Category Archives: Power

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

DIY Ionic charging

Posted on 2018-04-24 by M. Eric Carr

Charging the Fitbit Ionic without the charging cable.
(TL;DR: The center pin is 5V; the outer two are Ground.) Continue reading →

Posted in Hacks, HOW-TO, Power, Reverse Engineering, Toys | Leave a comment

Sense Home Energy Monitor: First Impressions

Posted on 2017-02-19 by M. Eric Carr

First (very positive) impressions of the Sense Home Energy Monitor. Continue reading →

Posted in Electronics, High Voltage, Power, Reviews, Tools, Toys | Tagged , , , , , | Leave a comment

A Better Voltage Regulator

Posted on 2016-02-16 by M. Eric Carr

There’s a switched mode, drop-in replacement for the LM7805. Pass it on. Continue reading →

Posted in Components, Current Events, Electronics, Power, Toys | Leave a comment