Title
Vacuum tube type 7AK7
Catalog Number
102735883
Type
Physical object
Description
This is a pentode vacuum tube with a loctal base. Pin 5 is missing by design. The object was accompanied by an index card that had "NR3127 - Box 1 - #15; SYLVANIA; 5-7AK7" in letters printed with a red felt tip pen and "Small pentode used in Whirlwind and SAGE computers,"
Date
1938 ca.
Manufacturer
Sylvania Electric Products, Inc.
Place Manufactured
US
Identifying Numbers
Model number |
7Ak7 |
Printed in brown ink on top of the glass envelope. |
Other number |
16-BR-V2-1 |
Printed vertically in green ink on glass envelope. |
Dimensions
overall: 1 1/8 in x 1 1/8 in x 3 in
Category
Component/vacuum tube