On 01/06/2018 10:31 PM, Joseph Gwinn wrote: >> ------------------------------ >> >> Message: 2 >> Date: Sat, 6 Jan 2018 09:19:31 -0500 >> From: Bob kb8tq <[email protected]> >> To: Discussion of precise time and frequency measurement >> <[email protected]> >> Subject: Re: [time-nuts] AM vs PM noise of signal sources >> Message-ID: <[email protected]> >> Content-Type: text/plain; charset=utf-8 >> >> Hi >> >> The key point missing is the fact that any real oscillator must have >> a limiter >> in the loop. Otherwise it will “create one” by going over the max >> output of this or >> that amplifier. To the degree that the limiter has issues (limits >> poorly) you will get >> AM noise. > > Hmm. Not strictly true. One can also use an AGC loop, like a wein > bridge oscillator. That said, some kind of softish limiter is commonly > used.
Regardless what non-linear mechanism in play, this remains a non-linear mechanism that achieves the goal. Choose wisely. Cheers, Magnus _______________________________________________ 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.
