5-7 turns... take a ferrite core ( they come in all shapes and sizes, the ones that look like a doughnut are the ones I use) and wrap the power cable tightly around the core 5-7 times (do not overlap the cable. Each turn must be against the ferrite). This makes an inductive coil with a section of the power cable. The ferrite in the center of the coil will remove most unwanted interference from the line.
These ferrite cores are relatively cheap and can be found at most electronics shops (Radio Shack etc.) A good link (but deals more with TV Interference) can be quite helpful with a number if interference problems. http://www.arrl.org/fcc/tvibook.html The link will cover a lot of topics so get a good cup of coffee. Best Regards, Doug -----Original Message----- From: Roland Roberts [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 11, 2003 4:13 PM To: [EMAIL PROTECTED] Subject: Re: Monitor Shakes.... -----BEGIN PGP SIGNED MESSAGE----- >>>>> "Doug" == Doug Johnson <[EMAIL PROTECTED]> writes: Doug> If you have a high voltage line over the house you may want Doug> to consider harnessing that energy by (aaaah, nevermind that Doug> thought is illegal anyway) Nah, this is NYC. I do have an above-ground cable behind the house, but most of the power and signal wires around here are all buried. I don't *think* there's anything under my house here in Brooklyn... [...use a ferrite core on the AC line, too...] Doug> (5-7 tightly wrapped turns around a medium size ferrite core Doug> will get rid of any signals on the power line you have Doug> coming through). 5--7 turns of what? Doug> As for the UPS, try running on the UPS and kicking the main Doug> breaker off in the house and see if it goes away. These are Doug> really fun to find. This is also on the to-do list. I just have to wait until the kids are asleep and have time to go around resetting all the clocks.... roland - -- PGP Key ID: 66 BC 3B CD Roland B. Roberts, PhD RL Enterprises [EMAIL PROTECTED] 6818 Madeline Court [EMAIL PROTECTED] Brooklyn, NY 11220 -----BEGIN PGP SIGNATURE----- Version: 2.6.3ia Charset: noconv Comment: Processed by Mailcrypt 3.5.4, an Emacs/PGP interface iQCVAwUBPklnV+oW38lmvDvNAQGQEgQAjhhe+wUeoIl0S/sK8Qq3KIJRjkNhlRGN iYaIBV9upG6cQ+o5P/x9usuMjRLKHtMhelVToENYIyCfjsc5MkjZ6fq61tngzhqz wvtzD3OAAsaW/Pf8UXfkCvAcQ11/w0tQ6VBYhZiIfcW149CmjHjVD5WBHIWh5OVo A+aT+FZU484= =VlfP -----END PGP SIGNATURE----- -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list
