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My ±37V 1-1.5A Dual rail linear power supply.

Reddit:Electronics - Sat, 11/15/2025 - 22:32
My ±37V 1-1.5A Dual rail linear power supply.

So this is my power supply i have built. A dual rail ±37V 1-1.5A Linear power supply using lm317 and lm337 so far untill it have built a series pass voltage and current regulator for it just to get it started. Also going to add 0.33 ohm resistor between the 15000uF and 10000uF capacitors. My noise levels are low i think as can be seen in picture 1. I have a soft starter, emi filter on the AC side before transformer, filterd rectifier using small rc filters on each diode, 20d20 ntc, 15000uF, 10000uF. 5630uF +, capacitance multiplier, emi dc filter, another dc filter. Regulator, out.

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Weekly discussion, complaint, and rant thread

Reddit:Electronics - Sat, 11/15/2025 - 18:00

Open to anything, including discussions, complaints, and rants.

Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.

Reddit-wide rules do apply.

To see the newest posts, sort the comments by "new" (instead of "best" or "top").

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First Solar selects South Carolina for new US production facility

Semiconductor today - Fri, 11/14/2025 - 19:25
Cadmium telluride (CdTe) thin-film photovoltaic (PV) module maker First Solar Inc of Tempe, AZ, USA is to establish a new facility in Gaffney, Cherokee County, South Carolina, to onshore final production processes for Series 6 Plus modules initiated by the company’s international fleet. The firm expects to spend about $330m to establish the new facility, which is scheduled to begin commercial operation in second-half 2026. The facility is forecasted to create more than 600 new jobs with an average manufacturing salary of $74,000 per year, approximately twice the per capita income in Cherokee County...

💝 Гала-концерт КПІ Арт

Новини - Fri, 11/14/2025 - 18:58
💝 Гала-концерт КПІ Арт
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kpi пт, 11/14/2025 - 18:58
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Найбільша творча подія року в КПІ ім. Ігоря Сікорського вже наступного тижня! Запрошуємо на фінал КПІ Арт, під час якого можна буде переглянути виступи 20 фіналістів з різних факультетів у 5 категоріях:

Пам'яті Нагірного Ярослава Павловича

Новини - Fri, 11/14/2025 - 18:51
Пам'яті Нагірного Ярослава Павловича
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kpi пт, 11/14/2025 - 18:51
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Надійшла інформація про загибель на війні Нагірного Ярослава Павловича (13.05.1990 – 16.09.2024)...

Ярослав випускник Факультету зварювання 2015 року (кафедра наразі у складі Навчально-наукового інституту матеріалознавства та зварювання імені Є. О. Патона).

💛💙 Запрошуємо на виставку «Музей у тривожній валізі»

Новини - Fri, 11/14/2025 - 18:45
💛💙 Запрошуємо на виставку «Музей у тривожній валізі»
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kpi пт, 11/14/2025 - 18:45
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Запрошуємо на виставку «Музей у тривожній валізі» — проєкт Луганського обласного краєзнавчого музею продовжує міжнародний діалог між 🇺🇦 Україною та 🇨🇭 Швейцарією у сфері збереження культурної спадщини в умовах війни.

The role of motion sensors in the industrial market

EDN Network - Fri, 11/14/2025 - 16:00
The ISM6HG256X IMU sensor.

The future of the industrial market is being established by groundbreaking technologies that promise to reveal unique potential and redefine what is possible. These innovations range from collaborative robots (cobots) and artificial intelligence to the internet of things, digital twins, and cloud computing.

Cobots are not just tools but partners, empowering human workers to achieve greater creativity and productivity together. AI is ushering industries into a new era of intelligence, where data-driven insights accelerate innovation and transform challenges into opportunities.

The IoT is weaving vast, interconnected machines and systems that enable seamless communication and real-time responsiveness like never before. Digital twins bring imagination to life by creating virtual environments where ideas can be tested, refined, and perfected before they touch reality. Cloud computing serves as the backbone of this revolution, offering limitless power and connectivity to drive brave visions forward.

Together, these technologies are inspiring a new industrial renaissance, where innovation, sustainability, and human initiative converge to build a smarter, more resilient world.

