If you’re not familiar with the modern oil industry, you might think that drilling for oil still resembles the scene in the movie “Giant”, where James Dean’s character hits a classic Texas gusher. The truth is that it’s much harder than that to get oil out of the ground these days. Most of the oil exists in a solid form, trapped in rock crevices or layers of sand. And oil drilling companies are using light to help get it out.
In embedded DC-DC converters in industrial applications like test and measurement equipment or embedded computing, the system architecture can be quite complex, with many different output voltage and current, ripple, EMI and power sequencing requirements. This article will explore the impact of the choice of the converter power stages in DC-DC applications.
As the holidays approach, what product or technology is on your wish list?
Compliance and compatibility are critical factors in the design of medical electronics equipment. The following are responses to questions posed by ECN regarding how vendors address certification issues and what types of testing are required.
Designers of portable medical devices face unique challenges. Their chosen field is known for regulatory scrutiny, protracted design and life cycles, and a need for unparalleled robustness in the finished product. In addition, design objectives that are common to all electronics can have special significance when it comes to medical devices. For example, low power consumption is always an objective for designers of portable electronics. Less power means a smaller and lighter battery, which enhances portability.
Software-defined instrumentation is the new face of automated test. Scientists and engineers performing leading-edge research and designing custom measurement and control systems have used software-defined instruments, also known as virtual instruments, for more than 20 years. Software-defined instruments were critical for these often one-of-a-kind applications due to their unique system requirements.
Somewhere in Africa, a traveling health worker arrives at a remote village and finds a patient who may have malaria. The nearest health clinic is hundreds of miles away, and it will take days to get there. Diagnosis requires a trained clinician to examine a blood sample under a microscope, but how can you make that happen? Your assignment, if you choose to accept it, is to create a digital microscope that will capture high magnification images, record additional medical information, and transmit the entire package of data wirelessly to the distant clinic.
If Mae West were to deliver one of her most famous lines today, she might ask if you’ve got a portable consumer electronic device in your pocket. (And for the record, the original inquiry was about a gun, not a pickle as is widely misquoted.) Between our mobile phones, MP3 players, PNDs (portable navigation devices), and other indispensible gadgets, it’s a wonder that we’re not seeing pinstripe suits with cargo pants.
In many quality control operations, the human eye has been replaced by the unblinking lens of the digital camera. A machine vision (MV) system is intended for non-contact optical sensing and is ideal for use in quality control (QC) systems for quality assurance (QA). Industries exploiting MV include automotive component manufacturing, electronics assembly, semi-conductor production, food processing and pharmaceuticals manufacturing.
The world of computer technology has two incompatible characteristics. First, many computer systems have long lives. Second, students and many engineers pay attention to only the latest technologies and they believe old technologies have died out. The "yesterday's-fashion” phenomenon has applied to the Ada programming language, too. If engineers have heard of Ada at all, they may assume it is an old US Department of Defense technology that disappeared long ago.
Most power-conversion applications require a DC source, which uses a rectifier that draws non-sinusoidal line currents. As a result, line-current harmonics have become a significant problem and they lead to overheating of transformers and inductive equipment, degradation of system voltages and increased stress on components. In addition, stringent limits imposed on harmonic currents by international groups make the need to improve power quality even more important. Power-factor correction (PFC) can help solve these problems.
The recent Energy Star controversy must inevitably be discussed in a broader context. To sum up current events: on June 2nd, the EPA violated Energy Policy Act (EPACT) 2005 by releasing a “technical amendment” (version 4.2) to their Energy Star solid state lighting criteria without consulting “interested parties” (i.e. industry).
Considering the military's exemption to RoHS regulation and its continued need for leaded parts, where do you think the reduced availability of leaded parts will make the greatest impact on the Mil/Aero market?
Touchscreen technology has become more prominent in recent years, especially in the consumer and kiosk markets. PDAs, ATM machines, supermarket check-outs, and Apple’s iPhone are among the most well-known uses of touchscreen technology. Some touchscreen technologies have found a place in applications where the more commercially known technologies (resistive and capacitive) are inadequate. This month, we review the different types of touchscreen technologies available for the consumer electronics industry, along with their pros and cons, their applications, and a look into the future.
Everyone is worried about the global economy, and many are afraid that the U.S. electronic design and manufacturing industry is facing dire straights. To those who worry, I say that the primary American electronic markets are amongst the most economically stable places in this crisis, and have some of the most innovative and creative engineers in the world.