Doug, On the web "http://www.eskimo.com/~ultra/tech.htm" there is a file called "Maintaining Clean Power" (size = 511969). It is a selfextracting HPLJ file. It is a very good discussion of the pros and cons of cap placement and why. If you don't have web access but do have ftp access it is "ftp.eskimo.com/u/u/ultra/notes/t007.exe". If you don't have access to an HP printer you can email a request to [log in to unmask] and they will mail you a hardcopy of the document. UltraCAD Design, Inc is a printed circuit board design service bureau. I have no connection with them other than my own use of their tech notes. DonW... ^^^^^^ [log in to unmask] "It's a damn poor mind that can |o o| voice: (512)251-2341 think of only one way to spell ---000-()-000---fax: (512)251-0498 a word." --Andrew Jackson