Feed aggregator

Учений КПІ Юрій Яворський — лауреат премії Верховної Ради України kpi чт, 01/29/2026 - 22:07

КПІ та КНДІСЕ посилюють співпрацю у сфері судових експертиз kpi чт, 01/29/2026 - 21:18

Wolfspeed Inc of Durham, NC, USA — which makes silicon carbide (SiC) materials and power semiconductor devices — has introduced its new TOLT package portfolio, which enables maximum power density in a power supply for data-center rack applications...

Tokyo-based NEC Corp has developed a high-efficiency, compact power amplifier module (PAM) for the sub-6GHz band, designed for integration into 5G base-station radio units (RUs)...

Discrete semiconductor and passive electronic component maker Vishay Intertechnology Inc of Malvern, PA, USA has introduced five new 1200V MOSFET power modules designed to increase power efficiency for medium- to high-frequency applications in automotive, energy, industrial and telecom systems...

As technological advancements continue to pursue personalisation & customisation at every level, illumination has also transformed from a need to a customisation. Consequently, the LED industry is moving towards a similar yet prominent stride, making customised and occasion-specific solutions, keeping in consideration the human behaviour and lighting changes across the day. Long seen as the constant and uniform thing, illumination is now being reimagined as something dynamic and customisable.  

In the same pursuit, the industry has moved towards enabling Human-Centric Lighting(HCL), where lighting is designed and engineered to emulate natural daylight, ranging from dimming them as the Sun goes down, while brightening up as the day begins. Gradually, illumination is now being designed around human biology, visual comfort, and cognitive performance rather than simple brightness or energy efficiency. 

But what lies behind this marvel is hardcore engineering. Technically, the result is made possible by the marvels of spectral engineering & control architectures, wherein the former adjusts the light spectrum while the latter enables the intelligence directing the timing changes of the lighting system. Simultaneously, the dual play brings forth today’s human-centric lighting into real-life examples and is also making them more customised and personalised. This ultimately helps in supporting human circadian rhythms, enhancing well-being, mood, and performance. 

To enable these engineered outcomes, embedded sensors, digital drivers, and networked control platforms are integrated into the modern-day LED lights, transforming illumination into a responsive, data-driven infrastructure layer. In combination, spectral engineering and intelligent control systems are reshaping the capabilities of LED lighting, transforming it from a passive utility into a dynamic, precision-engineered tool for enhancing human wellbeing, productivity, and performance.

How is Spectral Power Distribution engineered? 

When we talk about LED lights, white light is the first thing that comes to our minds. Although the same is not true scientifically. Surprisingly, LEDs inherently emit blue light and not white. To turn the blue light into white, a Phosphor coating is applied over it. Consequently, the blue light mixes with the phosphor to turn some of the light into green, red & yellow simultaneously. These lights eventually mix to turn white.

Spectral Power Distribution (SPD) is simply the profile of the white colour which is not visible to our naked eyes, and how much of each colour is present in the visible white light. The final light can be controlled by various means, such as the type of phosphor, how thick the phosphor layer is, or by adding extra coloured LEDs (like red or cyan). 

Spectral Power Distribution is engineered by carefully mixing different colours of light inside an LED, even though it looks white, so that the light feels right for the human body and mind. 

Engineering the Spectral Power Distribution of White LEDs

Often, it is seen that the very same white light is sometimes harsh while sometimes soft- all this is because of various variables. Today, from being a static character, SPD has turned into a tunable design parameter,++ becoming a Controllable Design Variable. To this effect, SPD is largely controlled by Phosphor composition (which colours it emits), Particle size and density, and finally Layer thickness and distribution. 

That’s why the same 400K LEDs from different manufacturers can feel completely different — their SPDs are different, even if the Correlated Color Temperature (CCT) is the same. But as long as the final color is decided by some application made during manufacturing, the effect remains static. While spectral Power distribution is essential, it is equally important to dictate the given behaviour as per the time of the day.

Multi-Channel LED Configurations for Spectral Tunability

To enable a real-time nature to this Spectral tunability, engineers today use multiple LED channels, including: 

• White + Red
• White + Cyan
• RGBW / RGBA
• Tunable white (warm white + cool white)

By precisely varying the current supplied to each LED channel, the spectral power distribution can be reshaped in real time, allowing the system to shift between blue-enriched and blue-reduced lighting modes as required. This level of control allows you to adjust the perceived colour temperature independently of the light’s biological impact, rather than having them locked together. As a result, SPD is no longer a fixed characteristic of the light source but becomes a dynamic, real-time controllable design parameter.

Melanopic Response, Circadian Metrics, and Spectral Weighting

When we talk about light, visibility & brightness make up the primary issue, but that has changed drastically with the emergence of Human Centric Lighting (HCL). With HCL coming into play, photopic lux, the quantification of brightness, is no longer a go-to metric to decide upon the quality of lighting. It is because it explained only one part of the coin, which is visibility, and not how this light or visibility affects human biology. 

At the same time, Human Centered Lighting focuses on how light affects the circadian system, alertness, sleep–wake cycles, mood, and hormonal regulation. This phenomenon has brought up new metrics that tell us not only about the brightness or visibility, but also how it biologically acts.  One such metric is Melanopic Lux, which weights the spectrum based on melanopsin sensitivity. Melanopsin is a photopigment in our eyes, usually sensitive to Blue-Cyan light.  

Interestingly, more melanopic stimulation → increased alertness and circadian activation, while less melanopic stimulation → relaxation and readiness for sleep. That’s where we come to the core of our subject – Light induced behaviuour. The emergence of Melanopic Lux allows engineers to decouple visual brightness from biological effect, giving the right direction to Human Centric Lighting. 

While melanopic metrics define what kind of biological response light should produce, control architectures determine when and how that response is delivered. Translating circadian intent into real-world lighting behaviour requires intelligent control systems capable of dynamically adjusting spectrum, intensity, and timing throughout the day. This is where embedded sensors, digital LED drivers, and networked control platforms come into play, enabling lighting systems to modulate melanopic content in real time—boosting circadian stimulation during the day and reducing it in the evening—without compromising visual comfort or energy efficiency.

Other metrics, such as Melanopic Equivalent Daylight Illuminance (EDI) and Circadian Stimulus (CS) are used to quantify how effectively a light source supports circadian activation or melatonin suppression, beyond what photopic lux can describe.

LED Drivers and Power Electronics for Dynamic Spectral Control

In human-centric lighting systems, LED drivers are no longer simple power supplies but precision control elements that translate circadian intent into real-world illumination. Because LEDs are current-driven devices, accurate current regulation is essential to maintain stable brightness and spectral output, especially as temperature and operating conditions change.

Dynamic spectral tuning typically relies on multi-channel LED architectures, making channel balancing a critical requirement. Each LED colour behaves differently electrically and thermally, and without independent, well-balanced current control, the intended spectral profile can drift over time, affecting both visual quality and biological impact.

Equally important is dimming accuracy. Human-centric lighting demands smooth, flicker-free dimming that preserves spectral integrity at all brightness levels, particularly during low-light, evening scenarios. Advanced driver designs enable fine-grained dimming and seamless transitions, allowing lighting systems to dynamically adjust spectrum and intensity throughout the day while maintaining visual comfort and circadian alignment.

System Integration Challenges and Design Trade-Offs
While human-centric lighting promises precise control over both visual and biological responses, delivering this in real-world systems involves significant integration challenges and design trade-offs. Spectral accuracy, electrical efficiency, thermal management, and system cost must all be balanced within tight form-factor and reliability constraints. Multi-channel LED engines increase optical and control complexity, while higher channel counts demand more sophisticated drivers, sensing, and calibration strategies.

Thermal effects further complicate integration, as LED junction temperature directly influences efficiency, colour stability, and lifetime. Without careful thermal design and feedback control, even well-engineered spectral profiles can drift over time. At the same time, adding sensors, networking, and intelligence introduces latency, interoperability, and cybersecurity considerations that must be addressed at the system level.

Ultimately, successful human-centric lighting solutions are defined not by any single component, but by holistic co-design—where optics, power electronics, controls, and circadian metrics are engineered together. The trade-offs made at each layer determine whether a system merely adjusts colour temperature or truly delivers biologically meaningful, reliable, and scalable lighting performance.

The post Spectral Engineering and Control Architectures Powering Human-Centric LED Lighting appeared first on ELE Times.

Story Highlights
 Dell AI Factory with NVIDIA to provide scalable and secure infrastructure for NxtGen’s AI platform, India’s first and largest AI factory, enabling national-scale AI development.
 This milestone deployment accelerates India’s AI mission, enabling large‑scale generative, agentic, and physical AI while expanding NxtGen’s high‑performance AI services nationwide.

Dell Technologies today announced that NxtGen AI Pvt Ltd, one of India’s foremost sovereign cloud and AI infrastructure providers, has selected Dell AI Factory with NVIDIA solutions for building India’s first and largest dedicated AI factory. This milestone deployment will significantly expand India’s national AI capability, enabling large-scale generative AI, agentic AI, physical AI, and high-performance computing across enterprises, start-ups, and government programs.

Dell will provide the core infrastructure, including Vertiv liquid-cooled Dell PowerEdge XE9685L servers, delivered through Dell Integrated Rack Scalable Systems, for NxtGen’s new AI cluster, empowering the company to meet the growing demand for AI as a Service and large-scale GPU capacity.

Why it matters

This accelerated computing infrastructure is vital for advancing India’s AI mission, significantly expanding NxtGen’s AI cloud services for a diverse range of clients, from start-ups to academia and government. By empowering NxtGen with this advanced foundation, Dell is accelerating India’s next wave of AI development and innovation, ensuring critical access to high-performance AI capabilities across the region.

Powering the future of AI with advanced Dell AI infrastructure

The Dell AI Factory with NVIDIA combines AI infrastructure, software, and services in an advanced, full-stack platform designed to meet the most demanding AI workloads and deliver scalable, reliable performance for training and inference. Leveraging the Dell AI Factory with NVIDIA, NxtGen will deploy Vertiv liquid-cooled, fully integrated Dell IR5000 racks featuring Dell PowerEdge XE9685L servers with the NVIDIA accelerated computing platform to build a cluster with over 4,000 NVIDIA Blackwell GPUs, NVIDIA BlueField-3 DPUs, and NVIDIA Spectrum-X Ethernet networking, all purpose-built for AI. These will be complemented by Dell PowerEdge R670 servers and Dell PowerScale F710 storage.

