Hi If you approach this as “restoring a classic car”, then you repair the beast. From a practical standpoint, looking at the schematic and what’s in the divider setup ….. it looks like a < $2 PIC or ($3 STM32 board ) would replace almost everything there. That’s not quite accurate, but it’s pretty close. Getting it all to work would take a bit of effort. On the other hand somebody may have a great big pile of modules running around. Replacement may be cheaper / easier than you think.
Bob > On May 16, 2017, at 4:33 PM, Ulf Kylenfall via time-nuts <time-nuts@febo.com> > wrote: > > > Starting to trouble-shoot some of the 5065A circuitryI saw that the > (mechanical) clock drive flipflop IC1of the digital divider ass:y A16 is > behaving very strange. > All of the voltage regulator circuitry in this ass:y is working,providing > 4.2V and so on, but IC1 and the two transistorsQ11 and Q12 exhibits a strange > behavior. > When IC1 is driven by a 1PPS squarewave of 0...4.2Vthe outputs of the > transistors goes from either 0...4.2VOR 4.2...13V OR 0...13V in a random > pattern.I can see this also at the bases of the transistors.The 13.3V is > stable > That the 1820-0313 is unobtanium I can understand.Has anyone created an > equvalent based on discretesor is there a suitable SMD "single" flip-flop > like single gatesthat could be suitable? > (Just want to know if I should scrap the Option 01 and 03alltogether) > UlfSM6GXV > _______________________________________________ > 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.
