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20P4

Information - Help 
ID = 32186
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Developer: Mazda = Valve (Tube) brand GB (see also France) 
Tube type:  Beam Power Tube   Power/Output 
Identical to 20P4
Similar Tubes
Other characteristic (electr. data):
  20P1

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 38 Volts / If 0.2 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Description

TV Line Scan or pulse operation. Pa <15W; Va <400 or 6000 peak.

 
 
a_20p4_1.jpg
20P4: FC
Frank Cuffe

More ...
 
20p4_data.png
20P4: Ediswan-Mazda Data Book 1956-57
Anonymous 15 Collector


from Just Qvigstad

Usage in Models 6= 1953 ; 6= 1954 ; 2= 1955

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):14


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