August 02, 2022 Volume 18 Issue 29

Electrical/Electronic News & Products

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Protect battery packs against overcurrent and overcharging

Littelfuse has announced the new ITV4030, a series of 22-A, three-terminal, surface-mountable Li-ion battery protectors ideal for use in a wide range of data communications interfaces for consumer electronics including tablets, robotic appliances, and power tools. These 4- x 3-mm devices protect battery packs against overcurrent and overcharging (overvoltage) conditions. The innovative design uses embedded fuse and heater elements that provide fast response and reliable performance to interrupt the charging or discharging circuit before the battery pack becomes overcharged or overheated.
Learn more.


Raspberry Pi Pico W adds Wi-Fi to popular microcontroller board

Raspberry Pi launched the $4 Pico microcontroller board in January of last year. It has sold almost 2 million units and proven to be a great tool for commercial, industrial, and maker applications, but it still lacks one important element: wireless connectivity. That is about to change.
Read the full article.


Cool Tools: The oscilloscope that feels like a tablet

Tektronix says, "Get ready to change the way you work forever!" Introducing the Tektronix 2 Series Mixed Signal Oscilloscope (MSO) -- the only full-featured bench oscilloscope that works where you work. It weighs less than 4 lb, is just 1.5-in. thick, and can accommodate an optional battery pack for up to 8 hours of unplugged power.
View the video.


Smart contactors with CAN bus

Sensata Technologies has announced the availability of the new GXC and MXC series of Smart-Tactor contactors with CAN bus communication, which provide valuable data for improved system performance, reliability, and diagnostics in military, battery system, energy storage, commercial vehicle, and industrial applications. This new series of CAN bus-enabled contactors are easily integrated and simplify data acquisition, making them ideal for data logging, telematics, and predictive maintenance.
Learn more.


What can you do with touchless magnetic angle sensors?

Novotechnik has put together a really informative video highlighting real-world applications for their RFC, RFE, and RSA Series touchless magnetic angle sensors. You may be surprised at the variety of off-highway, marine, material handling, and industrial uses. You'll learn how they work (using a Hall effect microprocessor to detect position) and their key advantages, including eliminated wear and tear on these non-mechanical components. We love when manufacturers provide such useful examples.
View the video.


Slimmest enclosure air conditioner on the market!

Seifert's SlimLine Series of enclosure air conditioners integrate unique technologies -- maximum power-to-size ratio, mounting of merely 4.5 inches inside-cabinet-depth -- making the SlimLine Series the slimmest air conditioner in the market. Cooling capacity: 1,090 to 5,120 Btu/hr.
Learn more.


Radiation-hardened GaN transistor for space applications

EPC has just introduced the EPC7018 radiation-hardened GaN FET. With higher breakdown strength, lower gate charge, lower switching losses, better thermal conductivity, and very low on-resistance, power devices based on GaN significantly outperform silicon-based devices. They enable higher switching frequencies resulting in higher power densities, higher efficiencies, and more compact and lighter-weight circuitry for critical spaceborne missions, including DC-DC power, motor drives, lidar, deep probes, and ion thrusters.
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Low-cost motion control: CLICK PLUS PLCs

Automation-Direct has released the new CLICK PLC programming software version 3.30, which allows any CLICK PLUS CPU to be configured as a 3-axis PTO/PWM motion controller. 100-kHz high-speed inputs and outputs are offered with any DC option slot I/O module placed in slot 0 of the CPU. With this module, CLICK PLUS PLCs can easily perform velocity moves, homing commands, or interpolated positioning. Six CPUs available starting at less than 100 bucks.
Learn more.


EdgeCool cools computer servers in the rack

The new EdgeCool system for rack-mounted computer servers revolutionizes IT cooling by transforming server racks into their own portable, energy-saving server rooms. The patented split system from DENSO Products and Services Americas is made up of a condenser and an evaporator that fit easily into almost any open or sealed server rack. The self-contained equipment eliminates the need for more floor space, a dedicated server room, or disruptive and costly building modifications.
Learn more.


Do-it-yourself high-performance aluminum cold plates

New high-performance aluminum cold plates from Advanced Thermal Solutions (ATS) let engineers safely drill holes in a mounting pattern that matches the specific connection points of hot devices that need cooling, providing lots of customization options. ATS says its cold plates have been demonstrated to provide more than 30% better thermal performance than other commercially available cold plates.
Learn more.


Long-range retro-reflective photoelectric sensors overcome interference

The new 36 series of sensors from Leuze are suitable for demanding requirements in intralogistics, packaging systems, and the automotive industry. They detect objects with different optical properties -- even at a great distance or when sources of interference are present (such as film-wrapped pallets, vibration, or ambient lighting). Available as sensors with background suppression (range to 2.5 m), as retro-reflective photoelectric sensors (up to 17 m), or as throughbeam photoelectric sensors (up to 80 m).
Learn more.


