My tubes also came from the "guy in Southampton", though I've forgotten his name. My UV LEDs, on the other hand, came from Best Buy in Hong Kong, via Ebay, for $28 a hundred, and I have no part number or other documentation. Today a quick search for "UV LED" on Ebay returns this as the first result - http://www.ebay.com/itm/NEW-100PCS-5mm-Megabright-Ultra-Violet-LED-UV-Lamp-2-500mcd-BESTBUY-/290726116420?pt=LH_DefaultDomain_0&hash=item43b0a07c44 Unbelievably they are now only $6 a hundred, with shipping included, which means after taking off the cost of shipping they're more like 2 cents each. You might suspect for that price they're factory rejects, and you might be right, since about one in 4 of my lot was either dead out of the bag or failed after a minute's use, but who the heck cares when they're cheaper than their own series resistor.
On Tuesday, April 1, 2014 7:02:12 AM UTC-7, Nick wrote: > > For the last Lord knows how many years I've been intending to follow in >> Grahame's footsteps and build an XC-18 clock - I picked up 300 of these >> many years back when the guy in Southampton only wanted about 10p each for >> them - hopefully enough for two clocks. >> > > I'm impressed with Pete's results - it's good that the theory is being > tested and the results quantified as the "triggering in the dark" issue has > been around for a while - Kr85, as has been pointed out, was used for > specifically this reason, but is no longer viable. Let's hope that Pete's > experiments results are repeatable - do you have the details of the > emission characteristics of those LEDs? > > Cheers > > Nick > -- 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/55bd08fc-7e45-43bc-a928-bdc8bc5644de%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
