radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

50B2

Information - Help 
ID = 17999
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Triad Television & Mfg. Co.; Pawtucket, RI 
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to 50B2
Similar Tubes
Multiple differences or of other kind:
  50A2_Ballast
First Source (s)
28.May.1935 : Electron Tube Registration List
Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Uc)
Was used by Radio/TV-reception etc.
Filament
Description

50 V drop at 300 mA. Similar to 50A2_Ballast but tap for a single #40 pilot lamp.

 
Information source - - Manufacturers Literature   
Ballast-Tube Handbook; Jacobi 1985   
50b2_app.png
50B2: Manufacturer's Literature
Emilio Ciardiello
50a2_pin~~1.png 50B2: Manufacturer's Literature
Emilio Ciardiello

Just Qvigstad 		50a2_50b2_1~~1.png
50B2: Manufacturer's Literature
Emilio Ciardiello
More ...
Usage in Models 1= 1935?? ; 1= 1935 ; 2= 1947??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of

David Leishman (CDN)
 
usa_tube_50b2_img1.jpg

50B2
 
Forum contributions about this tube
50B2
Threads: 2 | Posts: 4
Hits: 2259     Replies: 0
50B2 (50B2)
David Leishman
29.Mar.12 		  1
50B2 (50B2) 

Hoping someone can change some of the descriptions. I have posted a pic of the 50B2 tube. This type of tube is an iron in hydrogen type power supply. The base is a medium 4 prong ST bulb type (not octal).

Regards.

D Leishman.
 
Hits: 2289     Replies: 2
50B2 or 150B2
Jan Terranea
22.Dec.11 		  1
50B2 or 150B2 

The new picture of this tube seems to be a 150B2 with first "1" missing.

 
Michael Watterson
22.Dec.11 		  2
150B2 

The 50B2 is Octal Ballast Tube, and  drops 50 volts at 300 ma, used before 1939

The 150B2 is voltage regulator and runs at 8.2mA and is B7G. B7G only since 1939.

 

So I agree, it looks like a 150B2 with 1 rubbed off.
Jacob Roschy
22.Dec.11 		  3
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° 

I moved the picture to where it should be.
 
50B2
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