| Identical to |
E443N
= L491D
= PP4100
= 252
|
| First Series |
1930 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Jul.1930 : -- Original-techn. papers.
|
| Predecessor Tubes |
E443
|
| Successor Tubes |
E443H
|
|
| Base |
Europe 5-Pin (O5A, B5) (Codex=Foo)
|
| Filament |
-: Direct /
If: 1 Ampere /
Vf 4 Volts /
|
| Description |
With 5.5 watts the output power of the E443(N) was increased to almost twice of
the C443. To do so, it required 400 volts as anode and 200 volts as screen
voltage
Text in other
languages (may
differ)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