Dell AI Factory with NVIDIA: Empowering AI for Human Progress

The Dell AI Factory with NVIDIA offers a full stack of AI solutions from data center to edge, enabling organizations to rapidly adopt and scale AI deployments. The integration of Dell’s AI capabilities with NVIDIA’s accelerated computing, networking, and software technologies provides customers with an extensive AI portfolio and an open ecosystem of technology partners. With more than 3,000 customers globally, the Dell AI Factory with NVIDIA reflects Dell’s leadership in enabling enterprises with scalable, secure and high-performance AI infrastructure.

The comprehensive Dell AI Factory with NVIDIA portfolio provides a simplified and reliable foundation for NxtGen to deliver advanced AI capabilities at speed and scale. This allows NxtGen to deliver on its core mission of providing sovereign, cost-effective and powerful AI services that help businesses grow and innovate, while at the same time reinforcing Dell’s commitment to providing the technology that drives human progress.

By equipping organizations like NxtGen with cutting-edge AI infrastructure and services, Dell is helping to unlock new possibilities and create a future where technology empowers everyone to achieve more.

Perspectives

“India’s rapid AI growth demands strong, reliable, and future-ready infrastructure,” said Manish Gupta, president and managing director, India, Dell Technologies. “Dell Technologies is addressing this need through the Dell AI Factory with NVIDIA, designed to simplify and scale AI deployments across industries. As the top AI infrastructure provider, we are enabling this shift by combining storage, compute, networking and software to accelerate AI adoption. Our collaboration with NxtGen brings these capabilities closer to Indian enterprises, helping them deploy AI efficiently and cost-effectively. This marks another step in our commitment to empowering India’s digital future through secure, scalable, and sovereign AI infrastructure.”

“NxtGen is committed to building India’s AI backbone,” said A. S. Rajgopal, managing director and chief executive officer, NxtGen. “This deployment marks a significant milestone for the country: India’s largest AI model-training cluster, built and operated entirely within India’s sovereign cloud framework. Dell Technologies has been critical in enabling this scale, performance, and reliability. Together, we are unlocking the infrastructure that will power the next generation of Indian AI models and applications.”

“India’s ambitious AI mission requires a foundation of secure, high-performance accelerated computing infrastructure to enable model and AI application development,” said Vishal Dhupar, managing director, Asia South, NVIDIA. “Dell’s integration of NVIDIA AI software and infrastructure, including NVIDIA Blackwell GPUs and NVIDIA Spectrum-X networking, provides the AI factory resources to help NxtGen accelerate this critical national capability.”

The post ​​Dell Technologies Enables NxtGen to Build India’s Largest AI Factory appeared first on ELE Times.

Bengaluru, India, January 28th, 2026 – Quest Global, the world’s largest independent pure-play engineering services company, today announced the appointment of Richard (Rick) Bergman as President & Global Business Head of its Semiconductor vertical.

As the Global Business Head, Rick will focus on shaping the division’s long-term strategy, accelerating revenue growth, and deepening relationships with global customers. His responsibilities include defining a multi-year growth roadmap, supporting clients’ success through high-impact and transformational solutions, especially in AI, automotive, and industrial sectors, and fostering a culture of innovation and operational excellence to meet next-generation engineering demands.

“The semiconductor industry is at a turning point, fueled by AI, system innovation, and shifting supply chains,” says Ajit Prabhu, Co-Founder and CEO, Quest Global. “Rick is a fantastic addition to our team. He brings incredible leadership across semiconductors and computing, plus a real talent for scaling organizations and building genuine, long-term relationships with customers. Bringing him on board is a clear sign of our commitment to growing this vertical and making sure Quest Global remains a humble, trusted partner for engineering and transformation in this space.”

“Semiconductors are the foundational enablers of innovation across AI, high-performance computing, automotive, communications, and industrial systems,” said Rick Bergman, President & Global Business Head – Semiconductor, Quest Global. “What attracted me to Quest Global is the company’s unique combination of deep engineering DNA, global scale, and a long-term partnership mindset with customers. As the industry navigates increasing complexity, my focus will be on helping customers solve their most critical engineering challenges while building a scalable, high-impact business.”

Rick brings more than two decades of leadership experience across semiconductors, computing, graphics, and advanced technology platforms. Most recently, he served as President and CEO of Kymeta Corporation. Previously, he held senior leadership roles at AMD, Synaptics, and ATI Technologies. Throughout his career, Rick has led multi-billion-dollar businesses, overseen major acquisitions, and built high-performing global teams.

This appointment underscores Quest Global’s commitment to building category-leading leadership and scaling its Semiconductor business, aligned with evolving customer needs.

