Hi, Take a look at http://www.dvanhorn.org/Micros/All/Bypass.php . David wrote a nice and easy paga about it. Some of his tips may be questioned by some, such as the thinner tracks from the main power track to the bypass capacitor but many people think it is the best way. It should clear your doubts. Best regards, Alexandre Guimaraes > Trying to learn how to use filter caps (which I believe > as called decoupling caps as well) on PCB's to keep > things running smoothly, and I expect this is a broad > subject, so was wondering if anyone has any useful web > links that could teach me a bit about it. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu