Paralleling power supplies: Many viable options, but know the tradeoffs
01.20.2017 · Articles
There are a variety of reasons why a system designer may want to consider paralleling of DC power supplies. Some of these are related to the bill of materials and logistics issues, others are focused on satisfying system current, performance or reliability objectives. On the non-design side, the ability to parallel supplies may allow a single supply model to be used singly or in combinations across a broad product line...
Diodes introduced the synchronous rectification buck converter compatible with Qualcomm Quick Charge 2.0
01.20.2017 · News
Diodes Incorporated introduced AP3171. The AP3171 is a constant voltage (CV), constant current (CC) and synchronous rectification buck converter compatible with Qualcomm Quick Charge 2.0...
«Magic» Cat Doorbell
Leonie and her family live in a building with seven other families. Like many cats, Leonie loves to explore her surroundings, and after satisfying her curiosity, she likes to return home, where it’s warm and dry and there’s food... Usually, she just needs to wait in front of the building entrance, where somebody will open the door for her and she can get to the inside staircase. Entering her apartment, however, is more difficult...
Low-cost implementation of USB Type-C
01.19.2017 · Articles
USB Type-C probably created the most interest and buzz at its inception compared to any other connector interface. This is no surprise given that the interface promises to consolidate data, power and video on a single connector. Interestingly, this appears to be history repeating itself when 20 years ago USB 1.0 allowed fragmented electronics to communicate with each other through a single-connector/cable interface – ushering in a new era of communication...
Hamamatsu adds uncooled high-speed & high-sensitivity InAsSb device (3 to 11 μm) to infrared detector lineup
01.19.2017 · News
Hamamatsu Photonics K.K. has developed an uncooled InAsSb photovoltaic detector that offers high-speed and high-sensitivity detection of infrared light in the 3 to 11 micron wavelength range. This new device extends the upper limit of sensitivity of Hamamatsu’s InAsSb detectors from 8 microns to 11 microns...
JFET-based DC/DC converter operates from 300-mV supply
01.18.2017 · Circuits
You use a JFET's self-biasing characteristics to build a dc/dc converter that operates from power sources such as solar cells, thermopiles, and single-stage fuel cells, all of which deliver less than 600 mV and sometimes as little as 300 mV...
Nyquist: The Noted Engineer (Not the Horse)
01.18.2017 · Articles
What do horse racing and engineering have in common? The answer is “Nyquist.” Nyquist, the horse, recently won the Kentucky Derby, although he didn’t win his next race, The Preakness Stakes. Nyquist, the engineer was a Swedish born American electronic engineer who made important contributions to feedback and communication theory...
Arduino-compatible shield for stepper motor driver designs
01.18.2017 · News
Rohm Semiconductor has designed an Arduino-based evaluation kit to support the evaluation of its motor driver devices: the shield plugs directly into the Arduino main board, and the EVK integrates a Rohm’s HTSSOP-B28 packaged stepper motor drive IC allowing engineers to rapidly prototype their stepper motor systems...
Circuit forms fast, portable light pulser
01.17.2017 · Circuits
The absence of a fast one-shot multivibrator in the entire TTL family, as well as the low-voltage swing and unwieldy supply requirements of ECL, drove us to exploit the fast transition times and low propagation delays of F-series gates. The application called for the implementation of a compact, portable, fast light pulser for field testing fast photomultipliers in gamma-ray astronomy work...
STMicroelectronics Extends Feature Integration and Flexibility of STM32F4 Access Lines with STM32F413/423 MCUs
Two new microcontroller lines from STMicroelectronics increase energy efficiency, flexibility, and feature integration at the high end of the STM32F4 Access Line for high-performance embedded designs. Qualified up to 125 °C, these latest STM32 devices target always-on sensor acquisition and general-purpose industrial applications, and present a robust and cost-effective upgrade from STM32F1 MCUs...