50B2 or 150B2

ID: 273659
This article refers to the component: To the tube/semiconductor

? 50B2 or 150B2 
22.Dec.11 11:21
11

Jan Terranea (NL)
Articles: 62
Count of Thanks: 5
Jan Terranea

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

 

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 2
150B2 
22.Dec.11 13:06
11 from 2184

Michael Watterson (IRL)
Editor
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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.

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