Dave wrote:
Getting the required Thunderbolt supply rails from a nominal 12v dc supply of doubtful cleanliness is an issue that also needs to be addressed. I'm still mulling over that one. (and using a triple output switcher from an inverter backed mains supply meantime!) The ex-telco GPSDOs all run on a nominal 24-50 volt DC supply but I don't know how they generate their internal supplies. I suspect switchers?
Yes, they typically have two or three flat-pack DC-DC converters inside. I have converted a number of them by replacing the DC-DC converters and feeding the circuitry from a mains-operated linear DC supply (usually because one or more of the DC-DC converters was fried and I saw it as a golden opportunity rather than a problem of locating spare converters of invariably questionable provenance).
Best regards, Charles _______________________________________________ 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.
