| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
Double Triode Audio Frequency |
|
Tube ID = 3942
|
 |
| Identical to |
7025
|
| Similar
Tubes |
Normally replaceable-slightly different: ECC83 Other class quality (otherwise equal): 12AX7
|
| First Source
(s) |
24.Feb.1958 : Electron Tube Registration List
|
|
| Base |
Noval, B9A
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 12.6 Volts / If: 0.15 Ampere / -: Indirect / -: Parallel / series AC/DC / |
| Description |
Low-hum, noise and microphonics version of 12AX7. Heaters can be parallel connected for operation at 6.3V, 0.3A.
Text in other
languages (may
differ)
|
| Dimensions (WHD) |
20 x 54 x mm / 0.79 x 2.13 x inch |
| Tube prices |
0 Tube prices (visible for members
only)
|
| Literature |
Essential Characteristics, GE 1973
Tube Lore, Sibley, USA 1996
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Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
|
|
 |
|
P.H.
Peter Hoddow
|
|
GE Data Sheet
Egon Penker
|
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GE Data Sheet
Egon Penker
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