Radios antiguas y Radios de Colección
WD11
|
País:
Estados Unidos
|
|
| Idéntica a |
WD11
= SLD11
= 11
= C11
|
| Válvulas similares |
Substituya normalmente -diferencia peq.:
M.D.3A
; M11
Otra base:
12
; DE11
; WD12
; WX12
Differences not known by us:
WR11
; X11
|
| Primera serie |
Jan.1922
Saga of the Vacuum Tube, Tyne page 310
|
| Fuente principal
(es) |
Jan.1922 : Saga of the Vacuum Tube, Tyne
|
| Válvulas Predecesoras |
T88_Westinghouse
|
|
Válvulas Sucesoras
|
1923
WD12
WX12
864
|
| Base |
WD-base (Codex=Bw)
|
| Usada en |
Radio/TV-reception etc. |
| Filamento |
Vf 1.1 Volt / If 0.25 Ampere / Direct / Battery = |
| Descripción |
Work on this tube started at the Westinghouse laboratories in Bloomfield, New Jersey in mid to late 1921. It was designed for use as a detector in the Westinghouse Aeriola Senior radio. This set was announced in the RCA catalog "Radio Enters The Home" published June 22nd, 1922. This tube had 5 production variants including the original T10 bulb. Later variants had the T8 bulb. The weight varied.
Oxide coated, first without getter then lime-getter. First form with a brass base (BB) with tip. Second has bakelite base and is smaller, tipped. Third version is bakelite, no tipp, clear. Then bakelite, no tip but opaque getter (not clear). The last verion of this tube had silvered gettering. Plate has a bigger diameter at the base. It was made by a few of the major manufacturers in the US, Mullard in England (M.D.3A)and Philips in Holland listed the base as available. It is not known what type number was used for the Philips tube. .
Texto en otros idiomas
puede diferir
|
| Precios de válvulas |
69 Precios de válvulas (visible
solo para miembros)
|
| Literatura |
Saga of the Vacuum Tube, Tyne p. 310, 312-313
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
-- Collector info (Sammler)
|
WD11: RCA
Anónimo 56 Coleccionista
Mas ...
|
WD11: KoBi
Konrad Birkner † 12.08.2014
|
Just Qvigstad
|
WD11: KoBi
Konrad Birkner † 12.08.2014
Mas ...
|
Número de
modelos en Radiomuseum.org con esta
válvula:53
Colección personal de
Colección personal de un miembro de USA Colección personal de un miembro de D |
|
|
Variantes
First type: Aeriotron; Brass Base; tipped; clear glass envelope;1.25 inch dia.; overall height ca 4.5 inch; no getter; January 1922; Tyne p.310
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Fourth type: Radiotron; Bakelite Base, no tip; clear glass envelope; 1 inch dia.; overall height ca 3.5 inch; lime getter;
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Fifth type: type: Radiotron; Bakelite Base, no tip; opaque glass envelope; 1 inch dia.; overall height ca 3.5 inch; magnesium (?) getter;
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Third type: Radiotron; Bakelite Base, tipped; clear glass envelope; 1 inch dia.; overall height ca 3.6 inch; lime getter;
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Second type: Radiotron; Brass Base; tipped; clear glass envelope;1.25 inch dia.; overall height ca 4.5 inch; lime getter; late in 1922; Tyne p.310
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