On Sun, Feb 08, 2015 at 08:08:23PM -0800, Len Ovens wrote: > >Sometimes you really do have to be an a$$hole about that sort of thing. > > Just did the same thing today... "Can't this wait till after?"... > "No, This is a safety issue." Funny we fixed two safety issues with > one change as the cable went across 20 ft of floor to get to an > outlet, so we got rid of a tripping hazard as well. Sometimes it > just takes speaking up and doing it. Should have looked at it long > time ago. And that's the only right thing to do. Re. putting 10 ohm resistors in the ground connection: if you have two different ground voltages they are likely to be low impedance (if not a good cable connecting them would remove the problem). Assume you have 10 V difference and that the impedance between the two grounds is 10 ohm as well. Then we have 20 ohm total, and a current of 0.5 A. That's 2.5 Watt in your 10 ohm resistor. Which means it will first turn red and then and self-destruct in a puff of smoke. Unless it's a really big resistor. The only solution if you can't have a common ground is to use transformer isolated balanced connections, this allows you to disconnect ground at one end and still have a signal. Without the transformer isolation you could easily blow up either the output or the input, or both. Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
