Using Homebrew Coils to Measure Mains Current, and Taking the Circuit Breaker Challenge

Measuring current draw of home shop tools

Like many hackers, [Matthias Wandel] has a penchant for measuring the world around him, and quantifying the goings-on in his home is a bit of a hobby. And so when …read more Continue reading Using Homebrew Coils to Measure Mains Current, and Taking the Circuit Breaker Challenge

High Current Measurement Probe For Oscilloscopes

A decent current measurement sensor ought to be an essential part of every hacker’s workbench. One that is capable of measuring DC, as well as low and high frequencies with …read more Continue reading High Current Measurement Probe For Oscilloscopes

Current Sensor Makes Intriguing Use of Concrete

Getting a product to market isn’t all about making sure that the product does what it’s supposed to. Granted, most of us will spend most of our time focusing on the functionality of our projects and less on the form, fit, or finish of the final product, especially for one-off …read more

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A Low-Cost Current Probe For IoT Applications

When it comes to the Internet of Things, many devices run off batteries, solar power, or other limited sources of electricity. This means that low power consumption is key to success. However, often these circuits draw relatively small currents that are difficult to measure, with plenty of transient current draw …read more

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The Best Voltage And Current Reference This Side Of A Test Lab

When you measure a voltage, how do you know that your measurement is correct? Because your multimeter says so, of course! But how can you trust your multimeter to give the right reading? Calibration of instruments is something we often trust blindly without really thinking about, but it’s not always …read more

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If You Need a Measurement Tool Just Build A Measurement Tool

[Darlan Johnson] was working on a wearable project and needed a way to measure the change in voltage and current over time. 

Most measurement tools are designed to take snapshots of a system’s state in a very small window of time, but there are few common ones designed to observe …read more

Continue reading If You Need a Measurement Tool Just Build A Measurement Tool