Such a solver is working on a truly 3-dimensional description of the structure under observation. In order to solve a given structure, that structure needs to be 'meshed', which means it is divided ...

In last month's “Code Basics” article, starting on page 56 of the September issue, we spent most of our time discussing Class 1 circuits. Now, it's time to switch gears and focus on Class 2 and 3.

(Editor's Note: There are links to the previous parts of this series at the end, below the author's biography.) For all signal-chain devices to operate properly, each requires a stable-voltage power ...

Hybrid relays combine a mechanical switch with a solid-state switch, and they are set up in parallel to control a single load ...

Whether you’re a book-learned engineer looking to finally get your hands on building circuits, or a maker, hobbyist, or student, these instructional videos get you started. The basic metallurgy of ...

The first requirement is that the branch circuits must comply with Art. 210, which covers branch circuits [225.7(A).] What about installing lighting equipment ...