Hi Everyone, I just finished up my technical article for June. It includes some very interesting data on four layer boards.
Technical Tidbit - June 2010 Routing Signals Between PCB Layers - Part Three, Interplane Voltage (Frequency Domain Measurement) Abstract: Four layer PCBs are used in a wide variety of applications. However, usually it is necessary for some signal paths to be routed on both the top and bottom signal layers to achieve required routing density. Using a model of a four layer PCB with ground and power planes, data is presented that shows routing a signal on both signal layers can cause significant signal voltage to be developed between the planes unless a simple design rule is observed. The article is at: http://emcesd.com/tt2010/tt060310.htm Next week I hope to put up a 15 minute video of the experiment on CircuitAdvisor.com although I have a lot of travel over the next two weeks so it might be delayed a bit. 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: [email protected] \ _ / ] \ _ / Website: http://www.dsmith.org - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
