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 ...

The key concepts you need to remember are: The analysis of an AC circuit mostly occurs at a single frequency with a sine wave input. Imaginary numbers aren’t imaginary.

This Design Idea presents a simple circuit that solves this problem (Figure 1). It visually and audibly indicates ac-mains-fuse failure; in most cases, audible indication is sufficient. The circuit ...

Although inductive and capacitive circuit elements are affected differently by AC and DC, resistive elements behave the same under both conditions. AC circuit analysis methods are more involved than ...

Alternating current (ac) or direct current (dc) circuits are capable of carrying very different currents, as illustrated by the ratings on the switch in Figure 1.