About Quest Global

At Quest Global, it’s not just what we do but how and why we do it that makes us different. We’re in the business of engineering, but what we’re really creating is a brighter future. For over 25 years, we’ve been solving the world’s most complex engineering problems. Operating in over 18 countries, with over 93 global delivery centers, our 21,500+ curious minds embrace the power of doing things differently to make the impossible possible. Using a multi-dimensional approach, combining technology, industry expertise, and diverse talents, we tackle critical challenges faster and more effectively. And we do it across the Aerospace & Defense, Automotive, Energy, Hi-Tech, MedTech & Healthcare, Rail and Semiconductor industries. For world-class end-to-end engineering solutions, we are your trusted partner.

The post Quest Global Appoints Richard Bergman as Global Business Head of its Semiconductor Division appeared first on ELE Times.

Specialty IC foundry service provider Vanguard International Semiconductor Corp (VIS) of Hsinchu Science Park, Taiwan has signed a technology licensing agreement with Taiwan Semiconductor Manufacturing Company Ltd (TSMC) for high-voltage (650V) and low-voltage (80V) gallium nitride (GaN) technologies. This will help VIS to accelerate the development and expansion of next‑generation GaN power technologies for applications such as data centers, automotive electronics, industrial control, and energy management, which are key areas that demand high‑efficiency power conversion...

The saying “round pegs do not fit square holes” persists because it captures a deep engineering reality: inefficiency most often arises not from flawed components, but from misalignment between a system’s assumptions and the problem it is asked to solve. A square hole is not poorly made; it’s simply optimized for square pegs.

Modern large language models (LLMs) now find themselves in exactly this situation. Although they are overwhelmingly executed on general-purpose graphics processing units (GPGPUs), these processors were never shaped around the needs of enormous inference-based matrix multiplications.

GPUs dominate not because they are a perfect match, but because they were already available, massively parallel, and economically scalable when deep learning began to grow, especially for training AI models.

What follows is not an indictment of GPUs, but a careful explanation of why they are extraordinarily effective when the workload is rather dynamic and unpredictable, such as graphic processing, and disappointedly inefficient when the workload is essentially regular and predictable, such as AI/LLM inference execution.

The inefficiencies that emerge are not accidental; they are structural, predictable, and increasingly expensive as models continue to evolve.

Execution geometry and the meaning of “square”

When a GPU renders a graphic scene, it deals with a workload that is considerably irregular at the macro level, but rather regular at the micro level. A graphic scene changes in real time with significant variations in content—changes in triangles and illumination—but in an image, there is usually a lot of local regularity.

One frame displays a simple brick wall, the next, an explosion creating thousands of tiny triangles and complex lighting changes. To handle this, the GPU architecture relies on a single-instruction multiple threads (SIMT) or wave/warp-based approach where all threads in a “wave” or “warp,” usually between 16 and 128, receive the same instruction at once.

This works rather efficiently for graphics because, while the whole scene is a mess, local patches of pixels are usually doing the same thing. This allows the GPU to be a “micro-manager,” constantly and dynamically scheduling these tiny waves to react to the scene’s chaos.

However, when applied to AI and LLMs, the workload changes entirely. AI processing is built on tensor math and matrix multiplication, which is fundamentally regular and predictable. Unlike a highly dynamic game scene, matrix math is just an immense but steady flow of numbers. Because AI is so consistent, the GPU’s fancy, high-speed micro-management becomes unnecessary. In this context, that hardware is just “overhead,” consuming power and space for a flexibility that the AI doesn’t actually use.

This leaves the GPGPU in a bit of a paradox: it’s simultaneously too dynamic and not dynamic enough. It’s too dynamic because it wastes energy on micro-level programming and complex scheduling that a steady AI workload doesn’t require. Yet it’s not dynamic enough because it is bound by the rigid size of its “waves.”

If the AI math doesn’t perfectly fit into a warp of 32, the GPU must use “padding,” effectively leaving seats empty on the bus. While the GPU is a perfect match for solving irregular graphics problems, it’s an imperfect fit for the sheer, repetitive scale of modern tensor processing.

Wasted area as a physical quantity

This inefficiency can be understood geometrically. A circle inscribed in a square leaves about 21% of the square’s area unused. In processing hardware terms, the “area” corresponds to execution lanes, cycles, bandwidth, and joules. Any portion of these resources that performs work that does not advance the model’s output is wasted area.

The utilization gap (MFU)

The primary way to quantify this inefficiency is through Model FLOPs Utilization (MFU). This metric measures how much of the chip’s theoretical peak math power is actually being used for the model’s calculations versus how much is wasted on overhead, data movement, or idling.

For an LLM like GPT-4 running on GPGPT-based accelerators operating in interactive mode, the MFU drops by an order of magnitude with the hardware busy with “bookkeeping,” which encompasses moving data between memory levels, managing thread synchronization, or waiting for the next “wave” of instructions to be decoded.

The energy cost of flexibility

The inefficiency is even more visible in power consumption. A significant portion of that energy is spent powering the “dynamic micromanagement,” namely, the logic gates that handle warp scheduling, branch prediction, and instruction fetching for irregular tasks.