The role of sensors

Sensors are the silent leaders driving the industrial market’s transformation into a realm of intelligence and possibility. Serving as the “eyes and ears” of smart factories, these devices unlock the power of real-time data, enabling industries to look beyond the surface and anticipate the future. By continuously sensing pressure, temperature, position, vibration, and more, sensors enable workers to be continuously monitored and bring machines to life, turning them into connected, responsive entities within the industrial IoT (IIoT).

This flow of information accelerates innovation, enables predictive maintenance, and enhances safety. Sensors do not just monitor; they usher in a new era where efficiency meets sustainability, where every process is optimized, and where industries embrace change with confidence. In this industrial landscape, sensors are the catalysts that transform raw data into insights for smarter, faster, and more resilient industries.

Challenges for industrial motion sensing applications

Sensors in industrial environments face several significant challenges. They must operate continuously for years on battery power without failure. Additionally, it is crucial that they capture every critical event to ensure no incidents are missed. Sensors must provide accurate and precise tracking to manage processes effectively. Simultaneously, they need to be compact yet powerful, integrating multiple functions into a small device.

Most importantly, sensors must deliver reliable tracking and data collection in any environment—whether harsh, noisy, or complex—ensuring consistent performance regardless of external conditions. Overcoming these challenges is essential to making factories smarter and more efficient through connected technologies, such as the IIoT and MEMS motion sensors.

MEMS inertial sensors are essential devices that detect motion by measuring accelerations, vibrations, and angular rates, ensuring important events are never missed in an industrial environment. Customers need these motion sensors to work efficiently while saving power and to keep performing reliably even in tough conditions, such as high temperatures.

However, there are challenges to overcome. Sometimes sensors can become overwhelmed, causing them to miss important impact or vibration details. Using multiple sensors to cover different motion ranges can be complicated, and managing power consumption in an IIoT node is also a concern.

There is a tradeoff between accuracy and range: Sensors that measure small movements are very precise but can’t handle strong impacts, while those that detect strong impacts are less accurate. In industrial settings, sensors must be tough enough to handle harsh environments while still providing reliable and accurate data. Solving these challenges is key to making MEMS sensors more effective in many applications.

How the new ST industrial IMU can help

Inertial measurement units (IMUs) typically integrate accelerometers to measure linear acceleration and gyroscopes to detect angular velocity. These devices often deliver space and cost savings while reducing design complexity.

One example is ST’s new ISM6HG256X intelligent IMU. This MEMS sensor is the industry’s first IMU for the industrial market to integrate high-g and low-g sensing into a single package with advanced features such as sensor fusion and edge processing.

The ISM6HG256X addresses key industrial market challenges by integrating a single mechanical structure for an accelerometer with a wide dynamic range capable of capturing both low-g vibrations (16 g) and high-g shocks (256 g) and a gyroscope, effectively eliminating the need for multiple sensors and simplifying system architecture. This compact device leverages embedded edge processing and adaptive self-configurability to optimize performance while significantly reducing power consumption, thereby extending battery life.

Engineered to withstand harsh industrial environments, the IMU reliably operates at temperatures up to 105°C, ensuring consistent accuracy and durability under demanding conditions. Supporting Industry 5.0 initiatives, the sensor’s advanced sensing architecture and edge processing capabilities enable smarter, more autonomous industrial systems that drive innovation.

Unlocking smarter tracking and safety, this integrated MEMS motion sensor is designed to meet the demanding needs of the industrial sector. It enables real-time asset tracking for logistics and shipping, providing up-to-the-minute information on location, status, and potential damage. It also enhances worker safety through wearable devices that detect falls and impacts, instantly triggering emergency alerts to protect personnel.

Additionally, it supports condition monitoring by accurately tracking vibration, shock, and precise motion of industrial equipment, helping to prevent downtime and costly failures. In factory automation, the solution detects unusual vibrations or impacts in robotic systems instantly, ensuring smooth and reliable operation. By combining tracking, monitoring, and protection into one component, industrial operations can achieve higher efficiency, safety, and reliability with streamlined system design.

