Hi
I agree with Morris. Once the clock is awake you aggressively try to
shut it down again. I have a few badly warn E1Ts and one has a burn in
the zero position. It must have sat glowing in the position for a very
long time. Unlike an oscilloscope tube you have no brightness control as
the beam current is set for you. You also cannot jiggle the image as you
can with a CRT clock. With leading zero suppression, shut down and the
odd slot machine routine I don't think phosphor burn will be the cause
of tube failure.
Grahame
PS nice clock Morris.
On 19/02/2019 07:54, Morris Odell wrote:
The other tubes do the same refresh every 10 seconds. It looks nice
and helps the micro keep track of where they are. Burn in is not a
problem - it doesn't spend that much time with the display active.
Once the PIR is triggered it's only alive for a few minutes.
M
On Tuesday, 19 February 2019 09:27:35 UTC+11, Jon D. wrote:
I love the "slot machine" effect on the seconds E1T tube in the
video.
Do the other tubes need it as well to prevent phosphor burn in ??
Jon D.
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