The “padding” penalty

Finally, there is the “padding” inefficiency. Because a GPGPU-based accelerator operates in fixed wave sizes (typically 32 or 64 threads), if the specific calculation doesn’t perfectly align with those multiples, often happening in the “Attention” mechanism of the LLM model, the GPGPU still burns the power for a full wave while some threads sit idle.

These effects multiply rather than add. A GPU may be promoted with a high throughput, but once deployed, may deliver only a fraction of its peak useful throughput for LLM inference, while drawing close to peak power.

The memory wall and idle compute

Even if compute utilization was perfect, LLM inference would still collide with the memory wall, the growing disparity between how fast processors can compute and how fast they can access memory. LLM inference has low arithmetic intensity, meaning that relatively few floating-point operations are performed per byte of data fetched. Much of the execution time is spent reading and writing the key-value (KV) cache.

GPUs attempt to hide memory latency using massive concurrency. Each streaming multiprocessor (SM) holds many warps and switches between them while others wait for memory. This strategy works well when memory accesses are staggered and independent. In LLM inference, however, many warps stall simultaneously while waiting for similar memory accesses.

As a result, SMs spend large fractions of idle time, not because they lack instructions, but because data cannot arrive fast enough. Measurements commonly show that 50–70% of cycles during inference are lost to memory stalls. Importantly, the power draw does not scale down proportionally since clocks continue toggling and control logic remains active, resulting in poor energy efficiency.

Predictable stride assumptions and the cost of generality

To maximize bandwidth, GPUs rely on predictable stride assumptions; that is, the expectation that memory accesses follow regular patterns. This enables techniques such as cache line coalescing and memory swizzling, a remapping of addresses designed to avoid bank conflicts and improve locality.

LLM memory access patterns violate these assumptions. Accesses into the KV cache depend on token position, sequence length, and request interleaving across users. The result is reduced cache effectiveness and increased pressure on address-generation logic. The hardware expends additional cycles and energy rearranging data that cannot be reused.

This is often described as a “generality tax.”

Why GPUs still dominate

Given these inefficiencies, it’s natural to ask why GPUs remain dominant. The answer lies in history rather than optimality. Early deep learning workloads were dominated by dense linear algebra, which mapped reasonably well onto GPU hardware. Training budgets were large enough that inefficiency could be absorbed.

Inference changes priorities. Latency, cost per token, and energy efficiency now matter more than peak throughput. At this stage, structural inefficiencies are no longer abstract; they directly translate into operational cost.

From adapting models to aligning hardware

For years, the industry focused on adapting models to hardware such as larger batches, heavier padding, and more aggressive quantization. These techniques smooth the mismatch but do not remove it.

A growing alternative is architectural alignment: building hardware whose execution model matches the structure of LLMs themselves. Such designs schedule work around tokens rather than warps, and memory systems are optimized for KV locality instead of predictable strides. By eliminating unused execution lanes entirely, these systems reclaim the wasted area rather than hiding it.

The inefficiencies seen in modern AI data centers—idle compute, memory stalls, padding overhead, and excess power draw—are not signs of poor engineering. They are the inevitable result of forcing a smooth, temporal workload into a rigid, geometric execution model.

GPUs remain masterfully engineered square holes. LLMs remain inherently round pegs. As AI becomes a key ingredient in global infrastructure, the cost of this mismatch becomes the problem itself. The next phase of AI computing will belong not to those who shave the peg more cleverly, but to those who reshape the hole to match the true geometry of the workload.

Lauro Rizzatti is a business advisor to VSORA, a technology company offering silicon semiconductor solutions that redefine performance. He is a noted chip design verification consultant and industry expert on hardware emulation.

Special Section: AI Design

• The AI design world in 2026: What you need to know
• AI workloads demand smarter SoC interconnect design
• AI’s insatiable appetite for memory
• The AI-tuned DRAM solutions for edge AI workloads
• Designing edge AI for industrial applications

The post Round pegs, square holes: Why GPGPUs are an architectural mismatch for modern LLMs appeared first on EDN.

📰 Газета "Київський політехнік" № 3-4 за 2026 (.pdf) Інформація КП чт, 01/29/2026 - 09:00

The two-day international technology conference is focused on promoting innovation in the Aerospace, Defence, and Space sectors, in conjunction with DEF-TECH Bharat 2026, held in Bengaluru.

With a strong India-centric focus, DefTech CON 2026 features high-impact keynote sessions, expert panels, technology showcases, and interactive QA sessions, covering areas such as AI & autonomous systems, cyber defence, unmanned systems, advanced materials, space tech, next-generation battlefield solutions, advanced sensors, secure communication networks, AI-driven command and control, electronic warfare systems, autonomous platforms, space-based surveillance, next-generation missile defence, and more. These technologies enable faster decision-making, enhanced interoperability, and greater operational dominance across land, air, sea, cyber, and space.

Designed as a venue for engineers, researchers, defence laboratories, industry leaders, startups, and system integrators, the conference unites India’s most brilliant minds to investigate emerging trends, groundbreaking solutions, and essential capabilities that are influencing the strategic future of the nation.

Click here to visit the website for more details!

The post Def-Tech CON 2026: India’s Biggest Conference on Advanced Aerospace, Defence and Space Technologies to Take Place in Bengaluru. appeared first on ELE Times.

