May 17, 2022 Volume 18 Issue 19

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Circuit breakers have magnetic module option

SCHURTER has upgraded its 2-pole classic TA35 and TA36 thermal circuit breaker models with an additional, optional magnetic module. From now on, no additional fuse is required when using a thermal-magnetic type. Depending on the application, the magnetic modules are available either with a slow- or a fast-acting characteristic. Both models are designed for snap-in mounting and with finely graduated rated currents. A variety of colors and lighting options make the designer's choice easier.
Learn more.


All about magnetic rotary encoder

The precision and reliability offered by modern rotary encoders are essential in many product categories. These include robotics, machine tools, printing presses, motion control systems, medical equipment, aerospace, gaming and entertainment, and automotive. Learn all about magnetic rotary encoders -- and important developments in the technology's future.
Read the full Avnet article.


High-res image sensor for automotive ADAS and AD

OMNIVISION has expanded its TheiaCel™ product portfolio with a new OX12A10 12-MP high-res image sensor for automotive cameras. This sensor, with the highest resolution in its line, improves automotive safety by eliminating LED flicker regardless of lighting conditions. It is ideal for high-performance front machine vision cameras for advanced driver assistance systems (ADAS) and autonomous driving (AD).
Learn more.


Durable, full redundant angle sensors for automotive and off-highway

Novotechnik's new RSK-3200 Series angle sensors are designed for harsh automotive and off-highway applications. Measurement range is 0 to 360 degrees, and the temperature range is -40 to 125 C. This unit's built-in coupling accepts D-Shaft, with shaft customization available. The sensors are sealed to IP 67 or IP 69k depending on version. RSK-3200 Series sensors are extremely durable with MTTF of 285 years for each of the two channels! Applications include throttle control and EGR valves, transmission gear position, and accelerator position. Very competitive pricing.
Learn more.


Great design: Handle with integrated lighting/signaling

Signaling and indicator lights, switches, and buttons -- elements that hardly any machine can do without. The new JW Winco cabinet U-handle EN 6284 integrates all these functions into a single, compact element. The new U-handle is designed to enhance the operation of systems and machines. It features an integrated button and a large, colored, backlit area on the handle. These elements can be used individually or in combination, providing a versatile tool for system control and process monitoring that can be seen from across the room.
Learn more.


World's most popular 3D multisensor metrology systems get next-gen addition

Offered in two benchtop and two floor-model options to handle nearly any size part, the SmartScope M-Series systems from Optical Gaging Products usher in the next generation of enhancements in image accuracy, optics, and throughput to the world's most popular 3D multisensor video measurement platform. SmartScope M-Series features fixed optics with a 20-megapixel camera and proprietary Virtual Zoom, combined with advanced sensors, illumination, and accessories, to achieve class-leading optical measurement speeds. Lots more features.
Learn more.


SOLIDWORKS Tips: 3 easy ways to focus on your model

SOLIDWORKS Elite Applications Engineer Alin Vargatu demonstrates his top tips for focusing on your model: finding planes the easy way inside your assembly with the Q key, breadcrumbs, and a better way to use the component preview window. Very helpful. Lots more tips on the SOLIDWORKS YouTube channel.
View the video.


Push-pull transformer drivers for automotive power supplies

Nexperia's AEC-Q100 qualified, push-pull transformer drivers (NXF6501-Q100, NXF6505A-Q100, and NXF6505B-Q100) enable the design of small, low-noise, and low-EMI isolated power supplies for a range of automotive applications such as traction inverters and motor control, DC-DC converters, battery management systems, and on-board chargers in EVs. Also suitable for industrial applications such as telecommunications, medical, instrumentation, and automation equipment.
Learn more.


Mini linear position sensor for drones, robots, aero, more

H. G. Schaevitz LLC, Alliance Sensors Group is now offering a miniature, lightweight LZ SERIES linear position sensor product line utilizing LVIT Technology™. These sensors are designed for tight spaces that require excellent stroke-to-length ratio. They are contactless devices for use by drones, OEMs, aerospace, robotics, factory automation, or assembly machinery applications where precision in position sensing is crucial.
Learn all the specs.


What is a Heatric Printed Circuit Heat Exchanger?

According to Parker Hannifin, "A Printed Circuit Heat Exchanger is a robust, corrosion-resistant, high-integrity plate-type heat exchanger manufactured using diffusion bonding." Learn about the technology and why Heatric, a Parker brand, "can manufacture a unit up to 85% smaller and lighter than traditional technologies such as shell and tube heat exchangers."
Read this informative Parker blog.


