Skip navigation
1 2 3 Previous

Power & Energy

80 posts
General Electric’s department of renewable energy is working on a new wind turbine that will contribute to reducing the cost of electricity. Comparison chart of the Haliade-X to other important buildings. (Image via GE)   The US firm General Electric (GE) has a department of Renewable energy that puts the company among the leading providers of wind turbines. With more than 35,000 wind turbines around the globe, GE’s renewable energy department does not just build the turbines; ...
The TI LED BoosterPack has some interesting power devices. There's a Buck converter, a low drop linear regulator, a few Boost converters with power MOSFETs. The board also has 8 RGB power LEDs and current sensing circuits. Enough interesting electronics to investigate. In this first post, an overview   History  This is one of the lesser known BoosterPacks. It's marketed for the C2000 family, although it can be used by any 3.3 V development board. The only requirements are PWM and ...
Shameless plug to my recently published paper!  It's open source so you should be able to view it.   Key findings: Supercapacitors do not behave like other capacitors (obvious if you've used one).  Mainly in that their charge profile is not linear due to an internal distribution of time constants.  This means that you can charge a SC up to 1V, say, for 1s, then go open circuit and the voltage will seemingly drop, or sag.  If you do the same test but hold the 1V charge ...
Murata's small energy devices (UMA series), with high capacitance in a small package, can provide high-power backup for system or data for a long time in case of power failure. They can also contribute to a maintenance-free system because of their long cycle life characteristics.   In this demo video, further details are provided with comparisons to supercapacitors.   UMA series - Application example: Backup     Related articles: Part 1: Murata to realize Energy Harvesting ...
The Japanese car company Nissan is reusing some of the batteries from its electric cars in a new program to power cities’ streetlights. A lamp prototype of the light reborn program promo video (Image via Nissan)   As the debate on climate change and everyone’s carbon footprint continues, it is becoming evident that the world needs cleaner sources of energy, which mankind could adapt to all uses possible. That must be the driving factor in the fever automobile companies got to m ...
Murata’s small energy devices (UMA series) are optimum storage devices for energy harvesting. They can be used over a wide input and output range, and can store precious harvested energy for long time with low loss because they have low leakage current performance. In this demo video, further details are provided with comparing to other storage devices. UMA series - Application example: Energy harvesting Related articles: Part 1: Murata to realize Energy Harvesting for IoT - UMA serie ...
Murata’s small energy devices are secondary batteries offering high-rate charge-discharge characteristics of up to 10C in addition to a long cycle life. The award-winning UMA series is well suited as a power supply for small power portable equipment or as a backup power supply. UMA series - Features & Benefits Related articles: Part 1: Murata to realize Energy Harvesting for IoT - UMA series / Overview Part 3: Murata to realize Energy Harvesting for IoT - UMA series / Energy harvest ...
Learn all about Murata’s award-winning small energy devices (UMA series). The UMA energy saving devices can be used as a power supply or secondary battery for backup in various applications such wearable devices and healthcare. UMA series - Overview These energy devices can provide a safe and small solution for your next design. Related articles: Part 2: Murata to realize Energy Harvesting for IoT - UMA series / Features & Benefit Part 3: Murata to realize Energy Harvesting for I ...
(Image credit: Pexels)   Coal ranks number one on the dirty scale when it comes to burning fossil fuels for power generation. When coal burns, it releases carbon dioxide and methane, known emissions that contribute significantly to global warming. It also creates sulfur dioxide (SO2), nitrogen oxides (NOx), mercury along with particulate matter or soot, all of which have a negative impact on both the environment and humans. As a result, more plants have shifted to natural gas and renewable ...
Renewable energy development in the California desert. (Image credit: Bureau of Land Management via Flickr)   California is on track to reach 50% of their renewable energy goal ten years ahead of schedule, according to the California Public Utilities Commission RPS (Renewable Portfolio Standard) report, released back in November. The state’s primary utilities have already met (or are about to exceed) their renewable energy target of 33% by 2020 and is on track to hit their 2030 goal ...
Xilinx FPGAs provide a tremendous amount of design flexibility. Because they are so versatile, defining your power requirements isn’t as straightforward as simply reading an input voltage and load current requirement. You have core rails, auxiliary rails, bank rails and more that provide power to different portions of the chip. Some of these voltages are fixed and some are adjustable to unlock better performance or allow you to set I/O voltage levels compatible with other devices you want ...
Controller vs converter vs module Integration is the driving force behind many of the technologies we see from semiconductor manufacturers. Power devices are no different, whether it be integration of compensation, switching components, multiple outputs or inductors.   For this conversation we are going to define controller as, well, a switching controller. A converter would be a controller with integrated switches (we’ll focus on synchronous converters with both high and low side FE ...
Gallium nitride device can handle high voltages and make power conversion more efficient. (Image credit: MIT)   Most people know that electrical efficiency affects nearly everything that uses power- smartphones/mobile devices, electric vehicles and even the grid. Power converters play a significant role in the electrical equation, but they are incredibly inefficient and will never output more than the power it takes in. They are responsible for modifying voltages or convert between DC and ...
Introduction Sometimes in order to learn something, it is good to build and experiment and measure. That’s not always possible due to practicality concerns. This was the case recently, for a review of a piece of equipment that can work with a three phase mains electricity connection. The trouble is, I do not have a three-phase supply in my home, and I do not have easy access to such a thing at work either (and neither do most people unfortunately). Furthermore, I would not trust myself wit ...
3D printed gears and spring toggle a switch made of conductive plastic, which changes the state of a 3D printed antenna to convey data to a Wi-Fi receiver. (Image credit: University of Washington)   Researchers from the University of Washington have advanced civilization a few more years into the future by developing the first 3D printed plastic objects that are capable of collecting useful data and communicate that data to connected devices wirelessly without any electronics or batteries. ...