On Friday, May 09, 2014 06:05:47 AM Ralf Mardorf wrote: > On Thu, 2014-05-08 at 18:02 -0500, Reuben Martin wrote: > > On Friday, May 09, 2014 12:44:00 AM Jörn Nettingsmeier wrote: > > > On 05/08/2014 09:30 PM, Jonathan E Brickman wrote: > > > > AC power ground lifts sometimes have helped, sometimes > > > > > > There is no such thing as an AC power ground lift. The correct term, and > > > please don't take it personally, is _criminal_ _incompetence_. > > > > It sometimes makes sense to lift the AC ground if you are pulling power > > from more than one source. (To prevent ground loops) As long everything > > is grounded to the remaining source correctly. > > Potential difference by getting the power from different main jacks or > experiencing ground loops, because you don't care about a correct > grounding are no excuse to give a life-endangering "hint". > I'm not suggesting to cut the ground pin off. When you use an AC ground lift they come with a metal ring to re-direct the ground connection so that equipment using different power sources can share a common ground. Like one of these: http://www.parts-express.com/ac-3-prong-ground-lift-grounding-plug-adapter--110-211 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
