Despite their similar names, histograms and spectrograms are totally different ways of displaying a signal or function in a digital storage oscilloscope (DSO). Both are useful in organizing and analyzing electrical waveforms, but the type of information that is displayed and the conclusions that may be drawn from them are worlds apart. Histograms and spectrograms […]
What’s new with Wi-Fi 6? Focus on high-efficiency
The first wide-spread home electrical appliance was the toaster, and 90% of homes today still have one.[i] Today, wireless connectivity to the internet is as ubiquitous as the electricity was a hundred years ago. Smartphones, tablets, wearables, laptops, televisions, Nest thermostats, Alexa, Google Home, Ring video doorbell sensors, surveillance cameras door locks, smart lighting, and […]
Motor field-oriented control, Part 1: Principles
Field-oriented control, also known as vector control, is a calculation-intensive algorithm for motor control which is now practical due to advances in ICs; it offers improved efficiency along with superior control of torque and other performance parameters. Motor control—and doing so accurately and efficiently—is a topic of great interest. Field-oriented control (FOC), sometimes called vector […]
Teardown: Rexing V1 dash cam
The Rexing V1 is a simple wedge-shaped dash camera that films in a 1080-line progressive scanning format. The lens is made of six glass layers and is fish-eyed to capture a 170° view of whatever it sees. There’s also a built-in vibration sensor, called a G-sensor in the promotional literature, that automatically locks any files […]
How to learn anything for free: Massive open online courses
Positions for someone with a Masters degree in Data Science are $300K and up, according to a friend of a friend of mine who works in Human Resources for a well-known company. The company’s data scientists, who work on algorithms to predict usage based on data collected from the product’s platforms, are continually lured away […]
Difference between synchronous and asynchronous (induction) motors
All rotary electric motors, ac and dc, operate because of the interaction of two magnetic fields. One is stationary and is (usually) associated with the motor’s outer enclosure. The other rotates and is associated with the motor’s spinning armature (also called its rotor). These two fields are created by interactions between magnetic fields. In a […]
Choosing PCB materials to optimize applications, Part II
Have you ever wondered which type of Printed Circuit Board (PCB) materials would be worth investing in to improve signal integrity? Would your high-frequency signaling work better with a tighter, more uniform weave in the core sheet of the PCB? What’s a high-frequency signal, anyway? When should you invest in a rigid, moisture-proof PCB? Properties […]
BGP hijacking: How the Internet is getting hacked and what you can do about it
By Rudy Ramos, Mouser Electronics Most of us are familiar with the tricks used by malicious hackers to steal passwords or intercept private data. When we click a link, or start a chat, or send an email, it’s second nature to quickly check URLs and addresses to make sure that our data is going where […]
Robots are getting in touch
by Rudy Ramos, Mouser Electronics Often overlooked is the value of a sense of touch in robotics development. Designers focus strongly on discrete features such as power, freedom of movement, and machine vision. However, tactile sensing complements all of these and helps make the most of them. Having a sense of touch also adds unique […]
The most read stories on EE World Online for 2018
Among the hundreds of articles we published last year, some rose even higher to the top in the context of reader views. We’ve included those here — just in case you missed them the first time around… Considering for improving 3D NAND performance, reliability, and yield Even as 3D NAND races toward maturity and becomes […]
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