> In my experiance it depends very much on the type of inductor & its losses. > For air cored RF types, a known Cap and a dip meter or some other form of > resonance test seemd to work best. This works fine, but note that the accuracy is only as good as the cap. Accurate resistors are much more obtainable than accurate caps. If accuracy is an issue, then use an LR method instead of an LC method. ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu