Hal, The Csac takes 115mW, and a good GPS takes another 100mW or so.
The Csac has a 1pps input for primitive disciplining from the GPS. Turning on the GPS for 5 minutes every hour gives about 150mW total consumption with supply losses. Can't get more stability than that for less power anywhere. Said Sent From iPhone On Sep 25, 2012, at 19:19, Hal Murray <[email protected]> wrote: > > I've seen at least one good web site out there discussing pedaling to > generate electricity for home use. Here is an example I like: > Pedal Power Generator - Electricity From Exercise > http://www.los-gatos.ca.us/davidbu/pedgen.html > > But this is time nuts. Has anybody looked into low powered sources of > time/frequency? What would a time-nut do if living off-grid? (Or just being > a nut and going for low power?) > > Ballpark for a bicycle is 100 watts. If you do that for an hour a day, you > get 4 watts averaged over 24 hours. You could double that by working harder > or longer, but 10x gets tough. > > If I did the math right, tvb's numbers say a TBolt takes 3.25 watts (after > warmup) > http://www.leapsecond.com/pages/tbolt/power.htm > That doesn't leave much leftover for lights and such. > > How good a clock could you get at much lower power? I guess I'm looking for > something (logarithmically) between a watch and a GPSDO. > > > Solar is another possibility. I think that just turns into how much space > you have and/or how much you are willing to spend for solar panels. (and > where you live) > > > -- > These are my opinions. I hate spam. > > > > > _______________________________________________ > 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.
