you can search time-nuts there has been a number of very good discussions on this. Sorry to say how you search is equally a good question.
On Thu, Jul 19, 2012 at 3:19 PM, Chris Hoffman, KG6O <[email protected]>wrote: > Thank you, Azelio! I don't suppose there's an impromptu FAQ page out > there, is there? > > -CH > > On Jul 19, 2012, at 11:58, Azelio Boriani <[email protected]> > wrote: > > > This is sort of a FAQ: the argument was already discussed here. One of > the > > most interesting idea (in my opinion) is to use an RS485 line receiver > like > > the ST3485, MAX483, ADM485. They are actually transceivers so they must > be > > tied permanently in RX. Since they are differential you can also put a > 1:1 > > (or a 1:4 to raise the level) transformer to isolate the input too. > > > > On Thu, Jul 19, 2012 at 6:03 PM, Chris Hoffman <[email protected]> > wrote: > > > >> Can anyone suggest a good reference design for a zero-crossing > detector? I > >> am trying to home an ADC sampler trigger to the 1VRMS (50ohm) 10MHz sin > >> from my XL-DC... And now I'm thinking that I should just home the uC > clock > >> to it, as well. > >> > >> Essentially, I believe that I'm looking for an efficient, stable, and > >> accurate sine-to-square converter... and I'll welcome any advice in this > >> area. > >> > >> This may also be used in a 1KHz 5Vpp IRIG-B decoder... I don't feel like > >> rectifying the signal, to be honest. I want to try to keep a smaller > BOM, > >> sense the waveform primarily, and crunch numbers inside the uC. > >> > >> > >> -CH > >> > >> Chris Hoffman > >> [email protected] > >> http://ar.ctur.us > >> > >> > >> > >> > >> _______________________________________________ > >> 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. > > _______________________________________________ > 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.
