Antique radios, Old Time Radios
L425D
|
Country:
Germany
|
|
| Identical to |
L425D
= PP430
= C443
= RES364
|
| Similar
Tubes |
Normally replaceable-slightly different:
DW3
; P425_Triotron
; TW425
|
| First year |
1929
Tube leaflet collection E.Erb Analysis by original leaflets
|
|
Successor Tubes
|
L427D
|
| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC |
| Description |
Output pentode, first mentioned Nov. 1928, on market in early 1929
Equivalent types: C443 (Philips), RES364 (Telefunken ), PP430 (Tungsram).
Predecessors: B443, L415D, PP415.
Successors: C443N, RES374, L427D, PP431.
The C443 was designed for AC mains operation only, it is capable of about twice the output power of the former B443. The equivalent types RES364 and PP430 appeared considerably later.
Text in other
languages (may
differ)
|
| Information source |
Taschenbuch zum Röhren-Codex 1948/49 and 1951
|
|
L425D: Telefunken Werkstattbuch
Wolfgang Bauer
|
Just Qvigstad
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L425D: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
Collection of
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