Base diagrams correspond
to the codes in "Base" columns of the tube-data tables. Bottom views are shown
throughout.
Base connections are abbreviated as follows: BS - Base Sleeve NC - No Connection F -
Filament P - Plate G - Grid PB F - Beam Plates H-
Heater S - Shell IC - Internal Connection K - Cathode
Alphabetical subscripts indicate structures in multistructure tubes. D = diode, P = pentode, T = triode, HX
= hexode Subscript CT indicates filament or heater center tap. Generally, when Pin 1 of a metal-envelope
tube (except all triodes) is shown connected to the envelope, Pin 1 of a glass-envelope counterpart (suffix G or
GT) is connected to an internal shield.
Related Pages on RF Cafe - Tube
Base Diagrams - A Course in
Radio Fundamentals-Vacuum Tubes Sep 1942 QST -
Electrons on Parade
Tube Production Video by RCA c.1942 -
NEETS Module 6 - Vacuum Tubes
- Vacuum Tube Vendors
•
Click
here to order these tube bases in Visio format! •
Virtual Valve Website • The complete
1951 Sylvania Tube
Catalog (15MB) • Here are
tube socket dimensioned drawings.
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