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ID = 22656
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Universal 
  <1925 rare.
Identical to D-II = D2 = PR12_Condor = D-II_Ideezet = DHV_Ideezet = PR12_Pope
First Source (s)
1923 : Saga of the Vacuum Tube, Tyne p.418

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 3.5 Volts / If 0.5 Ampere / Direct / Battery =

Uf=3,5VDC, If=0,5A, Ua=30-75V. Röhren mit dem Aufdruck "Serie" sind zur Heizung mit einem Eisen-Serienwiderstand für 6V-Batterie vorgesehen. Die gleiche Röhre heisst in 1920 und in 1925 und 1926 D2. Sehe D2.

Dimensions (WHD)
incl. pins / tip
30 x 93 x 28 mm / 1.18 x 3.66 x 1.10 inch
Weight 32 g / 1.13 oz
Tube prices 5 Tube prices (visible for members only)
Information source - - Manufacturers Literature   1920

b4direct.png D-II
Peter den Boer

Just Qvigstad
Usage in Models 2= 1923

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of




In 1924/1925 the D II (the - is not a part of the designation) became tipless.

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