Radio Antica e Radio d'epoca
GRD7
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Stato:
Gran Bretagna (Regno Unito)
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Produttore:
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Ferranti, GB |
| Tipo: |
VALVOLA SPECIALE (altro tipo o sconosc.) Testo |
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| Identico a |
GRD7
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| Zoccolo |
Octal (Int.Octal, IO) K8A, USA 1935
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| Utilizzata per |
Technology / Measurement |
| Filamento |
Vf 6 Volt / Direct |
| Descrizione |
Cylindrical diode with guard cylinders at each end. Tungsten filament
Designed as a laboratory device with which e/m ratio can be estimated through the application of external magnetic fields whilst measuring the anode current as in the cylindrical magnetrin devised by Hull. Also usable as saturated diode in AC voltage stabilizing circuits
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| Bibliografia |
-- Original-techn. papers.
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Just Qvigstad
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GRD7: Manufacturer's Literature
Emilio Ciardiello
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