Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 7229
United States of America (USA)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Half-Wave Vacuum Rectifier   Text 
Identical to 3B24 = CE-3B24 = 732A = RK3B24 = CV812 = CE-230
Similar Tubes
Normally replaceable-slightly different:
  CV709 ; RK72
Other class quality (otherwise equal):
  3B24W ; 3B24WA ; CV4021
Multiple differences or of other kind:
First Source (s)
27.May.1943 : Electron Tube Registration List

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bw) Top contact with a cap.
Was used by Radar
Filament Vf 5 Volts / If 3 Ampere / Direct / Specified voltage AC/DC

High voltage half wave rectifier used as radar clipper/rectifier in airborne sets.

  • Center tapped filament allows operation at 2.5 V, 3A with a single section active.
  • Ppeak inverse voltage 20 kV
  • DC output current 60 mA; peak plate current 300 mA.
  • Plate current values: 30 mA nominal, 150 mA peak.
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
38 x 118 x mm / 1.50 x 4.65 x inch
Weight 62 g / 2.19 oz
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   

socketbild3b24.png 3B24: Aus der "Vademecum" P.H.BRANS
Willy De Grande

More ...

Just Qvigstad
3B24: privatbesitz
Anonymous 938 Collector

Usage in Models 1= 1942?? ; 1= 1943?? ; 1= 1946?? ; 1= 1960??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of



Forum contributions about this tube
Threads: 1 | Posts: 2
Hits: 3103     Replies: 1
Willy De Grande
  1 Hello Hans

Weitere data aus der Vademecum 1948 von P.H.BRANS

Diode gleichrichter,und diode fur Schwundausgleich.
Made by West-Electric
Heiz. 2,5V ; 0,15 A
Anode  30mA
B = 38mm
H = 118mm
Gew.  62 gramm

Grüsse aus Brügge
Willy De Grande
Hans-Thomas Schmidt
  2 Hallo Willy,

die Angaben vom Brans-Vademecum stimmen hier nicht. Richtige Angaben siehe Röhre.

Danke, Hans-Thomas
End of forum contributions about this tube

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]

Data Compliance More Information