I did check the circuit through the whole range that it should operate in, based on component data sheets. No issues. I also carefully varied the voltage right around where the regulator output is, to see if there was some very narrow band of sensitivity. Nothing.
-----Original Message----- From: time-nuts [mailto:[email protected]] On Behalf Of Joe Leikhim Sent: Wednesday, December 7, 2016 12:31 PM To: [email protected] Subject: Re: [time-nuts] Totally unrelated, but.. Could the low noise parts actually be counterfeit, relabeled as such? Is the circuit the regulator feeds sensitive to a narrow band of voltage that the "good regulator" is outside of? Try replacing the regulator with a battery supply and resistor divider to attain the working voltage. Move the voltage around. A good potentiometer and stiff filter capacitors are recommended so as not to introduce "pot noise". Is something corrupting your test procedure? I had a circuit that misbehaved due to floating logic pins reacting to static electricity on the work bench. Another time a diode was photosensitive. -- Joe Leikhim Leikhim and Associates Communications Consultants Oviedo, Florida [email protected] 407-982-0446 WWW.LEIKHIM.COM _______________________________________________ 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.