3 stack peltier plates, PWM, DHT11 etc . The first indicator light is main power. 2nd is HV field, third turns on when 32F or less is reached in the chamber. I made this from found parts submitted by /u/Sisyphus_on_a_Perc [link] [comments]

Факультету біотехнологій і біотехніки КПІ ім. Ігоря Сікорського — 25 років kpi ср, 01/28/2026 - 21:29

Arrived from the US in a carry case full of foam that had deteriorated to dust. Spent a few hours just taking everything apart and cleaning all of that out with IPA and an air duster. First it needed some work to fix a bad connection on the high-voltage return. The previous owner had already had a go at it (hence the hose clamps on the grip) so at least I knew where to look. It turns on and works but it can't quite reach 30kV according its own display, so I will need to figure out how I'm going to verify that with a very high voltage probe. The thing is absolutely chock full of carbon composition resistors and capacitors that have probably gone bad so it is probably due for some replacements. If anyone is interested I might make a youtube video out of it going through the repair and testing process. submitted by /u/liamkinne [link] [comments]

The versatility of the venerable LMC555 CMOS analog timer is so well known it’s virtually a cliche, but sometimes it can still surprise us.  The circuit in Figure 1 is an example.  In it a single linear pot in a simple RC network sets the frequency of 555 square wave oscillation over a greater than 10 Hz to 100 kHz range, exceeding a 10,000:1 four decade, thirteen octave ratio.  Here’s how it works.

Figure 1 R1 sets U1 frequency from < 10Hz to > 100kHz.

Wow the engineering world with your unique design: Design Ideas Submission Guide

Potentiometer R1 provides variable attenuation of U1’s 0 to V+ peak-to-peak square wave output to the R4R5C1 divider/integrator.  The result is a sum of an abbreviated timing ramp component developed by C1 sitting on top of an attenuated square wave component developed by R5.  This composite waveshape is input to the Trigger and Threshold pins of U1, resulting in the frequency vs R1 position function plotted on Figure 2′s semi-log graph.

Figure 2 U1 oscillation range vs R1 setting is so wide it needs a log scale to accommodate it.

Curvature of the function does get pretty radical as R1 approaches its limits of travel. Nevertheless,  log conformity is fairly decent over the middle 10% to 90% of the pot’s travel and the resulting 2 decades of frequency range. This is sketched in red in Figure 3.

Figure 3 Reasonably good log conformity is seen over mid-80% of R1’s travel.

Of course, as R1 is dialed to near its limits, frequency precision (or lack of it) becomes very sensitive to production tolerances in U1’s internal voltage divider network and those of the circuits external resistors. 

This is why U1’s frequency output is taken from pin 7 (Discharge) instead of pin 3 (Output) to at least minimize the effects of loading from making further contributions to instability.

Nevertheless, the strong suit of this design is definitely its dynamic range.  Precision?  Not so much.

Stephen Woodward’s relationship with EDN’s DI column goes back quite a long way. Over 100 submissions have been accepted since his first contribution back in 1974.

 Related Content

• Another weird 555 ADC
• Gated 555 astable hits the ground running
• More gated 555 astable multivibrators hit the ground running
• Inverted MOSFET helps 555 oscillator ignore power supply and temp variations

 

The post Tune 555 frequency over 4 decades appeared first on EDN.

Battery energy storage systems (BESSes) are increasingly being adopted to improve efficiency and stability in power distribution networks. By storing energy from both renewable sources, such as solar and wind, and the conventional power grid, BESSes balance supply and demand, stabilizing power grids and optimizing energy use.

This article examines emerging trends in BESS applications, including advances in battery technologies, the development of hybrid energy storage systems (HESSes), and the introduction of AI-based solutions for optimization.

Battery technologies

Lithium-ion (Li-ion) is currently the main battery technology used in BESSes. Despite the use of expensive raw materials, such as lithium, cobalt, and nickel, the global average price of Li-ion battery packs has declined in 2025.

BloombergNEF reports that Li-ion battery pack prices have fallen to a new low this year, reaching $108/kWh, an 8% decrease from the previous year. The research firm attributes this decline to excess cell manufacturing capacity, economies of scale, the increasing use of lower-cost lithium-iron-phosphate (LFP) chemistries, and a deceleration in the growth of electric-vehicle sales.

Using iron phosphate as the cathode material, LFP batteries achieve high energy density, long cycle life, and good performance at high temperatures. They are often used in applications in which durability and reliable operation under adverse conditions are important, such as grid energy storage systems. However, their energy density is lower than that of traditional Li-ion batteries.

Although Li-ion batteries will continue to lead the BESS market due to their higher efficiency, longer lifespan, and deeper depth of discharge compared with alternative battery technologies, other chemistries are making progress.

Flow batteries

Long-life storage systems, capable of storing energy for eight to 10 hours or more, are suited for managing electricity demand, reducing peaks, and stabilizing power grids. In this context, “reduction-oxidation [redox] flow batteries” show great promise.

Unlike conventional Li-ion batteries, the liquid electrolytes in flow batteries are stored separately and then flow (hence the name) into the central cell, where they react in the charging and discharging phases.

