Consider the equivalent circuit of a common ground for two separate supplies. Any resistance or inductance can cause the effective voltage of one supply to be affected by the other as the current drawn varies. This is assuming a common return to the ground star. Separate the returns and one supply does not affect the other. The star ground may jump around, but all circuits are affected equally.
Like your subject line. Better than 'strings,' I'm afraid. Bill Hawkins -----Original Message----- From: Neil Schroeder Sent: Wednesday, June 24, 2015 4:55 PM ------ %< ----- (snip) Main question: if I want to isolate the quiet and noisy power supplies, or just supply them differently, can they share a common return? ------ %< ----- (snip) Lots of words. Thanks. NS _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
