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Announced today, the new solution is said to introduce levels of compute scalability that extend beyond the physical limits of a single facility.

Intelligent power and sensing technology firm onsemi of Scottsdale, AZ, USA says that its EliteSiC M3e silicon carbide (SiC) technology is powering an 800V drive platform featured in select YU7 electric sport utility vehicle (SUV) models made by China-based Xiaomi. The EliteSiC M3e platform features what is claimed to be superior performance and efficiency, enabling automakers to design smaller, lighter and more robust traction systems for electric vehicles (EV)...

Me and my friend made this pcb that adds 2 bit with 2 bits and gives the result with 3 leds! It's the first pcb we design :) submitted by /u/Fars29 [link] [comments]

A few months back, I came across an LED-based desk lamp queued up to go out to the trash. When I asked my wife about it, she said (or at least my recollection is that she said) that it had gone dim, so she’d replaced it with another one. But the device didn’t include any sort of “dimmer” functionality, and I wasn’t (at the time, at least) aware that LED lighting’s inherent intensity could fade over time, only that it would inevitably flat-out fail at some point.

My curiosity sufficiently piqued, especially since I’d intercepted it on the way to the landfill anyway, I decided to take it apart first. It’s Hampton Bay’s 15.5 in. Black Indoor LED Desk Lamp, originally sold by Home Depot and currently “out of stock” both in-store and online; I assume it’s no longer available for purchase. Here are some stock shots of what it looks like, to start:

See: no dimmer. Just a simple on/off toggle:

I don’t remember when we bought it or what we paid for it; it had previously resided on my wife’s sewing table. The Internet Archive has four “snapshots” of the page, ranging from the end of June 2020, when it was apparently on sale for $14.71 versus the $29.97 MSRP (I hope we snagged it then!), through early December of last year. My wife took up sewing during the COVID-19 lockdown, so a 2020-era acquisition sounds about right.

Here’s what it looks like in “action” (if you can call it that) in my furnace room, striving (and effectively failing) to differentiate its “augmentation” of the baseline overhead lighting:

Turn off the room light, and the lamp’s standalone luminary capabilities still aren’t impressive:

And here’s a close-up of the light source in “action”, if you can call it that, in my office:

Scan through the reviews on the product page and, unless I overlooked something, you won’t find anyone complaining that it’s not bright enough. Several of the positive reviews go so far as to specifically note that it’s very bright. And ironically, one of the (few) negative ones indicates that it’s too bright. The specs claim that it has a 3W output (no explicit lumens rating, however, far from a color temperature), which roughly translates to a 30W incandescent equivalent.

Time to dive in. Let’s begin with the underside, where a label is attached to a felt “foot”:

A Google search on “Arcadia AL40165” reveals nothing meaningful results-wise aside from the Home Depot product page. “Intertek 4000145” isn’t any more helpful. And, regardless of when we actually bought it, this particular unit was apparently manufactured in December 2016.

Peeling back the felt “foot”, I was initially confused by the three closed-end crimp connectors revealed underneath:

until I peeled it away the rest of the way and…oh yeah, the on/off switch:

Note the wiring colors. Typically, in my experience, the “+” DC feed corresponds to the white wire, with the “-“ return segment handled by the black wire, and the “+” portion of the circuit is what’s switched. This implementation seems opposite of that convention. Hold that thought.

Now for the light source. With the lamp switched off, you can see what appears to be a central LED surrounded by several others in circumference. Conceptually, this matches the arrangement I’ve seen before with LED light bulbs, so my initial working theory was that whatever circuitry was driving the LEDs in the perimeter had failed, leaving only the central one still operational. Why there would be such a two-stage arrangement at all wasn’t obvious, although I postulated that this same hardware might find use in another lamp with a three-position (bright/dim/off) toggle switch.

Removing the diffuser:

unfortunately dashed that theory; there was only a single LED in the center:

Here’s what it looks like illuminated, this time absent the diffuser:

A brief aside at this point: what’s with the second “right?” in the title? Well, when I mentioned to my wife the other day that I’d completed the teardown but hadn’t definitively figured out why the lamp had dimmed over time, she now said that to the best of her recollection, it had always been dim. Hmmm. If indeed I’d previously misunderstood her (and of course, my default stance is to always assume my wife is right…right?), then what we have is a faulty LED from the get-go. But just for grins, let’s pretend my dimmer-over-time recollection is correct and proceed.

