| Identical to |
EF3
|
| Similar
Tubes |
CF3 (Heater different)
VF3 (Heater different)
EF9nT (Heater different)
|
| First Series |
Jul.1936 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Feb.1936 : Funkschau (FS) 1936, # 5
Jan.1936 : Fortschritte der Funk-Technik 1936 # 1
|
| Predecessor Tubes |
EF2
|
| Successor Tubes |
EF5
|
|
| Base |
Europe side contact base P (P8A) (Codex=Sf)
Top contact with a cap
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel, (AC/DC) /
If: 0.24 Ampere /
Vf 6.3 Volts /
|
| Description |
Nachzügler zur ersten europäischen Serie von Autoradioröhren. Die EF3 ist die ZF-
Regelröhre.
Text in other
languages (may
differ)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
