> Here is a (not so very) sneak preview of a CRT Tester that Nick Stock and I > have been working on. It will test a wide range of CRTs from "low voltage" > types up to CRTs requiring 5kV (an add-on board takes that to 12kV). It has > adjustable outputs for complex tubes with geometry electrodes and deflection > blanking.
Oh, that's a thing of beauty! I too have a pile of CRTs from odd little viewfinder units to projection TV jugs. I've been working on lower voltage power supplies (500V-2kV) based on CCFL supplies and multipliers and higher voltage ones based on flyback transformers. A canned device like this would be a big aid in evaluating unknown CRTs and supplying missing voltages until I can get more dedicated supplies built. It will help with the voltages for magnetic deflection and focus CRTs too, but obviously I'll need additional circuitry for them. > <advert>Kits for the electronics and case available soon!</advert> I'm looking forward to it! I looked at the tubetime boards (that's where I got the CCFL idea), but they don't quite meet my needs. I've been using David Forbes' Scope Clock as a CRT tester for a while, but it's aimed at common mid-sized CRTs, and I have a bunch of outliers. - John -- 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/59216DC3-CC81-4877-82C5-DDB639258244%40mac.com. For more options, visit https://groups.google.com/d/optout.
