Date: Fri, 3 May 2002 23:37:13 -0400 From: "Gennadiy Tsygan" <[EMAIL PROTECTED]> Subject: Re: [LIB] Interference suppression cores
Those are to prevent high frequency noise to escape the computer and use the power cable as an antenna to radiate in the air and interfere with nearby devices. That's the theory. In the real life, they don't do anything useful. I took the ugly thing off. My Libby is much faster because of it :) > Hi all! > > Is it just me or has anyone else noticed that electrical cables are, > nowadays, starting to grow 'tumors' resembling those on data cables? > > Of course, I'm referring to the ferrite suppression cores that are used on > data cables to get rid of high frequency spikes induced by EM interference. > I can see how they can be useful on data cables (high impedances at one or > both ends, small currents and voltages, etc.) but I can't seem to see the > point of them on power cables such as the power cable for the libby (by the > looks of things, the power cables coming with L50/70's don't have them but > they appear from the L100 onwards). > > Does anyone know if they actually make an awful lot of difference? I've > obtained a second 15V switchmode power supply which I'll be using on the > libby in case I leave the proper libby one at work or something ... of > course, its got no suppression core on it. I'm wondering if it might be > wise to put one on or if its a little pointless given the low impedances > involved ... > > > - Raymond ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
