Author’s note: This article shows how to derive circuit gain equations via a signal flow graph. With practice you may be able to write a gain equation by locating signal paths and loops in the ...

The first few articles in this series were originally published in a different form at www.en-genius.net as the July – September 2012 monthly technotes. Then En-Genius ceased operations in October ...

If you have ever read advanced textbooks or papers about electronics, you may have been surprised to see the use of complex numbers used in the analysis of AC circuits. A complex number has two parts: ...

The distinction between a branch circuit and a feeder can be a source of confusion for many Code users. The first step in eliminating this confusion is to understand that the NEC defines a branch ...