Designers of portable electronic devices have a variety of choices on types of chemistries, charger topologies and charge management solutions. Selecting the most suitable solution should be a simple task, but in most cases, it is a more complicated process. The designer needs to reach an optimal balance between performance, cost, form factor and other key requirements.
Supercapacitors are finding their way into an increasing number of applications for short-term energy storage. One such application is a power ride-through circuit, in which a backup energy source cuts in and powers the load when main power supply fails for a short time. This type of application has been dominated by batteries in the past
Recent advances in IGBT technology have given motor drive designers more options to consider for system development. Different specification conventions of various vendors complicate the design process further. Conventionally, system efficiency has been equated directly with VCEON. This metric is important for calculating the conduction losses of an IGBT but leaves out switching losses completely.
In recent years significant advances in high-brightness LEDs (HB-LEDs) have given designers the opportunity to replace conventional incandescent, fluorescent and halogen technologies with more reliable and energy-efficient LED-based alternatives. As a result, solid-state lighting has seen considerable uptake in automotive, digital signage, and architectural applications, as well as the illumination of our city streets.
In Japan, space is a precious commodity. In the manufacturing setting, companies strive to make the most of every square inch. To that end, the Japan Industrial Imaging Association (JIIA) led the development of the Power over Camera Link (PoCL) Interface Standard for digital cameras and frame grabbers used in Machine Vision systems.
SuperSpeed USB connections — coming in 2010 — will zip data between devices at a theoretical rate of 5 Gbps, or more than 10-fold faster than a high-speed USB 2.0 connection. The faster transfers could help embedded-system developers who design video kiosks, TV recorders/players, and test-and-measurement equipment that use large quantities of information.
Even tennis isn’t sacrosanct—competitors in the US Open are being warned to watch what they tweet. The warning is purportedly to ensure compliance with tennis’ “Anti-Corruption Program Rules.” Posted in conspicuous locations, the warning reads: "Many of you will have Twitter accounts in order for your fans to follow you and to become more engaged in you and the sport...
The UK is considering a law that would force ISPs to cut off service to those accused of illegally downloading movies and/or music. This has the potential to reignite an old debate—one that’s persisted since the term “digital media” was invented. Our handling of this issue has profound ramifications for the future of the entertainment industry.
When I started in the rapid prototyping industry with 3D Systems in March of 1989 it was just months after the very first SLA system, the SLA-1, was introduced at the Autofact Show in Detroit in 1988. This first rapid prototyping system was invented by Chuck Hull, an engineer trained in photosensitive polymers.
In the push to increase bandwidth, range and sensitivity in wide bandwidth systems, multi-antenna and multi-sensor arrays are becoming increasingly popular. With each antenna or sensor requiring its own signal chain, many analog-to-digital converter (ADC) suppliers are integrating multiple high-speed ADCs into a single IC design.
Filters are common in electronic equipment. From antialiasing filters used before A to D converters, to reconstruction filters after D to A converters, to intermediate frequency (IF) strips applications for filters are everywhere. The common thread is the desire to pass some frequencies, while blocking others. An ideal filter will have an amplitude response that is unity (or at a fixed gain) for the frequencies of interest
When designing at the board level, there are always new things to consider. Here are some essays on design to help you in your work.
As the cooling challenges of 3U CompactPCI (cPCI) embedded system applications multiply due to increased processing power, reduced package sizes and more hostile environments, new thermal management options and industry standards continue to evolve. Chip and board manufacturers have already done a vast amount of work to mitigate thermal management concerns.
Ready-to-use wireless modules provide a way to quickly get a design "on the air" when engineers find RF circuits and communication protocols fall outside their areas of expertise. Even when engineers have RF experience, a module still might make sense from the perspective of saved time and money.
On October 20, 2005 Congress passed the Digital Transition and Public Safety Act of 2005. The act mandated the cessation of analog broadcasting by February 18, 2009, and the subsequent reign of digital. The program floundered, leaving the public woefully unprepared for the February deadline. This example illustrates how badly the government can mangle an enterprise.