Category:Vacuum tubes
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Vacuum tubes aka Thermionic valves
Subcategories
This category has the following 8 subcategories, out of 8 total.
C
D
- Diode tubes (33 P)
H
- Heptodes (1 P)
N
- Nuvistors (8 P)
P
- Pentodes (105 P)
S
- Selected Tubes (2 P)