 |
| Identical to |
E441
= U4100D
= DG4101
= DW1
= B2_SIF
= 4A15
= RS4141
= RS4341
|
| Similar
Tubes |
REN704d (can normally be replaced - small diff'ce)
E441N (can normally be replaced - small diff'ce)
|
| First Series |
1930 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Nov.1928 : -- Original-techn. papers.
|
|
| Base |
Europe 5-Pin (O5A, B5) (Codex=Fa / sp)
Sidecontact
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel, (AC/DC) /
If: 1 Ampere /
Vf 4 Volts /
|
| Description |
redecessors: none, Successors / Nachfolger: E448, RENS1224, X4122
By its construction this tube is a space- charging-grid tetrode, but should be used as self oscillating frequency converter. The oscillator feedback is applied to grid 1, the input signal to grid 2. Its amplification is low and not to control, the oscillator voltage is closely coupled to the input circuit..
Text in other
languages (may
differ)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
|
|
|
CA
Christian ADAM
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
Philips Röhren Daten 1933
Peter Hoddow
|
|
|
