Enrico, you are right: Both of these articles should be read with Collins's perhaps the better (and newer!) one.
There is however one question remaining for me: When I learned electronics it was generally considered bad design to let an amplifier run into limiting due to supply limitations. If limiting was needed, so was the rule, then it should be accomplished by planned feedback, say an pair of antiparallel diodes in the feedback path. Can you give some comments on whether this also applies to ZCDs or if really supply based limiting is necessary? Best regards Ulrich Bangert > -----Ursprüngliche Nachricht----- > Von: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Im Auftrag von Enrico Rubiola > Gesendet: Donnerstag, 28. Juni 2007 16:25 > An: Discussion of precise time and frequency measurement > Betreff: Re: [time-nuts] ? phase comparison or other device > > > Dear time-nuts, > there is another article about zero crossing detection, > comes after the very wise article written by my friend J. > Dick Cheers, Enrico > http://rubiola.org/hidden/collins96comm-zero-crossing-detector.pdf http://rubiola.org/hidden/dick90ptti-dual-mixer-dc-amplifier.pdf Enrico Rubiola professor of electronics web: http://rubiola.org e-mail: [EMAIL PROTECTED] FEMTO-ST Institute 32 av. de l'Observatoire 25044 Besancon, FRANCE voice: +33(0)381.853940 (E.Rubiola) voice: +33(0)381.853999 (switchboard) fax: +33(0)381.853998 _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
