About the author : Dalibor
So, there is my first nixie tube. I was really eager to make anything sealed, so I didn’t pay much attention to details and lifetime of the tube. There are two (stainless steel) cathodes – “0” and “7”, a small piece of stainless steel sheet is used as the anode. Distance of the cathodes to the anode is different, so behaviour (breakdown voltage, current needed) is different – it is easier to light the “7”, the “0” gives uneven glow. However, when I fill it on the manifold, both striked nicely, I think that some moisture from the glass was evaporated into tube during the tip-off.
Some data:
- 38 torr total pressure
- 0.2 torr of Argon
- striking voltage for the “7” somewhere around 320V
- 9k1 resistor used
- digit size around 25mm
Update:
- it has no getter
- it is not baked, just the glass envelope was heated for a few minutes with hair dryer
2 Comments
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Moc pěkné, jen se nedovedu představit jak tam naskládat 10 čísel a aby všechny svítily stejně… :)
Jinak dotaz, co používáš za zdroj napětí na testování?
Díky ;-) Budu muset použít trubici o větším průměru a udělat anodu kolem dokola čísel, tak jak to je v originálních digitronech – toto bude hned další pokus. Zdroj jsem si musel udělat, dává cca 40-500V, takže pro takovéto hrátky plně dostačuje. http://daliborfarny.com/hv-power-supply/