I know that last night, while building my mains measuring circuit (might as well get in the act), my counter probe was laid next to my A/C - A/C wall wart transformer's termination on a breadboard and it started counting. Took me a second to figure out what was going on. :) It would certainly seem a viable option.
Jimmy... N5SPE On Feb 10, 2014, at 11:57 AM, Tom Van Baak <[email protected]> wrote: >> You should really have isolation from the mains. The transformer scheme >> is fine. I don't like the high value resistor approach. > <...snip...> > > Alternatively, has anyone considered grabbing 50/60 Hz from the air? Just > about any dangling unshielded wire will act as a pickup. Maybe not as robust > a signal, but this is not so much a problem for solutions already using a > hardware or software PLL. And it certainly wins the safety prize. Call it the > iClock Air... > > /tvb > > _______________________________________________ > 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. _______________________________________________ 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.
