A New Family of Miniature, Fast and Accurate Transducers for Isolated Current Measurement

This article introduced a new series of miniature, fast and accurate transducers for isolated measurement of AC and DC currents. The design of isolated current transducers has been continuously driven by cost and size reduction. Continuing this trend, a new family of transducers needing no magnetic circuit has been introduced in standard small-outline integrated circuit … Read more

Are Hybrid Transducers the Future for Power Converters with SiC MOSFETs?

Markets are expected to open up for sensors capable of delivering response times as low as 100ns and unprecedented cut-off frequencies above 1MHz. Much of what many operators in the industrial world are looking to achieve in terms of sustainability and productivity gains revolves around having the most efficient power converters. Suitable for working in … Read more

Low-cost vibration analysis using PC audio and DIY motion sensors

Vibration analysis is a powerful and non-invasive way to measure, understand, and quantify the internal dynamics of mechanical systems, but the cost of the necessary instrumentation is sometimes a deterrent to personal use.  This design idea explores the potential of personal computer audio codecs, software oscilloscopes, and spreadsheet math for acquisition of signals produced by … Read more

Dissecting an underwhelming dog bark controller

Meet Lexie, our three-year-old female Collie:             She’s very pretty (IMHO)…in stark contrast to that ugly dude looming behind her. She’s unfortunately also a barker. Around 1.5 years ago, I had the bright idea to pick up an ultrasonic bark deterrent device, with a claimed 50-foot maximum bark-detection range. It didn’t go well. When … Read more

Dissecting an underwhelming dog bark controller

Meet Lexie, our three-year-old female Collie:             She’s very pretty (IMHO)…in stark contrast to that ugly dude looming behind her. She’s unfortunately also a barker. Around 1.5 years ago, I had the bright idea to pick up an ultrasonic bark deterrent device, with a claimed 50-foot maximum bark-detection range. It didn’t go well. When … Read more

3V/5V DACs Support Intelligent Current Loop

This tutorial is all about intelligent transmitters with high-resolution low-power D/A converters employed within their system. Transducers with 4-20 mA current loop are also particularly cited on a section of this article. IntroductionIntegrated circuits and chips are now dominating the industry with may components stuffed into a single chip. As electronic devices’ size gets smaller, … Read more

Very simple amplifier with phantom power

The circuit in Figure 1 is suited for inductive sources such as a dynamic microphone, transformer or inductance sensor/pick up. Figure 1 A simple amplifier circuit suited for inductive sources such as a dynamic microphone, transformer or inductance sensor/pick up. The circuit is versatile; its gain can be varied from 1 to about 130. it … Read more

Video: Tear down that Prius!

Click here to see a sped-up video of a Toyota Prius being torn down in one minute. The electronic innards were exposed at the recent Embedded Systems Conference in San Jose in a series of presentations by David Carey of Portelligent and Al Steier of Munro and Associates . Their findings were since cataloged in … Read more

Slideshow: Amazing remote sensing-based scientific applications

From saving millions of animals from scientific experiments annually to wearable sensors on elephant seals, remote sensing applications are rapidly evolving to provide an amazing amount of useful data in a fraction of the time and sometimes expense. Here are remote-sensing applications and the tools that are used. <span style ="color: windowtext;" Animal Experiments and … Read more

Programmable hall switch extends flexibility of detection circuit designs

Diodes Incorporated has introduced a programmable omnipolar Hall effect switch enabling designers to use the same contactless detection circuit in multiple applications or with different field strengths. The miniature and micropower AH1898 is suitable for numerous portable consumer applications including cell phones, tablets and cameras as well as a variety of domestic, office and industrial … Read more