Extend the LM358 op-amp family’s output voltage range by cascading the op-amp with a few simple, inexpensive components.

Using the TDA7052A audio amplifier to generate a five octave, linear in pitch voltage-controlled oscillator (VCO).

You’ve seen the headlines. Now let’s break them open. Sasha-Ann Simons connects you with the people behind the stories: experts, neighbors and newsmakers who shape the city we share. It’s news, ...

On Friday, June 6, 2025, Quinn’s Auction Galleries will present a beautifully curated sale of nearly 500 lots that reflect the enduring elegance and cross-cultural taste of Washington, DC’s most ...

I've been a contributing editor for PCMag since 2011. Before that, I was PCMag's lead audio analyst from 2006 to 2011. Even though I'm a freelancer now, PCMag has been my home for well over a decade, ...