Hi All, It's time for another short tech article.... Many of us in in the technical community know that crossing a path over a break in the ground/power planes on a board can have undesirable effects. One effect sometimes overlooked is excessive crosstalk that occurs between paths crossing the break. December's Technical Tidbit on my site at http://emcesd.com titled "Crossing Ground Plane Breaks, A Source of Crosstalk" presents measured data that shows the crosstalk, even that due to a short break in a ground plane, can be signficant. There is lots of stuff in the middle, but if you page down to the bottom of the page you will see the link to the article in the form of a picture of a circuit board with a ground slit. There is also a listing of my upcoming seminars in January near the top of the page. Doug -- ------------------------------------------------------- ___ _ Doug Smith \ / ) P.O. Box 1457 ========= Los Gatos, CA 95031-1457 _ / \ / \ _ TEL/FAX: 408-356-4186/358-3799 / /\ \ ] / /\ \ Mobile: 408-858-4528 | q-----( ) | o | Email: doug@xxxxxxxxxx \ _ / ] \ _ / Website: http://www.dsmith.org ------------------------------------------------------- ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu