AM radio in cars presents an engineering dilemma
Design engineers are caught between a push to drop AM radios from cars and the radio industry’s pushback. It hasn’t received much attention among all the other news (mostly bad, some good), but there’s...
View ArticleZonal automotive power distribution can dramatically improve efficiency,...
If something can’t go on, it won’t; supplying the automobile’s voracious electrical demands from a 12-V battery is an example of this reality. Today’s cars — whether based on the traditional internal...
View ArticleZonal automotive power distribution can dramatically improve efficiency,...
If something can’t go on, it won’t; supplying the automobile’s voracious electrical demands from a 12-V battery is an example of this reality. Topology changes affect the battery source Due to the 12-V...
View ArticleZonal automotive power distribution can dramatically improve efficiency,...
If something can’t go on, it won’t; supplying the automobile’s voracious electrical demands from a 12-V battery is an example of this reality. Under the zonal architecture, many legacy loads will still...
View ArticleWhen “it’s just engineering” leads to “ordering up” progress
It’s easy to imply “it’s easy” — when you don’t have to make it happen. Engineers of all disciplines have an image problem. It’s not that we are often regarded as “geeks” or “nerds” or that we are just...
View ArticleThe why and how of 4-wire Kelvin sensing: part 1
Early electricity investigators cleverly solved the challenge of measuring milliohm resistances or microvolt changes in voltage across a resistor over 150 years ago. Engineers, scientists, and...
View ArticleThe why and how of 4-wire Kelvin sensing: part 2
Early electricity investigators cleverly solved the challenge of measuring milliohm resistances or microvolt changes in voltage across a resistor over 150 years ago. This part continues the exploration...
View ArticleIs research fraud becoming an issue for engineers?
There’s little question that research-paper fraud is increasing dramatically, but by how much? I recently saw an article that had me worried at many levels. This Wall Street Journal article [1] (behind...
View ArticleAutomotive airflow analysis reveals virtues & limits of sensors, models, and...
Design verification requires both sophisticated models and the simulation they offer, as well as real-world validation of their results. Sensors and sensing for real-world physical parameters form a...
View ArticleThe why and how of matched resistors: part 1
Paired resistors with low-temperature drift are critical to many precision analog circuits. Achieving high performance, precision, and consistency in an analog signal chain requires attention to subtle...
View ArticleThe why and how of matched resistors: part 2
Paired resistors with low-temperature drift are critical to many precision analog circuits. The previous part discussed the need and “why” for matched resistors, as well as errors due to tolerance and...
View ArticleFAQ on outgassing: sources, implications, and solutions: part 1
This materials- and physics-based phenomenon is a non-issue for many designers but a major one for others. If you have ever been in a new car with its distinctive smell of plastic, leather, carpet, and...
View ArticleFAQ on outgassing: sources, implications, and solutions: part 2
This materials- and physics-based phenomenon is a non-issue for many designers but a major one for others. This second part continues the exploration of outgassing and its implications. See here for...
View ArticleCelebrating successful debugging and repair out beyond our solar system
The team that recently diagnosed and patched the Voyager 1 spacecraft at 15 billion miles from Earth should be celebrities. I’ve always maintained that debugging electronic circuits and...
View ArticleFAQ on using electricity to generate heat, part 1
Electrical energy is often used to generate heat via a variety of basic principles of physics. Every engineer knows about heat, an omnipresent companion to nearly all electrical, mechanical, and...
View ArticleFAQ on using electricity to generate heat, part 2
Electrical energy is often used to generate heat via a variety of basic principles of physics. Part 1 looked at the three ways electrical energy and power are used to create heat, using resistive,...
View ArticleWhat is “twin-lead” transmission line — and what happened to it?
Twin-lead line was once the dominant transmission medium for consumer products such as TVs; it has been largely, but not entirely, made obsolete by coaxial cable. When engineers need to make a wired RF...
View ArticleDoes 32 kHz or 3.58 MHz mean anything to you? Part 1
These two frequencies played major roles in electronics; one is still very viable, while the other is completely obsolete. Engineers are surrounded by countless standard frequencies, many of which are...
View ArticleDoes 32 kHz or 3.58 MHz mean anything to you? part 2
These two frequencies played major roles in electronics; one is still viable, while the other is entirely obsolete. Find Part 1 here. Color TV was developed in the 1950s and 1960s, largely by Radio...
View ArticleWooden CubeSat: PR stunt or worthy investigation?
It’s literally out-of-the-box thinking with a CubeSat whose enclosure is made of wood, not metal. I recently came across a technical news story that I initially assumed was either a clever prank or a...
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