B9D base: Difference between revisions

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It has nine pins with 1.27 mm (0.046") diameter in a 17.45 mm (0.687") 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 [[B9E base|B9E (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 [[B9E base|B9E (Novar) base]] used by comparable American tubes has the same pin circle geometry but the tube pins 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.


==See also==
==See also==
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==Links==
==Links==
* https://en.wikipedia.org/wiki/Tube_socket#Other_socket_styles
* [[wikipedia:Tube_socket#Other_socket_styles | Wikipedia: Tube socket]]


   
   
[[Category:Tube bases]]
[[Category:Tube bases]]
[[Category:Standards]]
[[Category:Standards]]

Latest revision as of 05:25, 15 November 2019

click to enlarge

The 9-pin B9D (Magnoval) tube base (IEC 67-I-36a) is a larger variant of the B9A (Noval) miniature 9-pin base developed for higher-powered European tubes such as the 8608/EL5070, 8233/E55L, PL509/PL519 TV sweep tubes, etc.

It has nine pins with 1.27 mm (0.046") diameter in a 17.45 mm (0.687") pin circle diameter arc.

The similar B9E (Novar) base used by comparable American tubes has the same pin circle geometry but the tube pins 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.

See also

Links