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In Reply to: How many Auricaps to put in my components? posted by shuang on February 06, 2004 at 20:58:42:
I belive the second cap is used in a bypass configuration. I've read that .1 uf values are used to bypass a larger value cap. The larger ones are generally around 2uf.
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Follow Ups:
I've commonly read about placing two 0.47 uF Auricaps in parallel across the hot and neutral. The caps sum in parallel to .94 uF.Don't worry about what the other guy said. He doesn't know what he's talking about. Hopefully your Auricaps are rated at 600 V, which is fine for our single-phase 120 V power. The 0.47 uF cap presents a high impedance to anything low frequency, like 60 Hz. It only shunts high frequency to neutral (i.e. high frequency noise).
I just ordered two pairs for use in my CD transport and DAC. I would recommend you pair them up as well. The filtering frequency is determined by the capacitance and if C is too low, then your filtering frequency goes up. That allows a whole bunch of lower frequency noise to go through.
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Don't know what I'm talking about? Since when is the power to your home limited to 120V???I spent years monitoring the AC voltage for million-dollar+ computer systems to recommend proper ways to clean power. Seen lots of 1000V+ spikes come across the line (and they were a far cry faster than 60Hz). How's your Auricap gonna deal with that??
U B funny. Learn something about AC power before you shoot your mouth off. X and Y rated caps are the only things to be slapping on your mains lines. Period. Anyone doing anything else needs to understand that it is NOT safe practice before they proceed. If you understand the risks and are willing to roll the dice, go for it. But to recommend to those on the board that they attempt this without informing them of the hazards is doing a them serious disservice.
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Really?I accept it was my bad to phrase things as undiplomatically as I did. I appologize for hurting your feelings, EchoWars, and I don't doubt your observations in industry but tell me whether you were running single-phase power off a residential grid while monitoring these > 1000 V spikes? Tell me your spikes weren't the result of extreme high power computer applications where you weren't pushing many billions of flip flops on and off every cycle in a massively parallel processing matrix of CPUs and even more memory sticks at many GHz. Were these supercomputer mainframes by any chance? Tell me these voltage spikes weren't the artifact of simultaneous switching noise and ground bounce from waaay too few overly inductive power traces feeding waaaay too many super-high density CPU packages with several millimeters of inductive wirebonds that create more than 15 - 20 A current surges at each rising clock edge when the billions upon billions of flips flops simultaneously latch? Tell me your extremely polluted industrial digital power environment is completely identical to typical residential power draw? I work in high tech as well . . . as a RF microwave and millimeter wave modules and packaging designer for broadband telco, wireless, and military applications so you'd better be careful how you proceed to shoot your own mouth.
Until you can show me the test environment within which you measured these > 1000 V spikes, I disagree with your opinion within a residential environment - which is the only thing that matters here. Take a look inside any home electronics power supply and count the number of +1000 V rated caps. I don't see any. I think the Auricap is fine for residential use as does the cap designer - he uses them the same way in his stereo equipment.
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