytheon and Sylvania utilised a sheet metal shield.
Texto en otros idiomas
puede diferir
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Dimensiones
(Alt,Ancho,Prof.)
incl.pins/tip |
x 116 x 38 mm / x 4.57 x 1.50 inch |
| Peso |
39 g / 1.38 oz |
| Literatura |
Babani, International Radio Tube Encyclopaedia p. 4 & 5
-- Collector info (Sammler)
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2B7S: Fin Stewart
Fin Stewart
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Just Qvigstad
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2B7S: Babani 1949-1951
Patrice Zeissloff
Mas ...
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