Hi all,
Got a question: How hard is it on a tube to have the HV applied to the
plate w/o the filaments turned on. The reason I ask is that unknown to
me, a relay must have stuck in my power supply control unit and when I
turned my amp off, the voltage to the HV transformer was never turned
off. So I thought the amp had been completely shut down and it wasn't.
I discovered this just prior to the contest on Friday when I went to turn
everything on and noticed the HV supply cabinet was very warm. Then I
noticed the HV meter still read 6KV! It was like this for several days.
Fortunately, the HV cabinet has its own breaker so I am able to manually
turn it off until I fix the control unit.
The tube worked fine all through the contest and it was used HEAVILY. So
I don't think I damaged anything. Just wanted to see though if I have
now shortened my tube life or potentially created any other problems.
73,
Jon
KE9NA
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Jon Ogden
jono@enteract.com
www.qsl.net/ke9na
"A life lived in fear is a life half lived."
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