Years ago (early-mid 80s or thereabouts), I saw a design idea in one of the trade magazines (Electronics, EDN, Electronics Design, etc.) that described a circuit using a full wave bridge rectifier that was wired into an electrical outlet that effectively broke the connection between AC neutral and safety ground to an oscilloscope. The circuit "floated" the scope's chassis (otherwise connected to safety ground through the power cord) by one or two diode drops from the neutral connection. This arrangement broke the "ground loop" and provided effective common mode noise reduction while maintaining the scope chassis close to safety ground in case of problem.
Does anyone remember this article, or have a copy of it? I've tried to remember the hookup, but
just can't seem to get it right.
Thanks,
Dave M
Does anyone remember this article, or have a copy of it? I've tried to remember the hookup, but
just can't seem to get it right.
Thanks,
Dave M