B9E base: Difference between revisions
Jump to navigation
Jump to search
(Created page with "thumb|right|350px|click to enlarge The 9-pin '''B9E (Novar) tube base''' is a larger variant of the {{B9A base}} developed for higher-powered American tu...") |
No edit summary |
||
| Line 6: | Line 6: | ||
The similar [[B9D base|B9D (Magnoval) based]] used by comparable European tubes has the same pin circle geometry but the tube have a diameter of 1.27 mm (0.046"). Inserting Magnoval tubes into Novar sockets by force will widen the latter's contacts, thereby damaging the socket, whereas a Novar tube will not make reliable contact in a Magnoval socket. | The similar [[B9D base|B9D (Magnoval) based]] used by comparable European tubes has the same pin circle geometry but the tube have a diameter of 1.27 mm (0.046"). Inserting Magnoval tubes into Novar sockets by force will widen the latter's contacts, thereby damaging the socket, whereas a Novar tube will not make reliable contact in a Magnoval socket. | ||
Moreover, many Novar tubes have a glass nipple at bottom of tube which requires a center hole in the socket. | |||
==See also== | ==See also== | ||
Revision as of 00:31, 5 October 2018
The 9-pin B9E (Novar) tube base is a larger variant of the B9A (Noval) miniature 9-pin base developed for higher-powered American tubes such as the 7868, 6JE6A, etc.
It has nine pins with 1.02 mm (0.038") diameter in a 17.45 mm (0.687") pin circle diameter arc.
The similar B9D (Magnoval) based used by comparable European tubes has the same pin circle geometry but the tube have a diameter of 1.27 mm (0.046"). Inserting Magnoval tubes into Novar sockets by force will widen the latter's contacts, thereby damaging the socket, whereas a Novar tube will not make reliable contact in a Magnoval socket.
Moreover, many Novar tubes have a glass nipple at bottom of tube which requires a center hole in the socket.