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](https://www.radiomuseum.org/image.cfm?image=jan.jpg&width=120&height=140)
The new picture of this tube seems to be a 150B2 with first "1" missing.
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150B2
22.Dec.11 13:06
11 from 2222
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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22.Dec.11 14:41
19 from 2222
![Jacob Roschy](https://www.radiomuseum.org/image.cfm?image=jr06.jpg&width=120&height=140)
I moved the picture to where it should be.
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