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In Reply to: RE: 845 posted by Triode_Kingdom on July 20, 2015 at 18:10:21:
Ok, can I politely ask what it is you are saying so we are on the same page? What specifically can't we test for?
Of course the ultimate test is always in the product. But using a tester that does not normally provide for an 845 could be reasonably used by adopting some sort of adaptor. This tester at say half the USUAL operating voltage of the tube and at the same or if possible even higher current but within the ratings of the tube should provide an extremely high degree of confidence that he tube is good and doing what it was designed to do.
In addition, a good tester can provide other performance information such as actual curves etc (some testers at least). But let's face it, often the user is only interested in whether the tube actually works, heaters etc and that the tube has good emission.
My position (in response to the poster's question) is simply that the idea of some form of tube adaptor is very valid and useful. Some testers even provide means of testing tubes that are not fully catered for, clip leads etc.
Naz
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