On Mon, 2011-06-20 at 16:58 -0400, martin@davintech.ca wrote: > On Mon, 20 Jun 2011 14:56:07 -0400, Herbert Graf wrote= : > > They are pretty good though. I've used dozens on various projects over > > the years. > >=20 > > Word of warning: they will fail after about 2 to 3 years of running > > 24/7. Only mode of failure I've seen is they have more and more noise o= n > > the power supply rail, getting progressively worse over 2 to 3 weeks, > > then they just stop. Considering how bloody cheap they are (I think I > > last saw them for $2.69 each) I don't mind them failing after years of > > service. >=20 > So are they certified devices? I.e. UL or CSA? I have seen wall warts > with no rating information which makes me a bit queasy (especially runnin= g > them 24/7) As is common these days: yes, they have the labels saying the are certified, but no, I have no idea if they are indeed certified or if they are counterfeit. TTYL --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .