Hi The medical wall warts (at least the US ones) are a nice option. If you get them from the importer, the cost adder is in the 20 to 30% range. The great thing they do is to break the ground connection between the AC supply line and the output negative. It’s not a prefect solution, but it’s a start.
Bob > On Dec 19, 2015, at 3:12 AM, Poul-Henning Kamp <p...@phk.freebsd.dk> wrote: > > -------- > In message <20151219095948.xmkoo...@smtp17.mail.yandex.net>, Charles > Steinmetz writes: > >> There is a reason why some power transformers cost $385 and others >> with similar basic specs (voltage, current) cost $22. > > For sensitive stuff I usually pick power supplies (of all kind) > which are certified for medical use, they usually have wastly > superior specs on all these "secondary" paramters, but only > twice the cost. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > p...@freebsd.org | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > _______________________________________________ > 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.
