NewBuyer;219207 Wrote: > In fact, PS Audio advertised an item called a 'HumBuster' > (http://www.psaudio.com/products/upchbmoreinfo.asp) that was > specifically designed to remove the DC on an AC line.
I find it hard to trust the reports of a company that states > Because transformers work when the coil magnets switch poles from North > to South and back again, 60 times a second, DC forces the input coil to > always sit in one direction and this makes the transformer a little > crazy so it hums. Harmonics on the mains, typically inserted by nonlinear loads such as phase controlled lamp dimmers, switch-mode power supplies and some linear PSU configurations will make transformer laminations buzz. DC on the mains will be forced through the very low DC resistance on the offending transformers and other devices on that circuit, including the substation transformer. This tends to be very low, less than an ohm for even a small transformer. Sustaining a significant amount of DC on your AC line in the face of these extremely low impedances shunting the line isn't possible without putting a massive amount of energy into it. Which will be turned into heat by your transformers, and wispy curls of smoke -- ermine ------------------------------------------------------------------------ ermine's Profile: http://forums.slimdevices.com/member.php?userid=12613 View this thread: http://forums.slimdevices.com/showthread.php?t=30856 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
