Med Dyer, Jabra Corp, San Diego, CAGenerating a square wave at a particular frequency is fairly simple. Many techniques for doing so exist, using counters, flip-flops, and–everyone's favorite–the ...

The test and calibration of audio-frequency circuits and systems often require a sine wave with an accurate amplitude and frequency and a low total harmonic distortion (THD). Some test applications ...

The figure shows a schematic for an oscillator amplitude-control servo system. The circuit creates a closed-loop system that supplies a fixed and adjustable peak-to-peak amplitude ac signal centered ...

Although quite a few direct digital synthesis (DDS) ICs can generate high-frequency sine waves, their complexity excludes them from many designs. However, designers can use simple high-frequency CMOS ...

Some volcanic eruptions have been accurately predicted by looking at the complex sine waves created by small earthquakes within volcanoes. But what is a complex sine wave? Find out in this activity.

The seismic signals from volcanoes are complex waves that result from multiple single waves that occur simultaneously. To help students understand how a complex wave is formed, tell them that in this ...