Ah.. The two A3-units I have are labelled Series 820 and 836. Luckily, there has been no problem adjusting thetrimmer capacitors. The inductor I do not dareto touch. I know too well how brittle a stuck ferrite core is...
Can someone point to a downloadable manualwith schematics/parts list for the 2644A-version? I did create a "Replica" of a later version of the A7 AC-amplifierusning OP-07's and precision film capacitors whichperformed very well. As long as semiconductors are availableI would not hesitate to create a replica of the A3 as wellshould it come to that. One question for Corby Dawson: What type was the OP-Ampused in your updated integrator? I have not been able to find itor an equivalent. OK to use OPA111AM? Best Regards Ulf Kylenfall _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
