The narrow pulses are easily filtered by the power supply because the frequency distribution of the power consumption has a much smaller component at 1Hz.
At 1Hz, the power supply filters nothing. Didier KO4BB Sent from my BlackBerry Wireless thingy while I do other things... -----Original Message----- From: Mike S <[email protected]> Sender: [email protected] Date: Mon, 14 May 2012 20:44:04 To: <[email protected]> Reply-To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] Why are 1PPS signals so skinny? On 5/14/2012 8:21 PM, Tom Van Baak wrote: > one day during an experiment where I was > comparing a large set of clocks I noticed my lab's digital AC power > meter was jumping by tens of watts every second. > > The last thing you want > in a precision timing lab is to load your AC line down exactly once a > second. How does a short pulse help? It's still "tens of watts every second," but instead of lasting 0.5 seconds, it lasts 0.00005 seconds. Less power used overall, but still the same sudden change on the second. _______________________________________________ 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.