Flow batteries offer several key advantages, particularly for grid applications with high shares of renewables. They enable long-duration energy storage, covering many hours, such as nighttime, when solar generation is not present. Their raw materials, such as vanadium, are generally abundant and face limited supply constraints. Material concerns are further mitigated by high recyclability and are even less significant for emerging iron-, zinc-, or organic-electrolyte technologies.

Flow batteries are also modular and compact, inherently safe due to the absence of fire risk, and highly durable, with service lifetimes of at least 20 years with minimal performance degradation.

The BESSt Company, a U.S.-based startup founded by a former Tesla engineer, has unveiled a redox flow battery technology that is claimed to achieve an energy density up to 20× higher than that of traditional, vanadium-based flow storage systems.

The novel technology relies on a zinc-polyiodide (ZnI2) electrolyte, originally developed by the U.S. Department of Energy’s Pacific Northwest National Laboratory, as well as a proprietary cell stack architecture that relies on undisclosed, Earth-abundant alloy materials sourced domestically in the U.S.

The company’s residential offering is designed with a nominal power output of 20 kW, paired with an energy storage capacity of 25 kWh, corresponding to an average operational duration of approximately five hours. For commercial and industrial applications, the proposed system is designed to scale to a power rating of 40 kW and an energy capacity of 100 kWh, enabling an average usage time of approximately 6.5 hours.

This technology (Figure 1) is well-suited for integration with solar generation and other renewable energy installations, where it can deliver long-duration energy storage without performance degradation.

Figure 1: The BESSt Company’s ZnI2 redox flow battery system (Source: The BESSt Company) Sodium-ion batteries

Sodium-ion batteries are a promising alternative to Li-ion batteries, primarily because they rely on more abundant raw materials. Sodium is widely available in nature, whereas lithium is relatively scarce and subject to supply chains that are vulnerable to price volatility and geopolitical constraints. In addition, sodium-ion batteries use aluminum as a current collector instead of copper, further reducing their overall cost.

Blue Current, a California-based company specializing in solid-state batteries, has received an $80 million Series D investment from Amazon to advance the commercialization of its silicon solid-state battery technology for stationary storage and mobility applications. The company aims to establish a pilot line for sodium-ion battery cells by 2026.

Its approach leverages Earth-abundant silicon and elastic polymer anodes, paired with fully dry electrolytes across multiple formulations optimized for both stationary energy storage and mobility. Blue Current said its fully dry chemistry can be manufactured using the same high-volume equipment employed in the production of Li-ion pouch cells.

Sodium-ion batteries can be used in stationary energy storage, solar-powered battery systems, and consumer electronics. They can be transported in a fully discharged state, making them inherently safer than Li-ion batteries, which can suffer degradation when fully discharged.

Aluminum-ion batteries

Project INNOBATT, coordinated by the Fraunhofer Institute for Integrated Systems and Device Technology (IISB), has completed a functional battery system demonstrator based on aluminum-graphite dual-ion batteries (AGDIB).

Rechargeable aluminum-ion batteries represent a low-cost and inherently non-flammable energy storage approach, relying on widely available materials such as aluminum and graphite. When natural graphite is used as the cathode, AGDIB cells reach gravimetric energy densities of up to 160 Wh/kg while delivering power densities above 9 kW/kg. The electrochemical system is optimized for high-power operation, enabling rapid charge and discharge at elevated C rates and making it suitable for applications requiring a fast dynamic response.

In the representative system-level test (Figure 2), the demonstrator combines eight AGDIB pouch cells with a wireless battery management system (BMS) derived from the open-source foxBMS platform. Secure RF communication is employed in conjunction with a high-resolution current sensor based on nitrogen-vacancy centers in diamond, enabling precise current measurement under dynamic operating conditions.

Figure 2: A detailed block diagram of the INNOBATT battery system components (Source: Elisabeth Iglhaut/Fraunhofer IISB) Li-ion battery recycling

Second-life Li-ion batteries retired from applications such as EVs often maintain a residual storage capacity and can therefore be repurposed for BESSes, supporting circular economy standards. In Europe, the EU Battery Passport—mandatory beginning in 2027 for EV, industrial, BESS (over 2 kWh), and light transport batteries—will digitally track batteries by providing a QR code with verified data on their composition, state of health, performance (efficiency, capacity), and carbon footprint.

This initiative aims to create a circular economy, improving product sustainability, transparency, and recyclability through digital records that detail information about product composition, origin, environmental impact, repair, and recycling.

HESSes

A growing area of innovation is represented by the HESS, which integrates batteries with alternative energy storage technologies, such as supercapacitors or flywheels. Batteries offer high energy density but relatively low power density, whereas flywheels and supercapacitors provide high power density for rapid energy delivery but store less energy overall.

By combining these technologies, HESSes can better balance both energy and power requirements. Such systems are well-suited for applications such as grid and microgrid stabilization, as well as renewable energy installations, particularly solar and wind power systems.