One other root cause possibility is that the power supply feeding the LED is in the process of failing, thereby outputting under-spec voltage and/or current. Revisiting the earlier white-vs-black wire discussion, when I initially probed the solder connections with my multimeter using standard polarity conventions, I got a negative voltage reading:

The LED theoretically could have been operating in reverse-bias breakdown (albeit presumably not for long). But more likely, in conjunction with the earlier-mentioned switch location in the circuit, the wire colors were just reversed. Yep, that’s more like it:

Note that their connections to the LED might still be reversed, however. Or perhaps the lamp’s power supply was current output-compromised. To test both of these suppositions, I probe-connected and fueled the LED with my inexpensive-and-passable power supply instead:

Version 1.0.0

With the connections using standard white vs. black conventions, I got…nothing. Reversed, the LED light output weakly matched that delivered when driven by the lamp’s own power supply. And my standalone power supply also informed me that the lamp pulls 180 mA at 10 V.

About that “lamp’s own power supply”, by the way (as-usual accompanied by a 0.75″/19.1 mm diameter U.S. penny for size comparison purposes):

The label refers to it as an “LED Driver,” but I’m guessing that it’s just a normal “wall wart”, absent a plug on the output end. And a Google search of “JG-LED1-5UPPL” (that’s the number 5, not an S, by the way) further bolsters that hypothesis (“Intertek 4002637” conversely wasn’t helpful at all, aside from suggesting that this power supply unit (PSU) was originally intended for a different lamp model). But I’m still baffled by the “DC5-10V MAX” notation in the labeled output specs…???

And removing two more screws, here’s what the plate the LED is mounted to looks like when separated from the “heatsink” behind it (note the trivial dab of thermal paste between them):

All leaving me with the same question I had at the start: what caused the LED-based desk lamp’s light output to dim, either over time or from the very beginning (depending on which spouse’s story you’re going with)? The most likely remaining culprit, I’m postulating, is the phosphor layer above the LED. I’ve already noted the scant-at-best heat-transfer interface between the LED and the metal plate behind it. More generally, as this device definitely exemplifies, my research suggests that inexpensive designs skimp on the number of LEDs to keep the BOM cost down, compensating by overdriving the one(s) that remain. The resulting thermal stress prematurely breaks down the phosphor, resulting in color temperature shifts and reduced light output, along with eventual complete component failure.

That’s my take; what’s yours? Let me know your thoughts in the comments!

—Brian Dipert is the Editor-in-Chief of the Edge AI and Vision Alliance, and a Senior Analyst at BDTI and Editor-in-Chief of InsideDSP, the company’s online newsletter.

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• LED lamp cycles on and off, why?

The post Disassembling a LED-based light that’s not acting quite right…right? appeared first on EDN.

The new battery fuel gauges use Dynamic Z-Track technology to offer up to 30% longer run times in battery-powered devices.

LED chip maker San’an Optoelectronics of Xiamen City, Fujian Province, China and Malaysia-based outsourced semiconductor assembly & test (OSAT) service provider Inari Amertron Berhad have entered into a definitive agreement to acquire Netherlands-based LED product and lighting maker Lumileds Holding B.V. and its European and Asian subsidiaries (Lumileds International)...

Before building a full temperature controlled chamber for slow /"natural" temp variance... I'm trying to see how my Scale behave in various environnements ahah submitted by /u/Bobun [link] [comments]

im so proud making this :) submitted by /u/Trick_Respond_4674 [link] [comments]

With India undergoing rapid urbanisation and infrastructural growth, there is a demand for materials that are either strong, resilient, or sustainable. These very TMT bars constitute the crux of modern construction. The city-based constructions in the country represent a host of varieties, such as residential, flyovers, industrial plants, skyscrapers, bridges, and buildings. The TMT bars warrant strength with a little flexibility so that its enhancement work on both durability and safety.

The whole range of TMT bars is competing to attract the buyers who seek high-performance bars with most advanced features. Raw materials, the technological process used for their manufacture, strength, ductility, and resistance to corrosion are among the differences existing among bars.

Here follows an all-encompassing guide for the Top 10 TMT Bar Brands in India, showing the feature-based distinction, application, and technology advantage.

