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B9D base: Difference between revisions
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The 9-pin '''B9D (Magnoval) tube base''' (IEC 67-I-36a) is a larger variant of the {{B9A base}} developed for higher-powered Europeantubes such as the [[8608]]/EL5070, PL509/PL519 TV sweep tubes, etc. | The 9-pin '''B9D (Magnoval) tube base''' (IEC 67-I-36a) is a larger variant of the {{B9A base}} developed for higher-powered Europeantubes such as the [[8608]]/EL5070, PL509/PL519 TV sweep tubes, etc. | ||
It has nine pins with 1.27 mm (0.046") diameter in a 17.45 mm pin circle diameter arc. | It has nine pins with 1.27 mm (0.046") diameter in a 17.45 mm (0.687") pin circle diameter arc. | ||
The similar [[Novar base]] used by comparable American tubes has the same pin circle geometry but the tube have a diameter of only 1.02 mm (0.038"). Inserting Magnoval tubes into Novar sockets by force will widen the latter's contacts, thereby damaging the socket. | The similar [[Novar base]] used by comparable American tubes has the same pin circle geometry but the tube have a diameter of only 1.02 mm (0.038"). Inserting Magnoval tubes into Novar sockets by force will widen the latter's contacts, thereby damaging the socket. | ||