Utility provider Rocky Mountain Power (RMP) and Torus Inc., an energy storage solutions company, are collaborating on a major flywheel and BESS project in Utah. The project integrates Torus’s mechanical flywheel technology with battery systems to support grid stability, demand response, and virtual power plant applications.

Torus will deploy its Nova Spin flywheel-based energy storage system (Figure 3) as part of the project. Flywheels operate using a large, rapidly spinning cylinder enclosed within a vacuum-sealed structure. During charging, electrical energy powers a motor that accelerates the flywheel, while during discharge, the same motor operates as a generator, converting the rotational energy back into electricity. Flywheel systems offer advantages such as longer lifespans compared with most chemical batteries and reduced sensitivity to extreme temperatures.

This collaboration is part of Utah’s Operation Gigawatt initiative, which aims to expand the state’s power generation capacity over the next decade. By combining the rapid response of flywheels with the longer-duration storage of batteries, the project delivers a robust hybrid solution designed for a service life of more than 25 years while leveraging RMP’s Wattsmart Battery program to enhance grid resilience.

Figure 3: Torus Nova Spin flywheel-based energy storage (Source: Torus Inc.) AI adoption in BESSes

By utilizing its simulation and testing solution Simcenter, Siemens Digital Industries Software demonstrates how AI reinforcement learning (RL) can help develop more efficient, faster, and smarter BESSes.

The primary challenge of managing renewable energy sources, such as wind power, is determining the optimal charge and discharge timing based on dynamic variables such as real-time electricity pricing, grid load conditions, weather forecasts, and historical generation patterns.

Traditional control systems rely on simple, manually entered rules, such as storing energy when prices fall below weekly averages and discharging when prices rise. On the other hand, RL is an AI approach that trains intelligent agents through trial and error in simulated environments using historical data. For BESS applications, the RL agent learns from two years of weather patterns to develop sophisticated control strategies that provide better results than manual programming capabilities.

The RL-powered smart controller continuously processes wind speed forecasts, grid demand levels, and market prices to make informed, real-time decisions. It learns to charge batteries during periods of abundant wind generation and low prices, then discharge during demand spikes and price peaks.

The practical implementation of Siemens’s proposed approach combines system simulation tools to create digital twins of BESS infrastructure with RL training environments. The resulting controller can be deployed directly to hardware systems.

The post Emerging trends in battery energy storage systems appeared first on EDN.

Epitaxial deposition and process equipment maker Veeco Instruments Inc of Plainview, NY, USA and nanoelectronics research center imec of Leuven, Belgium have collaboratively developed a 300mm high-volume manufacturing compatible process that enables the integration of barium titanate (BaTiO3 or BTO) on a silicon photonics platform...

The India–European Union Free Trade Agreement (FTA) is poised to significantly reshape India’s electronics landscape, with industry estimates indicating it could scale exports to nearly $50 billion by 2031 across mobile phones, IT hardware, consumer electronics, and emerging technology segments—up from the current bilateral electronics trade of about $18 billion.

A Global Supplier 

“The agreement aligns directly with India’s shift from scale-led domestic manufacturing to export-oriented integration with global value chains, while promoting inclusive growth across regions and skill levels,” says Pankaj Mohindroo,  Chairman, ICEA

Emphsisisng on the significance of the FTA, he adds that in electronics, the FTA creates a credible pathway to build exports of nearly USD 50 billion by 2031 across electronic goods, including mobile phones, consumer electronics, and IT hardware. He further adds that the FTA carries the potential to exceed USD 100 billion in the following decade, anchored in manufacturing depth, job creation, innovation, and India’s emergence as a trusted global supplier.

Capitalsing a standards-driven market 

At a time when global trade and supply chains are being reshaped by uncertainty and fragmentation, the India–EU FTA underscores a shared commitment to stability, predictability, and a trusted economic partnership. As the world’s fourth- and second-largest economies respectively, India and the European Union together account for nearly 25 percent of global GDP and close to one-third of global trade. 

For India, the agreement goes beyond expanding trade volumes; it represents deeper engagement with one of the world’s most standards-driven markets, anchored in demonstrated capability, regulatory maturity, and institutional strength.

Preferential Access 

The agreement gains added significance as global value chains increasingly prioritise resilience, diversification, and trusted partnerships. Under the FTA, over 99 percent of Indian exports by value are expected to receive preferential access to the EU market, sharply improving export competitiveness. With its scale, policy predictability, and expanding industrial base, India is well-positioned as a credible manufacturing partner for European lead firms seeking long-term stability beyond traditional supply centres.

Entry of Swedish Company ‘KonveGas’ into India

Amidst this positive environment, KonveGas, a Swedish company specializing in gas storage technology, has officially announced its entry into the Indian market. The fact that European Small and Medium Enterprises (SMEs) are now directly engaging with Indian industries is seen as a direct impact of the new trade policy. 

The company has selected Delhi, Pune, and Gujarat for its initial phase of operations. These regions are India’s primary automotive and industrial hubs. Following the FTA, business opportunities in these sectors are expected to grow. The company aims to begin direct operations within the next six months.

The post India- EU FTA to Empower India’s Domestic Electronics Manufacturing Industry to reach USD 100 Billion in the Following Decade appeared first on ELE Times.