Variable capacitors may be useful, but the air gap that provides their capacitance is their greatest weakness. Rather than ...

If you'd rather not be tethered by a power cord while cleaning, the best cordless vacuums deliver top-tier suction power and cord-free convenience. Cordless stick vacuums are also lightweight and easy ...

Get our weekly Home and Garden email for tips, and interior inspiration Modern handheld vacuums are small, lightweight and far more powerful than you might expect, with improved battery life and ...