Thank you, they take about 4mA for FSD, however they rarely need to go 
right to the top - a little reservoir capacitor helps.
The IN-13 has an extra lead, and has I guess like a pilot light at the 
bottom which helps the glow start at the right end. I've had a couple where 
the glow broke up, or did not reach the top of the tube, however you can 
burn them in just powered up for a couple of hours to fix that.



On Tuesday, 27 February 2018 21:51:31 UTC, gregebert wrote:
>
> Neat!
>
> I'm surprised that the response on the IN-13's is pretty fast; I just 
> assumed they were sluggish.
> How much current did it take to get maximum-scale ? I can see from the 
> video you get very close to the end.
>
> When I did some bench testing on the ones I bought a few years ago, static 
> testing above 3/4 scale often got weird behavior, such as lighting from the 
> opposite end.
> Did you ever encounter that ?
>

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