How to electrocute yourself in a few easy steps Here’s a fun project: Pop open an old microwave oven and scavenge the high-voltage transformer powering the cavity magnetron vacuum tube. Then use it to make yourself a Lichtenberg generator. But be sure there’s someone nearby to call an ambulance. Lichtenberg generators are used to create…
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August 2019 Special Edition: Autonomous & Connected Vehicles
V2Clueless – Next generation of connected apps If you had been watching the Saturday Night Live TV show in mid January of 2012, you would have seen a skit called the Headz Up App. It was an ad for a fictional app aimed at people so distracted by texting on their smartphone that they were…
June 2019 Special Edition: Test & Measurement Handbook
Will 5G be lethal? Peruse a certain kind of website these days and you’ll find warnings about the lethality of RF transmissions in the frequency ranges slated for 5G networks. One site quotes Devra Davis, director of the Board on Environmental Studies and Toxicology of the U.S. National Research Council, who warns that our sweat…
April 2016 Special Edition: Internet of Things Handbook
Everything you thought you knew about IoT security is wrong Listen to the advice being given for securing IoT devices and you are likely to be told that the level of security should be scaled to meet the probable threats. Internet-connected home thermostats, for example, should be designed to prevent compromise by hobbyists and serious…
Special Edition: Power Electronics Handbook 2019
Now or later? No time for time-of-use energy savings One of the big justifications for smart home electronics and internet-of-things pipedreams is a concept called time-of-use electricity billing. Long used for industrial concerns, the plan is to bring TOU billing to households, so they’ll be charged more for electricity they use during periods of peak…
November 2018 Special Edition: 2018 Power & Energy Efficiency Handbook
Don’t let the LED blue light blues get you down TAKE A LOOK at some of the websites devoted to alternative medicine and you’ll likely come across headlines like, “The Dangers of LED & Blue Lights Will Blow Your Mind!” or, “LEDs: The Blue Light Risk,” or “Artificial lighting and the blue light hazard.” These…
August 2018 Special Edition: Autonomous & Connected Vehicles
Connecting the car is the easy part At the annual conference of the Society of Automotive Engineers, no small number of technical papers cover issues surrounding driver interactions with features on the car dashboard. Touchscreens in particular are a hot topic. You can find SAE papers with impressive-sounding titles such as, Touch Interactive Display Systems:…
June 2018 Special Edition: Test & Measurement Handbook
Will high test instrument costs keep the next Steve Wozniak out of the tech business? Back in the heyday of personal computing, it was possible to do state-of-the-art work without making a big investment in test equipment. To see what I mean, consider the development of the first 5.25-in. floppy disk drive for the Apple…
February 2018 Issue: Power Electronics Handbook
Hiring hint: Look for soft skills in young engineers Do schools teach young engineers the right skills? It is easy to find a lot of opinions on that subject from academics. It is more difficult to find assessments from experienced engineers who actually work with new grads. That’s why the comments of Richard Lukaszewski are…
November 2017 Digital Issue: Power & Energy Efficiency Handbook + more
The down side of free samples If you’ve had hassles trying to get component samples for a project, you can thank the efforts of a few enterprising students for making your life more complicated. Here’s a microcosm of what has happened with sample parts: The folks at Texas Instruments used to have a liberal policy…