Yes, I wrote I searched for that too. This indeed is one circuit I found. At first glance the biasing does not give me the impression it might be a very good oscillator by itself. But then again, that might be a requirement in order to allow it to lock to another signal. James G1PVZ wanted to see how far he could pull it (>10% it seems). And tested how it tracked FM modulation.
For purposes of a very pure harmonic frequency one might have to start with a better oscillator. I played a bit with SPICE to see if I could make a high Q oscillator lock, but with limited success. Perhaps it needs much more time to start locking. I guess building something and measure it might be faster. Joop >Joop, > >you may also search for "synchronous oscillator". You will find for example: > >http://www.amalgamate2000.com/radio-hobbies/radio/synchronous_oscillator.htm > >Best regards >Ulrich > >> -----Ursprungliche Nachricht----- >> Von: time-nuts-bounces at febo.com >> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Joop >> Gesendet: Mittwoch, 10. Februar 2010 13:50 >> An: time-nuts at febo.com >> Betreff: [time-nuts] injection locking >> >> >> >You can even build an injection locked divide by 5 stage. >> Choosing the >> >right oscillator topology and injection method allows high level >> >injection to be used with an LC oscillator. >> > >> >Bruce >> > >> >> Are there references to some practical circuits? That would be great. >> >> A google search on "injection locking" and "synchronous >> oscillator" results in a lot of conceptual descriptions but >> nothing that one can build, try out and study. Maybe some of >> the scientific articles or books contain circuits, but I am >> not a IEEE member. >> >> Cheers, >> Joop > _______________________________________________ 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.
