Category Archives: Electronics

Back EMF

Posted on 2020-02-03 by M. Eric Carr

Lenz’s Law explodes an NMOSFET and kills an Arduino Uno. (Sometimes, Science goes bang.) Continue reading →

Posted in Analog, Arduino, Digital, Electronics, Fundamentals, Power, Toys | Tagged , , , , , | Leave a comment

Component Tester

Posted on 2019-05-31 by M. Eric Carr

The microcontroller revolution has accelerated the development of tools available to the electronics industry. Multimeters (recently, DMMs) and oscilloscopes (recently, DSOs) have been a staple of electronics workbenches for decades, along with signal generators, frequency counters, and other specialized tools. … Continue reading →

Posted in Analog, Components, Electronics, Reviews, Tools | Tagged , | Leave a comment

Homemade Capacitors

Posted on 2019-01-26 by M. Eric Carr

Making a working homemade capacitor with mica, aluminum foil, and a 3D printer. Continue reading →

Posted in 3D Printing, Analog, Components, Electronics, HOW-TO, Mad Science, Science, Uncategorized | Tagged , , | Leave a comment

Artifact-Free Metrology!

Posted on 2018-11-16 by M. Eric Carr

Today’s CGPM vote means that as of next May 20, all SI units will be defined in terms of natural constants, democratizing SI references. Progress! Continue reading →

Posted in Current Events, Digital Citizenship, Electronics, Fundamentals, Mechanical, Science | Leave a comment