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PM22

Information - Help 
ID = 11491
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Vacuum Pentode   Power/Output 
Identical to PM22 = 230Pen = 220PT
Similar Tubes
Normally replaceable-slightly different:
  CV3649

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Eoo)
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =
Description Early Mullard data quotes filament current 0.3A, later 0.2A. Va=Vs<150. Gm 1.3mA/V Z=62.5k. Mullard offered 4 and 5 pin versions. 
Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
 
pm22_mullard.jpg
PM22: Sammlung IM
Anonymous 557 Collector

 
606_5.png
PM22: Telefunken Werkstattbuch
Wolfgang Bauer

 
uk_mullard_pm22_data.png
PM22: Mfg. data sheet
Jay Kinnard


from Just Qvigstad

Usage in Models 1= 1928 ; 2= 1929 ; 1= 1931? ; 6= 1931 ; 1= 1932? ; 2= 1932 ; 1= 1933 ; 2= 1934? ; 3= 1934 ; 1= 1935? ; 1= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):21


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