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02-13-2019, 11:49 PM
Hi,
I'm considering buying a Precision 920 Tube tester But before I do I need some info. The Short Indicator G-10 Neon bulb is missing and from what I see they are rare and very expensive. Has anyone come up with a cheap DIY replacement for the G-10 Neon lamp-Bulb. If you have can you please leave details on what parts you used. I have read some people say just use a bulb and change the resistor values but, that is hard to do when I have no original G-10 and also have not bought it yet.
I do realize this is not the best tester with limitations But it is only the G-10 that concerns me.
Thanks! Any Ideas ?
(This post was last modified: 02-13-2019, 11:51 PM by
Sampler1.)
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(This post was last modified: 02-14-2019, 08:56 AM by
morzh.)
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The industry std number for G10 is NE-31.
Tom
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When I needed one for my tester I ended up buying a junk tester because I refused to spend $25.00 for a bulb. I imagine you can use a different one but you would need to change the socket .
Henry
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Thank you all for the info. Just ordered the Tube Tester as a project.
Regards,
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I'm 99% a NE-45 has same base, dunno about actual charistics.
Tom
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02-15-2019, 10:21 PM
Thanks but the NE-45 specs are 2ma and size 9/16"
The G-10 or NE-31 is 12ma and Size 1"1/4"
The prices on both are crazy so I guess ill have to mod and use a standard Neon.. I hate to change the configuration and was hoping to figure out a way to use a bulb of normal price to fill the hole in the chassis. Guess not.
Still appreciated very much..
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The current rating would no doubt be dependant on condition of current limiting resistor inside base, I doubt a in spec NE-31 exists. Of course it's all about firing point, I doubt that's in spec either.
I have a 910 plus a couple of 912 & 920, I wouldn't trust short test in any of them. Likely if short is indicated that's believable, but a small amount of leakage will never be indicated.
Tom
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