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Paul Weaver wrote: > Common in telecoms apps rooms, everything runs off ~50VDC, backed up by > big batteries. Has a secondary advantage of being a "low voltage" device > and not needing the same testing as a normal apps room. > > Big high current DC supplies to several devices have their own interesting behaviours though, involving induction and possible high voltages when things are switched. It is a balance. -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html