The goal of this project is to make a small LISN (Line Impedance Stabilization Network) to "see" with spectrum analyser or oscilloscope with FFT the noise on power line.
Only a few people like EMC compatibility issues ... In most common case, i (and, i think a lot of electronic hobbyist) don't think about emc questions when prototyping. Last week, i've got a lot of noise problems on a (quite) low frequency oscillator. For three days, i've observed reasonable performance the mornings and very bad stability in the evenings. The offender was an energy saving lamp ..!
Maybe other people here have lamps who loves jokes ... :)