 |
| Identical to |
E443
|
| Similar
Tubes |
RES664d (different connections)
|
| First Series |
1929 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Feb.1929 : Philips Bulletin
Jun.1930 : - - Manufacturers Literature
|
| Predecessor Tubes |
C443N
|
| Successor Tubes |
1930
E443N
|
|
| Base |
Europe 5-Pin (O5A, B5)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Direct /
If: 1.1 Ampere /
Vf 4 Volts /
|
| Description |
With 5.5 watts the output power of the E443(N) was increased to almost twice of the former C443. To do so, it required 400 volts as anode and 200 volts as screen voltage.
[Jacob Roschÿ, 2003-01-19]
Text in other
languages (may
differ)
|
|
|
|
|
|
J R
Jacob Roschy
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
F. H.
Hermann Fleischanderl
|
|
|
