How to build your own air quality meter with a Raspberry Pi and CO2 sensor

A reliable indicator of the air quality in offices, classrooms, or living rooms is the CO2 content. In fresh air, the ...
Wall Street Journal

How the Inflation Rate Is Measured: 477 Government Workers at Grocery Stores

READING, Pa.—Emily Mascitis has one of the most important jobs you never knew existed. As Americans’ monthly bills climb at the fastest rate in four decades, it is Ms. Mascitis’s work that confirms ...
Forbes

It's Time To Change How Success Is Measured

Al Kingsley is CEO of NetSupport, chair of a multi-academy trust in the U.K., tech writer, speaker and author of "My Secret #EdTech Diary." Today's education systems are intended and regarded as ...
Electronic Design

Measuring Input Current of a Buck or Flyback Converter

For the PDF version of this article, click here. When designing converters, it is often desirable to measure the dc current coming into the converter. This is particularly true when batteries are ...
Electronic Design

How to Design an Optimal Electronic Load for High-Current, Low-Voltage Power Supplies (Part 2)

The power transistor must be chosen to provide fast response while also withstanding high power dissipation. Several electrical and thermal characteristics must be considered: 1. An array of N current ...