STMicroelectronics ISM6HG256X IMU, an integrated MEMS motion sensor.The ISM6HG256X IMU sensor combines simultaneous low-g (±16 g) and high-g (±256 g) acceleration detection with a high-performance precision gyroscope for angular rate measurement. (Source: STMicroelectronics)

As the industrial market landscape evolves toward greater flexibility, sustainability, and human-centered innovation, industrial IMU solutions are aligned with the key drivers shaping the future of the industrial market. IMUs can enable precise motion tracking, reliable condition monitoring, and energy-efficient edge processing while supporting the decentralization of production and enhancing resilience and agility within supply chains.

Additionally, the integration of advanced sensing technologies contributes to sustainability goals by optimizing resource use and minimizing waste. As manufacturers increasingly adopt AI-driven collaboration and advanced technology integration, IMU solutions provide the critical data and reliability needed to drive innovation, customization, and continuous improvement across the industry.

The post The role of motion sensors in the industrial market appeared first on EDN.

Lightning and trees

EDN Network - Fri, 11/14/2025 - 15:00

We’ve looked at lightning issues before. Please see “Ground strikes and lightning protection of buried cables.”

This headline below was found online at the URL hyperlinked here.

Recent headline from the local paper. Source: ABC7NY

This ABC NY article describes how a teenage boy tried to take refuge from the rain in a thunderstorm by getting under the canopy of a tree. In that article, we find this quote: “The teen had no way of knowing that the tree would be hit by lightning.”

This quote, apparently the opinion of the article’s author, is absolutely incorrect. It is total and unforgivable rubbish.

Even when I was knee-high to Jiminy Cricket, I was told over and over and over by my parents NEVER to try to get away from rain by hiding under a tree. Any tree that you come across will have its leaves reaching way up into the air, and those wet leaves are a prime target for a lightning strike, as illustrated in this screenshot:

Conceptual image of lightning striking tree. Source: Stockvault

Somebody didn’t impart this basic safety lesson to this teenager. It is miraculous that this teenager survived the event. The above article cites second-degree burns, but a radio item that I heard about this incident also cites nerve damage and a great deal of lingering pain.

Recovery is expected.

John Dunn is an electronics consultant, and a graduate of The Polytechnic Institute of Brooklyn (BSEE) and of New York University (MSEE).

 Related Content

The post Lightning and trees appeared first on EDN.

Rohde & Schwarz, together with Samsung, first to validate 3GPP NR-NTN conformance across RF, RRM and PCT

ELE Times - Fri, 11/14/2025 - 13:32

Rohde & Schwarz and Samsung are collaborating to bring 5G NR-NTN to market. Both companies have worked together to enable the validation of the first 5G-based New Radio non-terrestrial networks (NR-NTN) test cases in accordance with the 3GPP test specifications for RF (Radio Frequency), RRM (Radio Resource Management) and PCT (Protocol Conformance Testing) using conformance test solutions from Rohde & Schwarz. The validated test cases, as defined by PTCRB (PCS Type Certification Review Board) RFT 555 (Request for Testing), were conducted on the R&S TS8980 Conformance Test Platform, the R&S TS-RRM and the CMX500 in frequency range 1 (FR1) verifying Samsung’s latest NR-NTN chipset as device under test (DUT).

In preparation for the commercial rollout of a new mobile technology, 3GPP conformance testing is essential for ensuring that devices and networks comply with global standards. This is particularly true for 5G NR-NTN, set to bring reliable satellite-based connectivity to remote areas. However, NR-NTN testing presents challenges that extend beyond those encountered in traditional terrestrial networks, primarily due to the vastly different operating environment and the dynamic nature of satellite-based communication.

Goce Talaganov, Vice President of Mobile Radio Testers at Rohde & Schwarz, said: “Conformance testing – covering RF, RRM and PCT – is critical for a positive user experience and a stable mobile ecosystem. Rohde & Schwarz has consistently been leading edge in conformance testing, providing its comprehensive solutions across all three domains. We’re proud to partner with industry leaders like Samsung who rely on our solutions to ensure device conformance, to enable tomorrow’s connectivity.”

The post Rohde & Schwarz, together with Samsung, first to validate 3GPP NR-NTN conformance across RF, RRM and PCT appeared first on ELE Times.