1. TATA Tiscon 550SD:

TATA Tiscon is the pioneer in the Indian TMT industry, being the first rebar brand in India. Supported by TATA Steel, it came out with the super ductile 550SD TMT bar using an advanced technology of Morgan, USA. TATA Tiscon 550SD bars, being GreenPro certified, hence are the environmentally friendly variety. With very high tensile strength and flexibility, they become an ideal candidate for earthquake-prone zones and heavy-duty infrastructure.

2. SAIL’s SeQR:

Outstanding ductility is attributed to SAIL’s SeQR TMT bars that are manufactured by Steel Authority of India Limited, along with fire resistance and UTS/YS ratio. These bars are heat resistant up to the temperature of 600°C, and special corrosion-resistant varieties (HCR) are available for coastal or damp environments.

The TMT bars by SAIL possess excellent energy absorption that is desired for resisting the shocks from seismic or other sudden structural stresses.

3. JSW Neosteel:

Produced from virgin iron ore, JSW Neosteel 500D/550D bars offer superior metallurgical quality. Because of their weldability and flexibility, they can resist seismic forces, making them sought after in regions prone to earthquakes.

Their low carbon content maintains structural integrity and allows easy fabrication, especially for large projects.

4. Jindal Panther:

Jindal Panther TMT bars have ductility and bonding strength imparted by German TEMPCORE technology. Uniform rib patterns allow a better grip for concrete, which serves the objectives for high-rise buildings.

The FE 500D grade is said to embody the right mix of strength and flexibility.

5. SRMB Steel:

The SRMB uses special X-pattern ribs to ensure better grip with cement and thereby minimize slippage and.mvare a better performance of the structure. These bars come with ISO and BIS certification, and therefore, they have good corrosion resistance and can be used for various residential and commercial applications.

6. Kamdhenu TMT:

These micro-alloyed steel bars from Kamdhenu are ISI-certified and supplied all over India. They are classified as 550D TMT bars and have properties like good elongation, flexibility, and fire resistance.

They are a cost-effective option for home construction, real estate, and semi-urban projects.

7. Vizag Steel:

Produced by the RINL- Rashtriya Ispat Nigam Limited, the Vizag Steel TMT bars find wide use in government and public infrastructure projects. Due to their uniform quality and corrosion-resistant properties, they are used for large-scale civil projects that include metros, flyovers, and industrial buildings.

8. Shyam Steel:

Shyam Steel FE 500D TMT bars have advantages of fire resistance, corrosion protection, and elongation values and are ISO-certified with German technology. Such bars are recommended for high-rise residential complexes as well as commercial buildings.

9. Electrosteel:

Electrosteel TMT bars, widely renowned for their bendability, low carbon content, and resistance to rust, give the buyers value for their money in terms of durability. Private contractors and small-scale builders looking for good value for money are going for these.

10. Essar TMT Bars:

Essar TMT bars, processed by Thermex technology, ensure uniformity, weldability, and good finish; hence, they find widespread use in commercial buildings, real estate projects, and infrastructure and thus guarantee long durability.

Comparison:

Brand	Key Strengths	Grades	Technological Edge
TATA Tiscon	GreenPro certified, super ductility, earthquake resistant	FE 415, FE 500, 550SD	Morgan USA tech, automated production
SAIL SeQR	Fire-resistant up to 600°C, corrosion & seismic resistant	FE 500, EQR, HCR	High UTS/YS ratio
JSW Neosteel	Made from virgin iron ore, high strength-to-weight ratio	500D, 550D	Thermo-Mechanical Treatment, low carbon content
Jindal Panther	German technology, ductile, strong bonding	FE 500D	TEMPCORE technology
SRMB Steel	X-pattern ribs for superior grip, BIS & ISO certified	FE 500, 550	X-rib technology, corrosion resistance
Kamdhenu TMT	Micro-alloyed steel, pan-India reach	FE 500, 550D	ISI-certified
Vizag Steel	Corrosion-resistant, government-preferred	FE 500D	Integrated steel plant production
Shyam Steel	Weldability, fire resistance, high elongation	FE 500D	German machinery, ISO certified
Electrosteel TMT	Rust-proof, strong bendability, BIS certified	FE 500D	Uniform heat treatment
Essar TMT Bars	Excellent finish, good weldability, long life	FE 500D	Thermex process

Choosing the right TMT bars is the cornerstone of structural integrity and durability into the future. Some factors are considered when choosing a TMT bar:

Grade of the Bar:

FE 415 is suitable for small residential buildings. FE 500 and 550D are used for high-rises, bridges, and commercial structures because of their higher tensile strength.

