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Automotive sensor power supply without a switching pre-regulator
An automotive sensor power supply appears deceptively simple to design but in fact poses many formidable challenges. The regulated output voltage is required to be 5V or 3.3V, depending on the logic...
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SFP: The multimode module autopsy
A dissimilar laser technology versus the single-mode sibling trades off operating range for cost, at least theoretically. But it’s still faster than the LED-based predecessor. Last month’s premiere...
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Fiber optic gyroscopes: Elegant engineering of modern inertial navigation
Spin a heavy wheel or vibrate a piece of silicon, and you get a traditional gyroscope. Spin two beams of light inside a coil of fiber, however, and you get a masterclass in relativistic physics turning...
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Automotive demands driving passive components to extreme performance
The increased sophistication and performance expectation of the automotive drive train, especially in electric vehicles (EVs) and to a lesser extent in hybrid and even internal combustion engine (ICE)...
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Apollo 11 corner reflector
Hard science data is typically no barrier to enduring belief for the conspiracy theorist. Nevertheless, this engineer tries, tries again. “As I went to Bonner, I met a pig without a wig, upon my word...
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Not all diodes use electrons
Sometimes thinking like a geek pays off. Especially when you’re dealing with overheated Judge Judy fanatics. A recurring problem at the transmitter site of the television station I worked at was the...
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NAS upgrades: Proprietary lockouts and surmounts
A speedier LAN “freeway” is of no benefit if “vehicles” on it are still molasses slow. Fortunately, this engineer’s curiosity is matched by upgrades both available used and already in inventory. As...
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Integrated FEMs ease 2.4-GHz RF design
pSemi offers the PE566212 and PE566213 2.4-GHz SOI front-end modules (FEMs) for Bluetooth, Zigbee, and Thread applications. Each module integrates a power amplifier, low-noise amplifier, and RF switch...
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Diamond spreader tames AI GPU hotspots
A liquid-cooling cold plate, Frore’s LiquidJet Diamond integrates a diamond heat spreader to cool hotspots in high-power-density AI GPUs. Its 3D, short-loop, multistage cooling architecture can be...
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Systems reduce latency in edge AI automation
Aetina’s AIE-KT78/68 edge AI systems are powered by NVIDIA Jetson Thor platforms featuring the Blackwell GPU architecture for deterministic industrial control. Targeting collaborative robots (cobots),...
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100-V GaN FETs lower switching FOM
Renesas Electronics has launched its first family of 100-V enhancement-mode (E-mode) discrete GaN power transistors. The company says the RTP100E005G1FL, RTP100E2P6G1FL, RTP100E1P8G1FL-DSC and...
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Updated rack enclosures offer flexible design options
METCASE has redesigned its COMBIMET 19-in. rack-mount enclosures to provide greater rigidity and more usable panel space. The aluminum cases are suitable for networking and communications equipment,...
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Nifty nulling of non-negligible dpot “scale” errors
This silly simple circuit cancels out potentially serious digital potentiometer zero- and full-scale errors. Everybody (well, most everybody) knows that digipots tend to be more accurate when used as...
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Apple heads Home: Distributed identity validation, and how much does Matter...
Apple branding is front and center in the company’s resurrected smart home “push”. Although broader ecosystem compatibility is also feasible, you’d never know it from the messaging. Within my 2024 CES...
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5G chips and modules power phones, wearables, IoT, and vehicles
Rising 5G adoption across industrial IoT, connected automotive, and smartphones is driving demand for application-specific 5G chips and modules. Chipmakers are increasingly targeting 5G-Advanced,...
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Measure the AC mains frequency with an ordinary counter
Knowing the mains frequency is important in many industries; the speeds of AC motors, for example, are dependent on it. The motor speed= (120*F)/P, where F is the mains frequency and P is the number of...
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AI silicon tapeout: Can it beat a benchmark engineers trust?
AI-assisted chip engineering is increasingly capable of reaching meaningful design milestones. But reaching GDS does not establish that the resulting engineering outcome is better. If AI agents are...
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The secret life of ferrite bead: More than just a lump on a wire
They look like simple, passive lumps of material molded onto a cable or dropped onto a PCB but looks can be highly deceiving. To the uninitiated, a ferrite bead is just a mysterious black cylinder...
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TP-Link’s Tapo P110M smart plug: Matter and energy monitoring matter
A seemingly newer device reverts to a legacy processor architecture, in comparison to one certified earlier that same year. Does it matter? And was it due to Matter? This is the end Beautiful friend...
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Measurement bandwidth
Designers and test engineers should carefully consider an application’s bandwidth requirements before selecting an instrument. Engineers want accurate measurements over as broad a frequency range as...
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