brucew Posted June 24, 2014 Share Posted June 24, 2014 I've been giving some attention to the dirty power in my house, and thinking about the cheap SMPS wall warts in various places: modem, wifi, router, powered USB hubs, wireless phones. Now it would be rather expensive to replace all these with linear PSU's, and the cheap linear PSU's for sale don't give statistics about Ripple & Noise, Noise/Line regulation, or Load Regulation. But at RS I can get pretty reasonable SMPS PSU's with Noise/Ripple under 1%, Line regulation of 1% or better, and Load Regulation of 3% (mostly Meanwell medical PSU's). Now I wouldn't use such SMPS to power my DAC, but I wonder if these would really help clean up the power in my house circuits... which are all connected to my audio system in some way. I assume the cheap SMPS supplies that came with the wifi, router, and wireless phones have Ripple/Noise much greater than 1%, though I don't know that I have the means to measure that. Thoughts? One way to test the potential improvement is to unplug all these from the wall over night and find what I hear the next day. Unplugged from the phone and internet for 20 hours... that's scary! Link to comment
4est Posted June 24, 2014 Share Posted June 24, 2014 You could try the old type of wall warts that use transformers. Forrest: Win10 i9 9900KS/GTX1060 HQPlayer4>Win10 NAA DSD>Pavel's DSC2.6>Bent Audio TAP> Parasound JC1>"Naked" Quad ESL63/Tannoy PS350B subs<100Hz Link to comment
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