Corrosion Resistance:

Bars such as SAIL SeQR HCR or JSW Neosteel can be used for corrosion resistance in the coastal or humid environment.

Earthquake Resistance:

In seismic zones, bars with high ductility and UTS/YS ratio are required, such as Tata Tiscon 550SD or Jindal Panther.

Certifications & Quality Assurance:

Look for brands certified by BIS, ISO, or GreenPro, which assures compliance with Indian construction standards.

Conclusion:

India’s future infrastructure will rely on materials that combine strength and safety with sustainability. The right choice of TMT bar brand is therefore important for structural integrity. Whether it be for a small house or a mega commercial complex, the above-mentioned brands provide features suitable for a whole range of applications.

The post Top 10 TMT Bar in India appeared first on ELE Times.

Photonic simulation CAD software developer Photon Design Ltd of Oxford, UK says that the quantum dot (QD) module for its HAROLD laser simulation tool is now available as a release candidate for customer evaluation...

Zhiting Tian, a professor in Cornell University’s Sibley School of Mechanical and Aerospace Engineering, has been selected as the recipient of the Defense Advanced Research Projects Agency (DARPA) Director’s Fellowship Award, a selective award given annually to the top performers in the DARPA Young Faculty Award pool...

📅 КПІ ім.Ігоря Сікорського запрошує на навчання kpi пн, 08/04/2025 - 11:34

Вступ на бакалаврат до КПІ ім. Ігоря Сікорського 2025 kpi пн, 08/04/2025 - 11:19

MPU Integrates a Quad-Core CPU, an NPU, High-Speed Connectivity and Advanced Graphics to Power Next-Generation HMI Devices with Full HD Display

Renesas Electronics Corporation, a premier supplier of advanced semiconductor solutions announced the launch of its new 64-bit RZ/G3E microprocessor (MPU), a general-purpose device optimized for high-performance Human Machine Interface (HMI) applications. Combining a quad-core Arm Cortex-A55 running at up to 1.8GHz with a Neural Processing Unit (NPU), the RZ/G3E brings high-performance edge computing with AI inference for faster, more efficient local processing. With Full HD graphics support and high-speed connectivity, the MPU targets HMI systems for industrial and consumer segments including factory equipment, medical monitors, retail terminals and building automation.

High-Performance Edge Computing and HMI Capabilities

At the heart of the RZ/G3E is a quad-core Arm Cortex-A55, a Cortex-M33 core, and the Ethos-U55 NPU for AI tasks. This architecture efficiently runs AI applications such as image classification, object recognition, voice recognition and anomaly detection while minimizing CPU load. Designed for HMI applications, it delivers smooth Full HD (1920×1080) video at 60fps on two independent displays, with output interfaces including LVDS (dual-link), MIPI-DSI, and parallel RGB. A MIPI-CSI camera interface is also available for video input and sensing applications.

“The RZ/G3E builds on the proven performance of the RZ/G series with the addition of an NPU to support AI processing,” said Daryl Khoo, Vice President of Embedded Processing at Renesas. “By using the same Ethos-U55 NPU as our recently announced RA8P1 microcontroller we’re expanding our AI embedded processor portfolio and offering a scalable path forward for AI development. These advancements address the demands of next-generation HMI applications across vision, voice and real-time analytics with powerful AI capabilities.”

The RZ/G3E is equipped with a range of high-speed communication interfaces essential for edge devices. These include PCI Express 3.0 (2 lanes) for up to 8Gbps, USB 3.2 Gen2 for fast 10Gbps data transfer, and dual-channel Gigabit Ethernet for seamless connectivity with cloud services, storage, and 5G modules.

Low-Power Standby with Fast Linux Resume

Starting with the third-generation RZ/G3S, the RZ/G series includes advanced power management features to significantly reduce standby power. The RZ/G3E maintains sub-CPU operation and peripheral functions while achieving low power consumption around 50mW and around 1mW in deep standby mode. It supports DDR self-refresh mode to retain memory data, enabling quick wake-up from deep standby for running Linux applications.

Comprehensive Linux Software Support

Renesas continues to offer the Verified Linux Package (VLP) based on the reliable Civil Infrastructure Platform, with over 10 years of maintenance support. For users requiring the latest versions, Renesas provides Linux BSP Plus, including support for the latest LTS Linux kernel and Yocto. Ubuntu by Canonical and Debian open-source OS are also available for server or desktop Linux environments.

