Hi Aaron, Thanks for the reply. Yes the CRT bug bit me. Ill gladly share the links. I will post them and copy paste the relevant blurbs.
https://groups.yahoo.com/neo/groups/NEONIXIE-L/conversations/topics/44646 "shihslakji" I made a scope clock using the Russian 3LO1 tube and found the phosphor lifetime is measured in DAYS. It took considerably less than 100 days (more like six weeks) for the brightness to fade to practically nothing in the frequently-written parts of the screen near the center, leaving just the tips of the hands showing. I replaced the tube and the second one went just as fast. They're garbage. http://svo.2.staticpublic.s3-website-us-east-1.amazonaws.com/zloshnik/index.en.html At first I was going to build a CRT clock. But after learning that 3ЛО1И has a very short resource, some 1000 hours, I changed my mind. Zloshnik does not try to be a clock. And now petehand has kindly chimed in for the 3rd person n to say that the 3LO tube is not up for the task as a long term clock. You are right on the auto off and auto dimming, But it seems that the tube still is sub par compared to the other US tubes? Spares are the only way.... But at XX$a pop, It might be ideal just ot buy a high quality one from the get go. What tube is relatively cheap these days with a long history of proper functioning 2AP1? Thanks again for your reply Aaron. Christian On Mon, Jun 1, 2015 at 4:18 AM, Oscilloclock <[email protected]> wrote: > CRTs are just fabulous! Welcome to the looney bin. > > Would you mind posting links to those threads? I haven't chanced upon any > holistic research comparing phosphor life across CRT types, so if anyone > knows of such it would be fun to see. I personally use as a rule of thumb > 2000 hours useful continuous life at normal intensity for vintage NOS tubes > made by brand manufacturers such as Sylvania or Toshiba in the U.S. or > Japan. Multiplied by 10 for Tektronix and HP! :) > > General ways I avoid the grave disappointment of an early CRT failure: > > 1. Auto-power off (and On - in my Wishlist) > 2. Auto or manual dimming to save the phosphor > 3. Screen saver (bump or image change) > 4. Soft-start > 5. HV application AFTER heater is warmed up (Wishlist) > 6. Secure LOTs of spares! > > Aaron > > -- > You received this message because you are subscribed to a topic in the > Google Groups "neonixie-l" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/neonixie-l/QMN4YkIpSxA/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To post to this group, send an email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/e524002d-5f67-4a45-a862-2640f1ded9a5%40googlegroups.com > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAP7awz8W1Vk_ZQ6Y_mHfxgfuW9uyEyi2aF-XaQOyjWJCW3doTQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
