There comes a time in every electronic designer’s life when, whether they know it or not, they need an analog filter in their design. If you’re coming from a digital background, where everything is ...

In the last edition of Don’t Fear the Filter, we built up two examples of the simplest and most-used active filter of all time: the two-pole Sallen-Key lowpass. This time, we’re going to put two of ...

When you’re hot, sweaty and in the middle of a big adventure in the great outdoors, you want the best filtered water bottle you can get. Not only do these bottles help keep you safe, but the best ...

Staying hydrated should never fall to the bottom of your to-do list. Compared to plastic water bottles, water filter pitchers are a less wasteful way to drink clean H2O as well as save money. I spoke ...

Traveling isn't just about the destination. Carry On is our series devoted to how we get away in the digital age, from the choices we make to the experiences we share. UPDATE: Aug. 3, 2023, 5:00 a.m.

Water filters that come in pitcher form can only do so much. You should replace carbon filters every two months, and many don't filter out lead and plastics. Faucet filters and household systems can ...

Running your furnace, central air, or heat pump probably constitutes a big part of your utility bill. But it’s a small, often inexpensive part—the air filter—that keeps these heating and cooling ...

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Liam McCabe HEPA filtration ...

Your engine's oil filter has a critically important job. The soup-can-size filter at the bottom of your engine needs to remove contaminants and particles from your hard-working engine's oil so they ...

A good dishwasher can take a load of soiled, food-streaked dishes and leave them sparkling clean. So where do those little crumbs and food particles go? It comes down to a relatively small, ...

Most backyard observers want to see as much detail as possible in as many objects as possible. Yet those two goals often conflict and usually can’t be satisfied simultaneously. Seeing the most objects ...