2014 in Test and Measurement: Sensing, troubleshooting and HMI transformation
Today’s engineers and technicians face increasingly complex and critical troubleshooting tasks. Designs that work fine in the lab can sometimes fail in the field, causing customer dissatisfaction, lost production, expensive repair bills and, sometimes, safety concerns. With the customer impatient to get their system fixed as rapidly as possible there is huge pressure to troubleshoot and fix problems quickly and accurately.
Sensing elements for current measurements – Part 1
Ryan Roderick of Intersil explains how to choose a sense resistor and discusses the inaccuracies associated with the sensing element and the extraneous parameters that compromises the overall measurement.
Considerations When Specifying a DC Power Supply
Every automated test system that tests electronic circuit boards, modules or equipment needs one or more DC power supplies. DC supplies provide power to the device under test as well as test stimulus. In some cases, the supply used to provide power to the DUT also provides a test stimulus by simulating the operating environment. For example, while most automotive electronics run at a nominal 12 VDC, the maximum input voltage may be as high as 27 VDC. Because this is so, some automotive standards require margin testing up to 27 VDC on a 12 VDC device. Necessities such as these determine power supply requirements.
Slideshow: Top 10 sensor trends to follow
Here’s a look at 10 trends in 10 sensor applications emerging from the recent International Consumer Electronics Show (CES) and over the past year.
Almost all designers and producers of digital high-speed systems are about to face the challenge of having to consider high-frequency design aspects. Specifically, this is about optimal data transfer being only possible on transmission paths with correct impedance ratios. Learn more about adequate measuring technology here.
InvenSense, Bosch, NXP winners in iPhone 6
There are have been numerous teardowns of the iPhone 6 since the Apple smartphone was launched and while the application processor may get most of the attention it is the analog, MEMS sensors and RF that are far more plentiful.
In November 2014, the International Conference on Measures and Weights will likely agree on a new definition of the Ampere as one of the three basic dimensions of electricity. Just in time before the conference, a group of scientists from Physikalisch-Technische Bundesanstalt (PTB), the German Institute of Metrology, succeeded in developing something like the new gold standard for current: The device does not only generate a single-electron current but is also capable of measuring it – without relying on resistance and voltage as auxiliary values.
Measuring differential current at high precision and low cost
Products and solutions for the field of renewable energy have long been part of VAC’s portfolio. For many years the Hanau-based company has supplied AC-DC-sensitive differential current sensors (DI sensors) for use in solar inverters as per EN 62109. In addition, VAC has identified further exciting areas of application for the future in modern advanced electronics.
Optimizing precision photodiode sensor circuit design
Photodiodes are one of the most popular sensor types for many light-based measurements. Applications such as absorption and emission spectroscopy, color measurement, turbidity, gas detection, etc., all rely on photodiodes for precision light measurement.
Get in touch with the changing user interface of today’s test instruments – part 1
New generations of electronics engineers, new groups of users with non-electronics background are increasingly utilizing complex test instruments. This constellation has led to a transformation of the user interface in lab instruments, and even to new ways to utilize these devices.
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