| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
Double Triode Audio Frequency |
|
Tube ID = 3942
|
 |
| Identical to |
7025
|
| Similar
Tubes |
12AX7 (other class quality (otherw. equal))
ECC83 (can normally be replaced - small diff'ce)
|
| First Source
(s) |
24.Feb.1958 : Electron Tube Registration List
|
|
| Base |
Noval, B9A
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel / series AC/DC /
If: 0.15 Ampere /
Vf 12.6 Volts /
|
| 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
|
|
|
| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
|
|
|
|
P.H.
Peter Hoddow
|
|
GE Data Sheet
Egon Penker
|
|
GE Data Sheet
Egon Penker
|
|
|
