--------
In message <1958104416.2586171.1577043445...@mail.yahoo.com>, Taka Kamiya via t
ime-nuts writes:
> First question to the group is, how do YOU manage this problem?
It used to be that there were only one kind of switching power-supply: The
noisy ones.
That is no longer true by definition, but there is no easy road to this
particular Damascus.
I have had good results modernizing my HP5065A with a high end
DC/DC converter, in order to reduce the heat, and in this particular
case, improve stability:
http://phk.freebsd.dk/hacks/HP5065A/20150930_dcdc/
Almost no switchmodes (AC/DC or DC/DC) are spec'ed to run into a
serious pi-filter, but so far I have never had problems with it.
The best way to find out if your filtering works, is to switch
the supply between lead-acid (possibly with a linear regulator)
and the switch-mode solution, and see if you can measure any
kind of difference, be it frequency stability or noise spectrum.
--
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@lists.febo.com
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
