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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: RE: Not Safe posted by Uncle Mike on August 12, 2016 at 06:18:51:
Safety concerns aside, the filtering approach achieved by putting massive shunt caps by themselves is not going to be that much compared with using a much smaller cap in a more optimal filter topology. An RC or CLC topology could allow reduction of the sizes of these multi hundred u farrad caps to only a few mics each at most and probably achieve even better noise filtering. I wouldn't necessarily recommend CLC's for less experienced amateurs due to the inrush current/ back emf over voltage problem that could break downstream semiconductors. RC's seem like they could be a very effective approach a careful amateur might safely have good success killing noise with, however.
Besides, best case scenario this type of filtering can only address differential mode noise. I'm not entirely convinced some common mode filtering along with all this diff mode filtering wouldn't go a long way for a lot of folks looking to quiet down the ac.
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