Home Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

RE: Xfinity X1 CATV box DC umbilical project

While a nominally isolated or separate filter bank of a power line conditioner can help to mitigate switch-mode power supply noise from polluting the AC delivery to other gear within a system, radiated noise (airborne noise) can still be an issue regardless of effective AC noise filtering. If there were no other choice but to use a switch-mode power supply for an audio application, I would likely use a true isolation transformer for the purpose rather than ordinary AC power line filtering.


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