Calculator simplifies cabinet cooling system selection

EXAIR Cabinet Cooler Systems provide a comprehensive solution for cooling and purging electronic cabinets and come in a litany of different cooling capacities, NEMA ratings, and classifications. With the breadth of available options, choosing the best Cabinet Cooler for a specific environment can be a tedious task and depends on a few key factors. With EXAIR's new Cabinet Cooler Calculator, it's easy to find the ideal Cabinet Cooler System for any specific application.
Learn more.


New low-voltage compact LED bulbs

LEDtronics has released new additions to its industry-leading offering of intermediate-based LED bulbs that fit in enclosed fixtures, featuring low voltage, 160-degree spherical illumination, low power consumption, and high lumen intensity. The B605SM series is available either as a 14-VAC/VDC bulb that replaces incandescent lamps 67, 89, 97, 98, 1095, 1155, and 5008, or as a 28-VAC/VDC bulb that replaces incandescents 71, 303, 623, and 1251. These bulbs are a perfect fit in applications such as machine status or gaming candle indicators, indicator lights for instrumentation, panel-mount pilot lights, accent lighting, and automotive.
Learn more.


Neat. How to prototype 4x machine vision applications on one small embedded system quickly

Teledyne FLIR has put together a neat article that shows how to prototype a machine vision system quickly that runs four simultaneous applications, three of which use deep learning. The system uses the Quartet Embedded Solution for TX2, a customized carrier board that enables easy integration of up to four USB3 cameras at full bandwidth. The example traffic systems application includes license plate recognition, vehicle type categorization, vehicle color classification, and seeing through a windshield -- all simultaneously. Very cool.
Read the Teledyne FLIR application article.


New Gefran inclination sensors use MEMS technology

Automation-Direct has added Gefran inclination sensors to their growing lineup of position transducers. Gefran sensors use cutting-edge MEMS technology (micro-electromechanical devices integrated onto a single silicon chip) to provide reliable and precise tilt angle measurement with respect to gravity. These sensors are rugged and suitable for the harshest environments. M12 quick-disconnect models are fully redundant, having two sensors in one housing.
Learn more.


Physicists multiply frequencies without special circuitry

A new discovery by physicists at Martin Luther University Halle-Wittenberg (MLU) in Germany could make certain components in computers and smartphones obsolete.

The team has succeeded in directly converting frequencies to higher ranges in a common magnetic material without the need for additional components. Frequency multiplication is a fundamental process in modern electronics. The team reports on its research in the March 2022 issue of Science.

Researchers Georg Woltersdorf and Chris K├Ârner in the MLU lab. [Credit: Uni Halle/Markus Scholz]

 

 

Digital technologies and devices are already responsible for about 10% of global electricity consumption, and the trend is rising sharply. "It is therefore necessary to develop more efficient components for information processing," says Professor Georg Woltersdorf, a physicist from MLU.

Non-linear electronic circuits are typically used to generate the high-frequency gigahertz signals needed to operate today's devices. The team at MLU has found a way to do this within a magnetic material without the electronic components that are usually used. Instead, the magnetization is excited by a low-frequency megahertz source.

Using the newly discovered effect, the source generates several frequency components, each of which is a multiple of the excitation frequency. These cover a range of six octaves and reach up to several gigahertz. "This is like hitting the lowest note on a piano while also hearing the corresponding harmonic tones of the higher octaves," explains Woltersdorf.

The surprising effect of frequency multiplication is explained by synchronized switching of the dynamic magnetization on a micron scale. "Different areas do not switch at the same time. Instead, they are triggered by adjacent areas, just like in a falling row of dominoes," explains first author Chris Körner from the Institute of Physics at MLU.

The discovery could help make digital technologies more energy efficient in the future, and it is also important for new applications. Today's microelectronics use electron charges as information carriers. A major disadvantage of this method is that the electric charge transport releases heat and, therefore, requires a lot of energy. Spin electronics could provide a promising solution. In addition to using the electron's charge, it also uses its magnetic moment, or so-called spin. Its properties open the possibility to significantly improve energy efficiency. The newly discovered effect could enable space-saving and efficient frequency sources for spin electronics in the gigahertz range. The researchers name all-magnetic mixers or on-chip GHz sources as possible applications.

See "Frequency multiplication by collective nanoscale spin-wave dynamics" in Science.

Source: Martin Luther University Halle-Wittenberg

Published August 2022

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