Re: [neonixie-l] Re: IN-9 problem

[Joe Croft]

To solve the glow starting from the center or top of the tube, i never turn the 
tube fully off. I will turn it on full then ramp the current down until a small 
segment is still lit. This helped make them much more reliable.

-joe

On Tuesday, October 8, 2019, gregebert wrote:
> I did limited experimenting with these tubes. What I found is that a 
> current-controlled supply is the only way to get repeatable behavior out of 
> those tubes.
> If I just used a traditional variable-DC supply with a series resistor, I 
> had erratic behavior such as glowing from the opposite end or from the 
> middle.
> 
> For the amount of energy consumed, they produce substantially less light 
> than NE-2 bulbs. I think I had to pump almost 20mA into mine to get 90% 
> glow, which is twice the spec limit.
> 
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Re: [neonixie-l] Re: IN-9 problem

[Joe Croft]

Give them 6 to 12 hours. This is what I have learned over time. In-13s are
more reliable at this than in-9s. On my kits I fing I get a 25% loss.

-joe

On Sun, Nov 25, 2018, 11:23 AM Jon 
> Are you sure your current regulator circuit is capable of being set to
> sink >10mA? You should be able to test it at a lower voltage without the
> IN9 in place to experimentally verify that.
>
> Jon.
>
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