Radios antiguas y Radios de Colección
Twin_Apco_UV
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País:
Estados Unidos
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| Idéntica a |
Twin_Apco_UV
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| Válvulas similares |
Otra base:
Twin_Apco
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| Base |
UV-Base (4 Pins+Bayonet, USA 1914 WE)
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| Usada en |
Radio/TV-reception etc. |
| Filamento |
Vf 5 Volt / If 0.25 Ampere / Direct / Battery = |
| Descripción |
This is a very rare early version of the UX based Apco Twin triode. It is two tubes of the UV201A style and was made in 1925. The known tube has an exhaust "tip" and these were also made tipless with the UV base. It contains two complete sets of elements which were connected in parallel except for one end of each filament. When the first filament failed, the second could be brought into service by slightly unscrewing one of the filament pins in the base so that a switch arm could be moved from one contact to another. This brought the second filament into the circuit.
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Dimensiones
(Alt,Ancho,Prof.)
incl.pins/tip |
x x 45 mm / x x 1.77 inch |
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Just Qvigstad
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