If the 3-500Z has stood for a long time unused I suggest you use the
'Reactivation 3-500Z' procedure by PA0FRI, here:
http://pa0fri.home.xs4all.nl/Lineairs/TL922/tl-922eng.htm
When I did this with a new-old-stock tube I used 40V and had no
significant current indication for about 1.5 days, then the current
meter started to 'flick' a few milli-amps and back to nothing and then
after a few more hours it started a constant reading of around 50-60mA
which then rose until it hit my current limit.
I used a pair of 0-20DC bench power supplies in series to get 40V and
set the current limit at 400mA.
After the reactivation I put the tube in a PA and it worked fine.
Mike G8TIC
On 03/08/2015 20:13, w4foa@comcast.net wrote:
Please forgive my ignorance.
I am going to install a new (old stock) 3-500Z in my amp. Are there procedures that I must follow.
I've read and heard about "getting" but I don't have a clue what that means. I think it
means "burning in" but not clear what the procedure should be.
Anyone help?
Thanks in advance!
73
Tony, W4FOA
Watch your thoughts; they become words.
Watch your words; they become actions.
Watch your actions; they become habits.
Watch your habits; they become character.
Watch your character; it becomes your destiny.
Frank Outlaw
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