Older table-top AC-DC radios used a classic line-up of tubes. Think 12SA7, 12SK7,12SQ7, 35Z5GT, and 50L6GT. As I grew into my teens, I got interested in how these radios worked and soon discovered ...

As a service to our readers, we're providing the LTspice files used in Dr. Dyer's article on simulation of the 12AX7 and the K2-W vacuum-tube op amp. 1. The model for the K2-W is established as a ...

A French startup at CES isn't where I expected to find one of the most interesting cordless vacuums I've ever seen.

THE student with a good knowledge of general physics will find this volume very helpful in studying radio-frequency phenomena. Modern thermionic tubes have so many important applications in physics ...

If you haven't had the pleasure of being wowed by a wet-dry vacuum's ability to vacuum and mop floors (and some rugs) simultaneously, let me tell you, these hard floor cleaners have quickly become one ...

No matter the age of your vehicle, its interior is bound to accumulate dirt and dust over time, degrading its appearance and possibly leading to hard-to-remove stains in carpets and upholstery.

Dog and cat owners know that pet hair shows no mercy. It somehow ends up in every corner of your home and covers the floor, furniture and even your clothing. To ensure you’re always on the offensive ...

ZDNET experts put every product through rigorous testing and research to curate the best options for you. If you buy through our links, we may earn a commission. Learn Our Process 'ZDNET Recommends': ...

When Apple released iOS 18.4 to everyone earlier this year, it came with a big upgrade to the Home app. Users can now add robot vacuums to HomeKit for the first time thanks to the Matter smart home ...

Woodworking projects can generate a lot of sawdust, which is not only difficult to clean up, but according to OSHA, it’s potentially harmful to your respiratory health. A dedicated dust collection ...