Recently I was able to get hold of some NOS tubes these have completely clear glass, I also noticed compared to my current used ones, the plates have a sort of textured powdery coating to them while my current ones are smooth.
I plugged one in to my Crack to check all was ok and over say 20 minutes you could see the clear glass start taking on that silvering colour. I wondered is this some kind of deposition of what ever the powdery coating covering the plate is to the glass and if some sort of general minimum temperature or initial length of running is required to maximise this burning off to optimise the tubes characteristics?
Any correct terms for the above as I would to like to read up a bit so I have a better understanding of what is happening?
Cheers Jamie
« Last Edit: January 06, 2014, 12:53:26 AM by JamieMcC »
Shoot for the moon if you miss you will still be amongst the stars!