tube tester

General discussion area for tube amps.

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vibratoking
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Re: tube tester

Post by vibratoking »

So a closed filament is enough information for you for any tube?
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jelle
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Re: tube tester

Post by jelle »

Remember he is from NJ.... :lol:
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Blackburn
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Location: Texas

Re: tube tester

Post by Blackburn »

Figured I'd show my B&K tester. Got it when I came into some money a while back. Can't believe this thing still runs. Nice and simple for my purposes.
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HeeBGB
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Re: tube tester

Post by HeeBGB »

Hey if it lights up I can sell it as NOS
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Blackburn
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Re: tube tester

Post by Blackburn »

Yeah, works great. I've been considering selling it because I don't have any tubes die on me. Just test em when I get em and don't worry after that.
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jelle
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Re: tube tester

Post by jelle »

HeeBGB wrote:Hey if it lights up I can sell it as NOS
:lol: :lol: :lol:
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Reeltarded
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Re: tube tester

Post by Reeltarded »

haha

A matched quad would be nice. More light.
Signatures have a 255 character limit that I could abuse, but I am not Cecil B. DeMille.
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Blackburn
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Location: Texas

Re: tube tester

Post by Blackburn »

Hah! Had a DOH moment there. I don't sell tubes. Thing does give a good indication of a good one versus a not so good one though, but I wouldn't sell NOS stuff anyway. I have too much of a problem letting go. :mrgreen:
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randalp3000
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Re: tube tester

Post by randalp3000 »

These are pretty good
[IMG:800:478]http://i1233.photobucket.com/albums/ff388/randalp3000/IMAG0084800x478.jpg[/img]

But I like this one much better now, I think plate current and resistance are very important to measure along with transconductance and emission. It cost me an amp or two but it was worth it.
[IMG:500:835]http://i1233.photobucket.com/albums/ff388/randalp3000/IMAG0191_zpsc522f3a9.jpg[/img]
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mcinku
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Re: tube tester

Post by mcinku »

I use a Longhin tubetester... very good one and quite reasonably priced
http://www.german-vintage-loudspeakers. ... esters.htm

Unfortunately the guy who was making these it's not longer with us, so I guess this testers can't be purchased anymore.
Mine can go up to 450V plate and there were many models... unfortunately not longer available.

http://www.remusic.it/index.php?MasterI ... 945d2fadab
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selloutrr
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Location: Southern California

Re: tube tester

Post by selloutrr »

randalp3000 wrote:These are pretty good
[IMG:800:478]http://i1233.photobucket.com/albums/ff388/randalp3000/IMAG0084800x478.jpg[/img]

But I like this one much better now, I think plate current and resistance are very important to measure along with transconductance and emission. It cost me an amp or two but it was worth it.
[IMG:500:835]http://i1233.photobucket.com/albums/ff388/randalp3000/IMAG0191_zpsc522f3a9.jpg[/img]
You run the same setup as I have. You will be very happy.
Word of advice. Use the maximatcher for fault testing before the Amplitrex. I've blown up my Amplitrex from a shorting EL34.

Fire on the bench is always exciting. Good customer service. It was fixed and back on the bench in a week. I forget if it was a software or power short that made it into a portable camp stove... But since you have the ability to test I recommend doing it.

Lets see what else... Computer mode.. Read the directions you have to open the windows in a certain order for proper testing. The brother label maker is awesome as well as printable test results. Download a .pdf print converter so you can convert the data sheets to email without a scanner.... Don't forget file maintenance when you save.. Label and make file folders so you can go back and find what you are looking for.
Last ... Make sure you select the correct tube and test. If not it will run the test anyway on most tubes. I've fried a few tubes that had lost the silk screening. Guess that they were.

Enjoy!
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Structo
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Re: tube tester

Post by Structo »

Those are some nice toys! :D
Tom

Don't let that smoke out!
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