Key Features of RZ/G3E

• CPU: Quad-core Cortex-A55 (up to 1.8GHz), Cortex-M33
• NPU: Ethos-U55 (512 GOPS)
• HMI: Dual Full HD output, MIPI-DSI / Dual-link LVDS / Parallel RGB, 3D graphics, H.264/H.265 codec
• Memory Interface: 32-bit LPDDR4/LPDDR4X with ECC
• Connectivity for 5G Communication: PCIe 3.0 (2 lanes), USB 3.2 Gen2, USB 2.0 x2, Gigabit Ethernet x2, CAN-FD
• Operating Temperature: -40°C to 125°C
• Package Options: 15mm square 529-pin FCBGA, 21mm square 625-pin FCBGA
• Product Longevity: 15-year supply under Product Longevity Program (PLP)

The post Renesas Introduces 64-bit RZ/G3E MPU for High-Performance HMI Systems Requiring AI Acceleration and Edge Computing appeared first on ELE Times.

AEC-Q101 Qualified Devices Save Board Space While Offering High Stability for Automotive Applications

Vishay Intertechnology, Inc. introduced a new series of uni/bidirectional 1500 W surface-mount PAR transient voltage suppressors (TVS) in the SMB (DO-214AA) package. To meet the demands of automotive applications, the Vishay General Semiconductor T15BxxA and T15BxxCA series are AEC-Q101 qualified and offer high temperature operation to +185 °C.

Compared to TVS in the SMC (DO-214AB) package, the Automotive Grade devices released today provide a 58 % smaller footprint to save board space and lower system costs. The unidirectional T15BxxA series offers extremely stable breakdown voltages from 12 V to 51 V, while the bidirectional T15BxxCA series provides breakdown voltages from 12V to 100 V. The devices offer excellent clamping capability — 17.0 V to 70.1 V for the T15BxxA and 17.0 V to 137 V for the T15BxxCA — and very fast response times.

The TVS are designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning. Typical applications will include lighting, electro-mechanical brake (EMB), and fuel pump control; 48 V DC/DC converters and inverters; integrated starter generators, BMS, vehicle control units (VCU), and on-board chargers; and telematics control units (TCU) for audio, electronic stability control (ESC), and radar sensors.

The devices meet MSL level 1 standards per J-STD-020 and are RoHS-compliant and halogen-free.

The post Vishay Intertechnology Uni/Bidirectional 1500 W PAR TVS Solutions Offer High Temperature Operation to +185 °C in SMB (DO-214AA) Package appeared first on ELE Times.

I made this dummy PCB on my 3D printer before submitting a front panel board to the PCB manufacturer. Turned out to be a nice method to avoid part alignment mishaps. The accuracy was in fact down to about 0.1 mm 💪 submitted by /u/Party-Butterfly-4857 [link] [comments]

I had to add a bypass set of capacitors at the voltage divider that was feeding the + input of the opamp. I also had to add a low - pass filter on the signal input, especially if I attempted to use my phone as audio input it had a lot of noise on it and apparently the phone expects a somewhat low impedance or it will get even noiser. I then also had to put a capacitor / resistor network across the feedback resistor to enforce lowering the gain at higher frequencies which prevented the opamp from oscillating during large signal swings. And now it is fully functional, mounted to a heatsink. Puts out about 14watts into 4 ohms at 30volts supply. Will do almost 20 watts into 2ohm load. I will be switching the potentiometer out for a smaller PCB style one and also integrating the input filter directly on the board soon. submitted by /u/Perfect-Campaign9551 [link] [comments]

In this article, we'll investigate how varying the amplitude and frequency of the modulating tone impacts the bandwidth of FM signals. We'll also compare the modulation index in AM and FM schemes.

submitted by /u/SpecialistRare832 [link] [comments]

This is a pico 2 clone I made called PicoPlus. It's a drop in replacement* of the Raspberry Pi Pico 2. It has a WS2812B neopixel, 128MB SPI Flash on SPI0, 64MB PSRAM on SPI1, and a user button on GP24. I spent a bunch of time getting all the components to fit together, and reflowing this board myself. GitHub *GP0 is used as the chip select for the PSRAM chip, but can be disabled by cutting a solder jumper on the back submitted by /u/Badbird_5907 [link] [comments]