- Aaron
On Feb 10, 2020, at 04:58, Paul Andrews <pa...@nixies.us> wrote:
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Here's Nick showing off a Scope Clock with an orange P12 phosphor CRT.
https://www.instagram.com/p/B8PIw20HkmH/
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Keep in mind the B&K flying spot scanners use electromagnetic deflection CRTs.
DaveB, NZ
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On Feb 10, 2020, at 12:01 PM, David Forbes <nixie...@gmail.com> wrote:I made a clock with a 3JP12 back in 2002 when I was doing that. It lasted a few weeks. That phosphor is rather delicate!BTW I am working on getting back into the scope clock business, making a laser cutter for the cases and using a Teensy to do the X-Y signal generation. I've already written the code; its DACs are excellent for this job.
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The date today is the '12th',,,,,,,,,,,,,,,,,,,,,,is this an omen to buy P12 CRT's??????? Could be!!! Ira.
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On Feb 12, 2020, at 12:20 PM, Robert G. Schaffrath <robert.s...@gmail.com> wrote:I recall an article I read years ago about the old RADAR tubes and phosphors used. There was a RADAR scope tube that had a mix of two phosphors. One phosphor produced a short persistence bright blue light from the target and the other was the longer persistence P12 type orange phosphor that was excited by the blue phosphor hung around after the blue faded and was refreshed by another "ping" of blue light from the target. An orange filter was placed in front of the tube face to filter out the blue flash which would have been very distracting to the operator.
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On Feb 12, 2020, at 5:12 PM, Nicholas Stock <nick...@gmail.com> wrote:I bought a similar one that allegedly came from Los Alamos...5 gun. I think they made tubes with more guns than that even.
OMG that purple tube is awesome. Anybody got any for sale ?