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PV2_Ediswan

Information - Hilfe 
ID = 28860
       
Land:
Grossbritannien (UK)
Marke: Ediswan, Siemens Edison Swan Electric Co.; London
Entwickler: Ediswan, Siemens Edison Swan Electric Co.; London 
Typ:  Triode (Hoch-) Vakuum   Endstufe 
  <1925 selten.
Identisch mit PV2_Ediswan
Ähnliche
Austauschbar, kleine Unterschiede mögl.
  B205
Erste Serie 1924 ? 70 Years of Radiotubes and V. p241
Erste Quelle(n)
1924 : British Radio Valves - The Vintage Years: 1904-1925 pp,31, 32, 115
1924 : History of the British Radio Valve to 1940 p. 115
Nachfolger PV2_DE  

Sockel Europasockel 4-Stift B4 (Eu A, E, 4A) 1914
Anwender Radio/TV-Empfang etc.
Heizung Uf 6 Volt / If 1.5 Ampere / Direkt / Batterieheizung =
Beschreibung

Bright emitter. Not to be confused with completely different Dull Emitter PV2, here in RMorg as PV2_DE.
Thrower depicts a globe bulb. There is also a variant with a tapered bulb. The "pinch" in the globe shaped bulb is flat while in the tapered bulb it is of a four cornered "X design.

 
Literatur Saga of the Vacuum Tube, Tyne   p.373
70 Years of Radiotubes and V.   p. 192
British Radio Valves - The Classic Years: 1926-1946

b4_base_pins~~227.png PV2_Ediswan: Fin Stewart
Fin Stewart


Just Qvigstad
pv2.gif
PV2_Ediswan: Aus eigenen Unterlagen
Rudolf Osterkamp

Sammlung von

 
pv2.jpg

 

Varianten

this tapered variant is not mentioned in Thrower.



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