Олексій Роготченко з ВПІ: "У своїй книзі я намагався реабілітувати незаслужено забутих митців"

Новини - Fri, 11/14/2025 - 10:55
Олексій Роготченко з ВПІ: "У своїй книзі я намагався реабілітувати незаслужено забутих митців"
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Інформація КП пт, 11/14/2025 - 10:55
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Приводом для бесіди з доктором мистецтвознавства, членом-кореспондентом Інституту проблем сучасного мистецтва Національної академії мистецтв України професором кафедри графіки Видавничо-поліграфічного інституту КПІ ім. Ігоря Сікорського Олексієм Роготченком став нещодавній вихід у світ його книги "Шістдесят тоталітарних років: зображальне мистецтво України".

I2C Sensors Set

Reddit:Electronics - Fri, 11/14/2025 - 03:26
I2C Sensors Set

I always wanted to create my very own weather station which is capable of measuring as much things as possible. For a start decided to create a set of sensors for temperature, pressure, humidity, and light. There are plenty of options for these, but I chose digital sensors with I2C interface. It leaves analog part to sensor vendors and allows to use them through a common interface both from hardware and software levels. Check out linked project page. It contains schematic, PCB design, simple test code for RPi Zero 2 W, and a tool to visualize measurements. The set requires 1.8-3.3V (haven’t tested 1.8V yet), I2C connection, and provides a couple interrupt lines. I have a bunch of MCUs so now planning to create more code examples - for RPi Pico, ESP, STM.

submitted by /u/WeekSpender
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🎥 Відкрито MacPaw AI Lab у Bilka Space в КПІ ім. Ігоря Сікорського

Новини - Thu, 11/13/2025 - 22:32
🎥 Відкрито MacPaw AI Lab у Bilka Space в КПІ ім. Ігоря Сікорського
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kpi чт, 11/13/2025 - 22:32
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📌 260 м² креативу та нетворкінгу! MacPaw AI Lab у Bilka Space в КПІ ім. Ігоря Сікорського офіційно відкрито! Це простір для досліджень, розвитку та співпраці у сфері AI.

10BASE-T1S endpoints simplify zonal networks

EDN Network - Thu, 11/13/2025 - 19:55

Microchip’s LAN866x 10BASE-T1S endpoint devices use the Remote Control Protocol (RCP) to extend Ethernet connectivity in in-vehicle networks. The endpoints enable centralized control of edge nodes for data streaming and device management, while the 10BASE-T1S multidrop topology supports an all-Ethernet zonal architecture.

LAN866X endpoints serve as bridges that translate Ethernet packets directly to local interfaces for lighting control, audio transmission, and sensor or actuator management over the network. This approach eliminates node-specific software programming, simplifying system architecture and reducing both hardware and engineering costs.

The RCP-enabled endpoint devices join Microchip’s Single Pair Ethernet (SPE) line of transceivers, bridges, switches, and development tools. These components enable reliable, high-speed data transmission over a single twisted pair cable supporting 10BASE-T1S, 100BASE-T1, and 1000BASE-T1.

The LAN8660 control, LAN8661 lighting, and LAN8662 audio endpoints are available in limited sampling. For more information about Microchip’s automotive Ethernet products, including these endpoints, click here.

Microchip Technology 

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Development kit enables low-power presence detection

EDN Network - Thu, 11/13/2025 - 19:55

SPARK’s Presence Detection Kit (PDK), powered by the SR1120 LE-UWB transceiver, delivers low-power, robust sensing for connected devices. Its low-energy ultra-wideband (LE-UWB) technology helps designers overcome the high power consumption and interference challenges of Bluetooth, Wi-Fi, and conventional UWB.

LE-UWB supports unidirectional and bidirectional communication, ultra-low-power beaconing with configurable detection zones, and line-of-sight Time-of-Flight (ToF) measurement for precise proximity and distance sensing. SPARK reports that its LE-UWB technology consumes over 10× less power (30 µW at 4 Hz) than Bluetooth/BLE beaconing and delivers more than 20× higher power efficiency than standard UWB.

SPARK provides an energy-optimized firmware stack for presence detection, including APIs for beaconing, ranging, data transmission, and OTA firmware updates. Reference hardware kits, demo applications, and GUIs allow engineers to evaluate detection performance, adjust detection zones, and accelerate prototyping. The PDK hardware is selected to optimize performance, power, and cost, and integrates across a broad range of MCUs and software architectures.

