Resistance standards are incredibly useful, but like so many precision references they require regular calibration, ...

We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are under real engine conditions.

I never thought that a $12 accessory could rival tools that cost much more. But this USB-C power meter delivers in profound ways.

Portable power stations are more powerful and cost effective than ever before. And, thanks to advances in lithium-ion battery ...

A DIY wall-mounted sound visualizer plots ambient audio as a smooth waveform on an RGB LED matrix, combining a Pico-class ...

BUTUAN CITY (PIA) — The Department of Health-Center for Health Development (DOH-CHD) Caraga has intensified its call for pregnant mothers to undergo human immunodeficiency virus (HIV) testing before ...

The Cornwell Quality Tools CBPDM150 True RMS Smart Digital Multimeter with Color LCD offers smart meter capability, allowing it to automatically detect if the user is measuring voltage (AC/DC), ...

GYEONGJU, South Korea — President Donald Trump said Wednesday he had instructed the Defense Department to “immediately” start testing nuclear weapons "on an equal basis" with other nations. “Because ...

To make the most of EV ownership, you need high-voltage charging equipment at home. We tested some of the top home EV ...