It's in the section on lock in amplifiers I think. The switch has a clever 3 way action I think but I can't quire remember how it works. I do remember thinking how ingenious it was at the time, since I was designing lock in amplifiers for detecting optical absorbance over 10cm path lengths using photodiodes, instead of the tradional PMTs.
Tom Harris <celephi...@gmail.com> On 13 December 2013 14:19, Brooke Clarke <bro...@pacific.net> wrote: > :Hi Tom: > > I can't find anything in the Table of Contents or in the index. > Can you tell me the page or title of the writeup? > > > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.end2partygovernment.com/2012Issues.html > > Tom Harris wrote: > >> There is a good writeup of the Dicke switch in Horowitz & Hill "The Art of >> Electronics", since Horiwitz is a radioastronomer of note. I've just >> bought >> my daughter a copy for Xmas, poor girl, she wants to be an engineer... >> >> >> Tom Harris <celephi...@gmail.com> >> >> >> On 11 December 2013 13:02, Don Latham <d...@montana.com> wrote: >> >> Brooke Clarke >>> >>> PS When I was working in microwave electronics we talked about the Dicke >>>> radiometer, but I haven't found any definitive >>>> web page about that. >>>> >>> Gotta look at Radio Astronomy pages and history. Actually, Dicke was >>> using that radiometer to look for the microwave cosmic background, but >>> the bell Labs guys had the big antenna. size matters :-) >>> >>> >>> >>> >>> -- >>> "The power of accurate observation is commonly called cynicism by those >>> who have not got it." >>> -George Bernard Shaw >>> >>> >>> Dr. Don Latham AJ7LL >>> Six Mile Systems LLC >>> 17850 Six Mile Road >>> POB 134 >>> Huson, MT, 59846 >>> VOX 406-626-4304 >>> Skype: buffler2 >>> www.lightningforensics.com >>> www.sixmilesystems.com >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. >> >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.