Date: Fri, 28 Nov 2014 20:47:22 +0100 From: Ralf Mardorf <ralf.mardorf@rocketmail.com> To: freebsd-questions@freebsd.org Subject: OT: UPS for FreeBSD Message-ID: <20141128204722.561f948e@archlinux> In-Reply-To: <5478CC08.9090307@yahoo.com> References: <CAHieY7QGp2ELF-R91eu=vSrPsimVmVNJQ4kfucQ56PR7EEZmig@mail.gmail.com> <m57qdq$did$1@ger.gmane.org> <54777AB1.9010800@bluerosetech.com> <m581p1$65m$1@ger.gmane.org> <54779629.302@bluerosetech.com> <alpine.BSF.2.11.1411271433320.60866@wonkity.com> <5478BD4F.7020306@yahoo.com> <5478BEE6.30308@bluerosetech.com> <5478CC08.9090307@yahoo.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 28 Nov 2014 14:24:56 -0500 Paul Pathiakis via freebsd-questions <freebsd-questions@freebsd.org> wrote: > I would hope that any power coming out of any UPS is cleaner than > whats coming over the miles of power lines to your building/outlet. Too funny, I didn't followed this thread, but randomly read this mail. Since more than 20 years ago, when switching power supply became the standard power supplies for most gear, most unpleasantness is caused by impact of switching power supplies to the mains. "Very low cost SMPSs may couple electrical switching noise back onto the mains power line, causing interference with A/V equipment connected to the same phase." - http://en.wikipedia.org/wiki/Switched-mode_power_supply Are there other switching power supplies, than "Very low cost" once used in averaged households? "miles of power lines to your building" aren't the issues nowadays, the power switching supplies inside our buildings pollute the mains. Regards, Ralf PS: 99,999999999999% when I needed to repair broken gear in the last years, I needed to repair a f...ine switching power supply.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20141128204722.561f948e>