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Old 3rd April 2013, 02:45 PM   #1
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Default Help needed on identifing tube

Can anyone please.help on identifing this tube, there is nothing printed on it at all.
Thanks in advance....
Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

Last edited by Sgkho249; 3rd April 2013 at 11:39 PM.
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Old 3rd April 2013, 04:28 PM   #2
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First tube seems like my A405 and B406 Miniwatt
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Old 3rd April 2013, 04:59 PM   #3
kevinkr is offline kevinkr  United States
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6L6G or 6V6G or similar with a bent pin?

The pictures were not attached correctly and are too small to really look at in detail.. Can you try posting larger attachments?
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Old 3rd April 2013, 11:43 PM   #4
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the three pictures are of the same tubes, its a octal base. without a pin6... a friend of mine said that it looks like a rectifier tube. Could anyone help please....

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Old 3rd April 2013, 11:59 PM   #5
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Is it possible to see plate structure against light? It helps ... usually ...
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Old 4th April 2013, 12:20 AM   #6
kevinkr is offline kevinkr  United States
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It's not a rectifier, it looks a lot like a 6V6G or 6L6G to me based on what I can see of the plate structure. Do you have access to a tube tester? This would be the best way to identify your tube.
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Old 4th April 2013, 12:31 AM   #7
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Click the image to open in full size.
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Old 4th April 2013, 12:40 AM   #8
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too bad too sad, i do not have a tube tester. More picture on the tube. as i can remember i bought it about 9mths back and as far as i can remember i was told that its a rectifier tube, im building a tube power supply, so i need to be sure. Thanks for all input..
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Old 4th April 2013, 12:44 AM   #9
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6L6.

My picture is of a 6BG6, a 6L6 variant, but has the same plate structure.
Most rectifiers use pins 4 and 6 for anode pinouts.

Click the image to open in full size.

Pins 2 and 7 should be filament.

Last edited by DeathRex; 4th April 2013 at 12:52 AM.
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Old 4th April 2013, 12:52 AM   #10
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Quote:
Originally Posted by Sgkho249 View Post
... i was told that its a rectifier tube, im building a tube power supply, so i need to be sure.
Be assured, it is not a recitfier. It's a power pentode of some kind. More then likely a 6L6G as Kevin said. Whoever told you it was a rectifier was wrong. If it did come from a power supply, it was used as a series pass tube as 6L6's often were. And the "dag" coating on the inside of the glass was common on the older 6L6Gs. I have never seen a rectifier tube with an internal dag coating.
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Last edited by HollowState; 4th April 2013 at 12:56 AM.
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