28/06/2017-11:08:46
RE: ceci n'est pas un Kaneda...
Bonjour Jean Marc
je pense à cela:
2. Switchmode supply noise and any high frequency noise on the mains now flows in the shield of the interconnect. This is not really an earth loop as such, and the result is more likely to be a harsh (grating) hissing sound. It is quite distinctly different from normal thermal noise, and is also more intrusive.
It might be possible to reduce this noise by installing a heavy earth strap that joins each chassis. Strictly speaking, this may be completely illegal, but the rules for double insulated appliances in many countries are often stupid, and fail to address reality.
Est-il possible de faire des mesures? car sans mesure il est difficile de trouver une solution quand des points qui devraient se trouver au même potentiel ne le sont pas.
je pense à cela:
2. Switchmode supply noise and any high frequency noise on the mains now flows in the shield of the interconnect. This is not really an earth loop as such, and the result is more likely to be a harsh (grating) hissing sound. It is quite distinctly different from normal thermal noise, and is also more intrusive.
It might be possible to reduce this noise by installing a heavy earth strap that joins each chassis. Strictly speaking, this may be completely illegal, but the rules for double insulated appliances in many countries are often stupid, and fail to address reality.
Est-il possible de faire des mesures? car sans mesure il est difficile de trouver une solution quand des points qui devraient se trouver au même potentiel ne le sont pas.
Quaerendo invenietis (J.S. Bach)