Assuming a nonlinearity, a distortion or partly clipping of only one halfwave, would result in a massive even harmonic, as the 200Hz in the example. From this point of view "as expected", but a different distortion could as well result in any other even harmonic.
Peter Am Sonntag, 18. September 2016 schrieb David C. Partridge : > Thanks, that makes sense. Is the PN plot much as expected, or is it > "could do better"? > > Thanks again > Dave > -----Original Message----- > From: time-nuts [mailto:[email protected] <javascript:;>] On > Behalf Of Magnus Danielson > Sent: 18 September 2016 11:56 > To: [email protected] <javascript:;> > Cc: [email protected] <javascript:;> > Subject: Re: [time-nuts] Thunderbolt spurs on 10MHz output at 100Hz and > 200Hz from signal. > > Hi, > > On 09/18/2016 12:26 PM, David C. Partridge wrote: > > The local power is 50Hz, so I can understand the 100Hz spurs, but I > > don't quite "get" where the 200Hz spurs are coming from. Or is that > > just BAU harmonics? > > Consider full-wave rectification of 50 Hz, the power consumption load on > the capacitor after the rectifier creates an inverse sawtooth wave of > 100 Hz, and sawtooth waveshape have both even and odd harmonics. > > While much of this is regulated out in the next step, some of it makes it > though. > > Cheers, > Magnus > > > > > > > Thanks > > > > Dave > > > > > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] <javascript:;> 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] <javascript:;> 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] <javascript:;> > 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.
