AI Data Centers in Space: Bonkers or Visionary?

Artificial satellites have been on my mind a lot recently. Actually, I’ve been cogitating and ruminating on all sorts of things that are whizzing around over our heads, including satellites, space telescopes, and space debris. But let’s kick off with satellites, which themselves pretty much kicked everything else off.

These include communications, navigation, weather, Earth observation, scientific, military, … Read More → "AI Data Centers in Space: Bonkers or Visionary?"

A Tale of Two Multimeters – Part 2: The Keithley 179 DMM and a journey to Aladdin’s Cave of Wonders

Shortly after repairing my Keithley 179 digital multimeter (see “The Case of One Dead Digital Multimeter”), the meter failed yet again. After turning it on, all the LED display would do was cycle on and off at a slow 1Hz rate while displaying random readings. A suspiciously loud buzz emanated … Read More → "A Tale of Two Multimeters – Part 2: The Keithley 179 DMM and a journey to Aladdin’s Cave of Wonders"

The Future of RF: Digital Twins and the Elimination of System Integration Risks

In this week’s podcast, we’re diving deep into the world of RF system design! My guest is Giorgia Zucchelli from MathWorks. Giorgia and I explore what an RF digital twin is, how it revolutionizes the design and validation workflow, and how AI is playing a critical role in its development. 

 

Read More → "The Future of RF: Digital Twins and the Elimination of System Integration Risks"

A Tale of Two Multimeters – Part 1: Fixing rubber buttons on the Keithley 197 DMM

I have been building up my home lab these past few years, and I decided that I needed a better multimeter. My original Fluke 77 handheld digital multimeter (DMM) has served me well for more than 40 years, but I wanted more resolution than its 3½ digits. A few years back in a fit of GAS (gear acquisition syndrome), I purchased a 20,000-count Surpeer AV4 multimeter from Amazon for $40. Alas, the Surpeer … Read More → "A Tale of Two Multimeters – Part 1: Fixing rubber buttons on the Keithley 197 DMM"

May 12, 2026
May 11, 2026
May 8, 2026
May 7, 2026
May 6, 2026
May 5, 2026
May 4, 2026
May 1, 2026
April 30, 2026
April 29, 2026
April 28, 2026

featured chalk talk

Analog Output, Isolated Current, & Voltage Sensing Using Isolation Amplifiers
Sponsored by Mouser Electronics and Vishay
In this episode of Chalk Talk, Simon Goodwin from Vishay and Amelia Dalton chat about analog output, and isolated current and voltage sensing using isolation amplifiers. Simon and Amelia also explore the fundamental principles of current and voltage sensing and the variety of voltage and current sensing solutions offered by Vishay that can get your next design up and running in no time.
Apr 27, 2026
14,364 views

featured paper

Quickly and accurately identify inter-domain leakage issues in IC designs

Sponsored by Siemens Digital Industries Software

Power domain leakage is a major IC reliability issue, often missed by traditional tools. This white paper describes challenges of identifying leakage, types of false results, and presents Siemens EDA’s Insight Analyzer. The tool proactively finds true leakage paths, filters out false positives, and helps circuit designers quickly fix risks—enabling more robust, reliable chip designs. With detailed, context-aware analysis, designers save time and improve silicon quality.

Click to read more

discussion
Posted on May 12 at 9:27am by Max Maxfield
Hi Ron -- good question -- I'll ask Euwyn to respond -- in the meantime, I have a couple of thoughts. One is the FDSOI process used in Lattice FPGAs (see Handling Radiation in SRAM-Based FPGAs https://www.eejournal.com/article/handling-radiation-in-sram-based-fpgas-part-2/) and the other is the recent article I ...
Posted on May 12 at 7:32am by Ron Cline
In geosynchronous orbit, outside the protection of the earth's magnetic field, hard SEL upsets will be a bigger challenge, especially with the large inference chips that are contemplated. Will fault detectors be able to power down the system before thermal runaway? That will be a big engineering challenge, as process ...
Posted on May 5 at 12:31pm by Max Maxfield
We can but pity those who don the undergarments of authority and stride the corridors of power, thinking lofty thoughts beyond the ken of mortal man.
Posted on May 5 at 8:01am by MD
Executives—is there anything they can't do? I mean, *I* could never come up with the idea of using a pencil as a size reference in *days*, let alone mere hours. No wonder they get the big bucks.
Posted on May 4 at 12:12pm by Steven Leibson
Contemporary handheld multimeters like the Fluke 101 now use pads on the pcb for their mode switches. Vendors do not use real rotary switches like they did back in the 1970s and 1980s. You are correct that this is a wear and failure point for meters from all vendors. Even genuine ...
Posted on May 4 at 9:00am by uwe
Not visible on the picture but from the front I guess that the mode switch contacts are printed on the pcb. This gives a point of failure, because the typical pcb surface with some tin on top of copper traces is only good for a limited number of operations. So ...
Posted on May 1 at 3:51pm by JohnSanders
I don't see that this topic is about AI solving anything - your computer model was used to provide a simulation model which then was some how mapped onto a classification process (machine learning) . You could perhaps use principle component analysis to classify (but only if you had samples that ...
Posted on Apr 29 at 8:04am by Max Maxfield
You offer a compelling argument. I think this is something we could actually achieve within the next 100 years or so. Still and all, assuming we ever evolve into a Type 1-ish civilization, I would love to see terraformed versions of Venus and Mars (using our hyperspace transport gates to move ...
Posted on Apr 29 at 7:53am by Max Maxfield
I just went to Amazon to order this book (https://www.amazon.com/dp/1560916095), but it looks like it's out of print, and a secondhand copy costs $499 -- dang, now I REALLY want to read it!!!
Posted on Apr 28 at 5:04pm by Keith Lofstrom
Mars is cold, poisonous, and difficult to leave after arrival. No breathable atmosphere. No radiation shielding. Gravity is 38% of Earth's; healthwise, like living in spacesuit a recliner chair. No. NO! Pulp your pulp sci-fi and think different. The Martian moon Phobos is almost a "launch to the Moon and back" ...
Subscribe Now

featured blogs
May 6, 2026
Hollywood has struck gold with The Lord of the Rings and Dune'”so which sci-fi and fantasy books should filmmakers tackle next?...
What’s Driving Zephyr’s Momentum
In this episode of Chalk Talk, Brendon Slade from NXP and Amelia Dalton explore what Zephyr makes unique, how it compares to other RTOS options, and how its design philosophy enables developers to scale from simple prototypes to production-ready systems with confidence.
May 4, 2026
8,272 views
Designing Scalable IoT Mesh Networks with Digi XBee® for Wi-SUN
Sponsored by Mouser Electronics and Digi and Silicon Labs
In this episode of Chalk Talk, Quinn Jones from Digi, Chad Steider from Silicon Labs and Amelia Dalton explore how Wi-SUN Micro-Mesh can reduce cost and simplify deployment for your next IoT mesh network. They also investigate the benefits that Digi XBee solutions bring to these types of networks and how you can jump start your next IoT mesh network design with Silicon Labs and Digi.
May 4, 2026
8,347 views
GaN for Humanoid Robots
Sponsored by Mouser Electronics and Infineon
In this episode of Chalk Talk, Eric Persson and Amelia Dalton explore why power is the key driver for efficient and reliable robot movements and how GaN technologies can help motor control solutions be more compact, integrated and efficient. They also investigate the role of field-oriented control in humanoid robotic applications and why the choice of a GaN power transistor can make all the difference in your next humanoid robot project!
Apr 20, 2026
22,852 views