Category Archives: Fundamentals

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

Mystery Resistance

Posted on 2018-07-13 by M. Eric Carr

In which I learn several things and unwittingly become a voltage divider. Continue reading →

Posted in 3D Printing, Design, Digital, Drexel, EET201, Electronics, Fundamentals, PIC Microcontrollers | Leave a comment

Electronics Intuition, or The Giggle Test

Posted on 2016-01-26 by M. Eric Carr

Mathematical analysis is one of the most useful tools in electronics. With the right formulas, you can figure out what value capacitors and inductors to use to make a resonant circuit operate at a particular frequency, or what resistors to … Continue reading →

Posted in Electronics, Fundamentals, Troubleshooting | Leave a comment

Geomagnetism

Posted on 2015-07-30 by M. Eric Carr

With a compass, some wire, and a power supply, the Earth’s magnetic field can be measured. Here’s how. Continue reading →

Posted in Electronics, Fundamentals, Science | Leave a comment