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-   -   Ever seen one of these ? (http://www.videokarma.org/showthread.php?t=270160)

init4fun 02-18-2018 02:12 PM

Ever seen one of these ?
 
2 Attachment(s)
Now I know everybody has seen the version that plugs into 110 and uses a neon light to indicate heater continuity , but this is the first battery powered one I've ever seen . Talk about handy for finding open heater tubes* it's about the size of a pack of cigarettes and doesn't need AC power .

*Yes I do realize that these simple heater checkers only work with the most common heater base pinout tubes (2 & 7 for Octals , 3 & 4 for 7 pin , and so on) and not all tube's heaters can be accurately checked with it . Here you see it indicating heater continuity on a 6AL5 .

MadMan 02-18-2018 09:59 PM

And it'll test picture tubes?

Noice.


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