Presence detection kits are available now. For details on board and kit configurations, contact NA_sales@sparkmicro.com.

SPARK Microsystems 

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High-density ATE supplies boost test capabilities

EDN Network - Thu, 11/13/2025 - 19:55

Keysight has expanded its power test portfolio with three families of ATE system power supplies spanning 1.5 kW to 12 kW. The RP5900 series of regenerative DC power supplies, EL4900 series of regenerative DC electronic loads, and DP5700 series of system DC power supplies deliver high density, bidirectional, and regenerative capabilities, paired with intelligent automation software for efficient design validation.

This range enables engineers to validate complex, multi-kilowatt devices with greater precision and repeatability while using less space and energy. Supplies deliver up to 6 kW in 1U or 12 kW in 2U, with full regenerative capability, offering two to three times more channels in the same footprint as previous systems.

Keysight’s automated power suite lets engineers run complex tests—such as long-duration cycling, state-of-charge battery emulation, and transient replication—consistently and efficiently. It includes removable SD memory for secure workflows between classified and open labs, software that complies with NIST SP800-171 SSDF standards, and regenerative operation that returns energy to the grid, reducing waste and supporting sustainability.

For more information about each of the three high-density power series, click here.

Keysight Technologies 

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Partners bring centimeter-level GNSS to IoT

EDN Network - Thu, 11/13/2025 - 19:55

Quectel is bundling its Real-Time Kinematic (RTK)-capable GNSS modules and antennas with Swift Navigation’s Skylark RTK correction service. Together, the hardware and service enable centimeter-level positioning accuracy for mass-market IoT applications and streamline RTK adoption.

Partnering with Swift allows Quectel to deliver optimized solutions for specific applications, helping equipment manufacturers navigate the complexities of RTK adoption. The Quectel RTK Correction Solution supports a wide range of use cases, including robotics, automotive, micro-mobility, precision agriculture, surveying, and mining. Swift’s Skylark provides multi-constellation, multi-frequency RTK corrections with broad geographic coverage across North America, Europe, and Asia-Pacific.

The RTK global offering ensures consistent compatibility and performance across regions, supporting quad–band GNSS RTK modules such as the LG290P, LG580P, and LG680P, as well as the dual-band LC29H series. These modules maintain exceptional RTK accuracy even in challenging environments. Quectel complements its hardware with full-stack services, including engineering support, precision antenna provisioning, and tuning.

Quectel

Swift Navigation 

The post Partners bring centimeter-level GNSS to IoT appeared first on EDN.

Multiprotocol firmware streamlines LoRa IoT design

EDN Network - Thu, 11/13/2025 - 19:55

Semtech’s Unified Software Platform (USP) for its LoRa Plus transceivers enables multiprotocol IoT deployments on a single hardware platform. It manages LoRaWAN, Wireless M-Bus, Wi-SUN FSK, and proprietary protocols, eliminating the need for protocol-specific hardware variants.

LoRa Plus LR20xx transceivers integrate 4th-generation LoRa IP that supports both terrestrial and non-terrestrial networks across sub-GHz, 2.4-GHz ISM, and licensed S-bands. The LoRa USP provides a unified firmware ecosystem for multiprotocol operation on various MCU platforms through open-source environments such as Zephyr. It also offers backward-compatible build options for Gen 2 SX126x and Gen 3 LR11xx devices.

LoRa USP succeeds LoRa Basics Modem as Semtech’s multiprotocol firmware platform. Both platforms share the same set of APIs, ensuring a seamless transition to the USP version. USP supports both bare-metal and Zephyr OS implementations.

LoRa USP product page 

Semtech

The post Multiprotocol firmware streamlines LoRa IoT design appeared first on EDN.

🚨 Запрошуємо на XVIII відкриту студентську олімпіаду з теорії електронних кіл “ТЕК’2025”

Новини - Thu, 11/13/2025 - 16:25
🚨 Запрошуємо на XVIII відкриту студентську олімпіаду з теорії електронних кіл “ТЕК’2025”
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kpi чт, 11/13/2025 - 16:25
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Запрошуємо на XVIII відкриту студентську олімпіаду з теорії електронних кіл “ТЕК’2025”, яка проводиться на вшанування пам’яті профеcора Сігорського Віталія Петровича.

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