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"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
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Comments
We had a really good video of a KT88 going into "Purple Death".
This was induced by an ever increasing heater voltage (IIRC it blew at about 25volts!) . HT was about 600+ and a 1A T fuse was made very black.
I shall have a chat and see if anyone still has the vid on file.
Dave.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Whatever it is, it's cool! When my el84 blew up in the mooer, initially, the amp started sounding louder or... Something. I mean, seriously, great for a few seconds, louder, prouder, and better. Then it'd go back for a mo, then it glowed bright blue, then white then dead. Woops! I vaguely remember a popping sound, which might suggest it was no longer a vacuum by that point.
Luckily, only the valve went and swapping a new one in fixed everything.
Yeah, kind of, but anyway the fact remains, you can't select a gas to make a plasma with. There's a lot more nitrogen than argon in air, and if argon can get in, so can nitrogen. You can't get an argon plasma from an air leak.
I'd bet there's some fairly complex chemistry going on in there with that hot metal. With a pure plasma it's just voltage and gas particles. Also, the more light emitted, the more the colour moves towards white, and pink can easily be mistaken for purple. A pure argon plasma is purple...very distinctive, like the ends of the pic above.
Just about to transition into Melton....
http://imgur.com/Ufd4Zjh.jpg
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Actually now I think of it, bugeron is more of a yellow, flame colour
I had a pair like that a couple of months back, caused by bias failure on a TSL.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein