Yeah, but this is costly due to custom transformer used. I'd prefer a 12V supply and cheap NE555 converter or 5V + voltage doublers, as this is just cheaper than those 'ready to use' modules from ebay. On USB you are heavily limited with current anyway, so the clock has to be multiplexed or driven with <100% duty cycle. And I see no other point in using 5V power supply than making USB powered clock. USB 2.0 standard gives 500mA, which will be not enough to really use that converter fully :) Of course, cell phone chargers provide more current, but I think that if a clock is designed to have USB type supply, it should be possible to drive directly from a PC. The only reason I see for going with transformer converters is making a battery powered clock. But then I'd recommend using flash lamp cap charging transformers - generally very small and made exactly for converting battery voltages to high voltages.
W dniu poniedziałek, 20 marca 2017 16:42:49 UTC+1 użytkownik Alic napisał: > > The eBay seller vfdclock also sells many different 5V to 170V or higher > supplies (his eBay store is closed for a few days right now) : > > > http://www.ebay.com/itm/131846790948?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT > > http://www.ebay.com/sch/vfdclock/m.html?_nkw=&_armrs=1&_ipg=&_from= > > -- 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/bbaec5c1-f189-4fa0-8bf8-c8e947c5fa87%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
