Chris wrote:
My perpetually drifting 10811 pretty quickly made it to the negative voltage rail on the control voltage.
Is this an oscillator you just powered up after it had been off for a long time? The most common versions of the 0811 are specified for drift of less than 5 x 10e-10 per day after they have been on for a month. IME, they usually meet that spec within a week of being turned on, even if they have been off for a long time. Mine run from about 2 e-11 to 2 e-10 per day (note that they are on continuously).
I put in a 1/4 watt 50 ohm resistor (like the parts list called for). My working hypothesis is that the small resistor was changing impedance due to heat.
The 10811 output is specified as 0.6 Vrms max into 50 ohms, or 7.2 mW. I doubt that heating-induced resistance change was a significant problem. But no harm changing it.
Best regards, Charles _______________________________________________ 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.
