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#1
 
10-05-2009, 08:38 PM
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I have a tube that is about 16 months old. When I first got it it could cut at 22% speed at 90% power all day long drawing 25mA. Slowly over time it reduced to about 15% speed still at 90% power and still drawing 25mA. Now it's down to cutting at about 11% still at 90% power and still at 25mA. Is this the way a tube fades away? Just a gradual loss of power? I can't tell if the tube is as bright as it used to be but I suspect it's not. Mike
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#2
10-06-2009, 01:34 AM
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| Mike, This is not abnormal for a sealed gas tube. There is probably some visible deposition of the electrodes on the glass tube but otherwise it will appear normal. If you've been using it for 4hrs a day during those 16 months, it's probably got around 1600 hrs on the tube so your results sound average. Zax. |
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