In an earlier post, the expression “feed forward” was discussed with respect to a control function used in some switch-mode power supplies. However, the term has other meanings as well. We are now ...

When we think about signals and systems, we often do so with an emphasis on creating and transmitting signals with specific characteristics. That is, we want the signal to have some desired amplitude, ...

Editor's note: This article was first featured in the February 2003 issue of EC&M. It has been updated to reflect newer power quality instruments and updated standards. Today, many facilities have ...