Tech Tip: Mastering sheet metal bend calculations in Onshape

Mastering bend calculations in sheet metal design is a key skill that can impact the accuracy and manufactur-ability of your designs significantly. Explore the various options available to become a pro in this Onshape Tech Tip: K Factor, bend allowance, and bend deduction, with guidance on when each should be used. You may learn something even if you don't use this software.
Read the Onshape blog.


Seifert thermoelectric enclosure coolers from AutomationDirect beat the heat

Automation-Direct has added new high-quality and efficient stainless steel Seifert 340 BTU/H thermoelectric coolers with 120-V and 230-V power options. Thermoelectric coolers from Seifert use the Peltier Effect to create a temperature difference between the internal and ambient heat sinks, making internal air cooler while dissipating heat into the external environment. Fans assist the convective heat transfer from the heat sinks, which are optimized for maximum flow.
Learn more.


Raspberry Pi Pico 2: Microcontroller board with 2x flash memory

Raspberry Pi's Pico low-cost, high-performance microcontroller board with flexible digital interfaces is now being offered as a full second-generation product, complete with twice the on-board flash memory, higher performance, lower power consumption, and greater security.
Read the full article.


Free-Core vs. Spring-Loaded LVDT position sensors

Linear Variable Differential Transformers are electro-mechanical devices used in many industrial applications to measure the displacement or position of an object. They convert the linear position or motion of a measured object into an electrical output that is displayed on a local readout or input into a programmable logic controller as part of an automated process control system. LVDTs come in two core configurations -- free-core and spring-loaded -- but do you know what the differences are?
Read the full NewTek Sensor Solutions article.


New sensor listens to fuel for optimum marine diesel engine performance

Condition monitoring expert CM Technologies has added a fuel injection acoustic emission sensor to its proprietary PREMET X range of two- and four-stroke diesel engine performance indicators for marine use. The device allows engineers to monitor the acoustic signature of a diesel engine's fuel injection system to detect any problems with fuel injectors, nozzles, and pumps.
Read the full article.


NIST finds wireless performance consistent across 5G millimeter-wave bands

Settling a key dispute in the wireless communications field, researchers at the National Institute of Standards and Technology (NIST) found that transmission performance is consistent across different bands of the millimeter-wave (mmWave) spectrum targeted for high-speed, data-rich 5G systems.

Wireless systems are moving to the mmWave spectrum at 10 to 100 gigahertz (GHz), above crowded cellular frequencies as well as early 5G systems around 3 GHz. System operators tend to prefer lower bands of the new mmWave spectrum. One reason is that they are influenced by a formula that says more signals are lost at higher frequencies due to smaller wavelengths, resulting in a smaller useful antenna area. But until now, measurements of this effect by many organizations have disagreed over whether this is true.

The colored lines are reconstructions of measured paths of mm-wave signals between a transmitter (not visible) and receiver (lower middle) in an NIST industrial control room. Each path is precisely characterized in terms of length and angle to the receiver. These paths are all secondary, meaning reflected or diffracted signals. [Credit: NIST]

 

 

 

 

NIST researchers developed a new method to measure frequency effects, using the 26.5- to 40-GHz band as a target example. After extensive study in the laboratory and two real-world environments, NIST results confirmed that the main signal path -- over a clear "line of sight" between transmitter and receiver -- does not vary by frequency, a generally accepted thesis for traditional wireless systems, but until now not proven for the mmWave spectrum. The results are described in a new paper.

The team also found that signal losses in secondary paths -- where transmissions are reflected, bent, or diffused into clusters of reflections -- can vary somewhat by frequency, depending on the type of path. Reflective paths, which are the second strongest and critical for maintaining connectivity, lost only a little signal strength at higher frequencies. The weaker bent and diffuse paths lost a bit more. Until now, the effects of frequency on this so-called multipath were unknown.

"This work may serve to demyth many misconceptions about propagation about higher frequencies in 5G and 6G," NIST electrical engineer Camillo Gentile said. "In short, while performance will be worse at higher frequencies, the drop in performance is incremental. So we do expect the deployment at 5G and eventually at 6G to be successful."

The NIST method emphasizes innovative measurement procedures and enhanced equipment calibration to make sure only the transmission channel is measured. The researchers used NIST's SAMURAI (Synthetic Aperture Measurement UnceRtainty for Angle of Incidence) channel sounder, which supports design and repeatable testing of 5G mmWave devices with unprecedented accuracy across a wide range of signal frequencies and scenarios. The NIST system is unique in that antenna beams can be steered in any direction for precise angle-of-arrival estimates.

NIST's main innovations in the new study, as discussed in the paper, were calibration procedures to remove the effects of channel sounder equipment from the measurements, extension of an existing algorithm to determine from a single measurement how individual paths vary by frequency, and studies in an industrial control center and a conference room to classify the types of paths involved and determine any frequency effects.

Source: NIST

Published May 2022

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