Hi,
This may had been asked before, but I tried searching the forum and can't find an answer.
And I don't see it being used in the DIY lasers that you guys have (I could be wrong), but I have it in my K40 chinese laser.
See the green cylinder on the right? it's connected in series with co2 laser tube's ground. Is this a a resistor or a ballast? Must be important if the Chinese are using it. But I don't see it in the buildlog lasers.
Please enlighten me.