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Late last week at work, our head of Maintenance at work had an older Fluke 190 Scopemeter at his desk. He said that something was wrong with it and he wasn't sure what to do with it - send it in for repair, or get rid of it and get a new one. At almost $5,000 however, he said his department didn't have it in the budget for this year for a new one. The scope was clearly beat up and showing its age. He said it wasn't powering up anymore and probably has a bad battery.   I told him I could ta ...
Advances in a nanomaterial-based detector platform arrive thanks in large part to Mahmooda Sultana's fund winnings. The $2 million award comes from NASA's Goodard Space Flight Center and will take two years to advance the multifunctional sensor. If the advances in research go well, the technology could help NASA with sending humans to the Moon and Mars. The platforms would be installed on rovers to find tiny traces of water and methane. It could also be used to monitor astronauts or be used as b ...
Introduction  Continuing with my insulation tester series, I have changed the rules for this review slightly. Whilst the earlier reviews showed different offerings from manufacturers, this one will be a review of two very similar meters, detailing them in comparison to one another, rather than a comparison against the previous testers reviewed.   Keysight Insulation Multimeter Failure   Megger MIT420/2 Road Test   Chauvin Arnoux CA6526 Insulation Tester Review   Flir IM ...
Cruising in Siberia's Lake Baikal. (Image via pixabay)   The magnetic north pole is rapidly moving away, and scientists can't explain why. It's been occurring in the past few decades, and the effect makes estimates for navigation a bit less accurate.  Scientists released an update on Monday, indicating where the magnetic pole is now.  The pole is drifting 34 miles a year and crossed the international date line in 2017. However, it is now leaving the Canadian Arctic and is heading ...
I'm road testing the  Keithley Bench Digital Multimeter DMM6500. In this post, a simple method to save measurements and list them in a table with a keypress.     Saving Measurements to a Table  This is the default behaviour of the DMM. Measurements are stored in defbuffer1 when you switch on the meter. I'm using this functionality to register a number of measurements, using the TRIGGER button to take a measurement.   I'm measuring a feedback circuit on my bench. ...
One of the things that jump out in Louis Rossmann's videos is the type of flux he uses (and the amount ). The fluxes I have at home are liquid, and that works well when building new PCBs. The Amtech flux I'm testing here is a jelly when applied and becomes fluid when hot. This may be helpful when reworking surface mount ICs, where my flux is gone by the time I'm halfway reworking them.   What I'm hoping to get out of this is to improve my success rate when reworking QFN packages and the ...
A city that was completely lost to time in the outskirts of Johannesburg, South Africa has been re-discovered. The ancient stone huts that can be seen from the naked eye was actually an active city that had been lost for 200 years. Archaeologists in South Africa had been observing and researching the dense vegetation for three decades and had barely known much about it. Thanks to LIDAR (Light Detection and Ranging) technology, the entire site has been revealed for what it was once: a metropolis ...
I'm road testing the  Keithley Bench Digital Multimeter DMM6500. In this post, I review an experimental app to implement Hold functionality. The script is made by a Keithley engineer in his free time. Experimental. See the end of this post for stability remarks.   The DMM6500 doesn't have a hold function out of the box. The App that I'm reviewing here implements it. It shows a maximum of 8 stable measurements. You can move the meter probes around on your circuit. Every time ...

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