Antique radios, Old Time Radios
R677
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Country:
France
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| Identical to |
R677
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
2 Sidecontacts.
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| Filament |
Vf 0.6 Volts / If 1.8 Ampere / Direct |
| Description |
Es handelt sich um eine Kurzfadenröhre für Wechselstromheizung. Der Heizfadenanschluss ist an die beiden Seitenschrauben gelegt, um Kontaktprobleme wegen des sehr niedrigen Fadenwiderstandes zu umgehen.
Christian Adam teilte uns folgende Daten mit:
S= 1,7mA; µ= 7; Ri= 4kOhm; Ua max= 200V
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| Tube prices |
1 Tube prices (visible for members
only)
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R677: Anonym
Wolfgang Holtmann
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Just Qvigstad
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Collection of
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