On Nov 26, 2011, at 10:36 AM, Don Latham wrote: > Come on, folks. never hook anything directly to the power line. The > source is just too stiff. Use an opto. I used fiber optic isolation with > my big DC power supply.
I don't disagree on isolation. I will say that Atmel's (and presumably Microchip's) app notes don't give much information on safe construction. Tom wrote a nice page showing a safer-than-average construction for sipping AC main voltage through high resistance: http://www.leapsecond.com/pages/ac-detect/ Kevin _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
