Author Archives: M. Eric Carr

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

Cracker Hunting

Posted on 2016-02-12 by M. Eric Carr

In which various Linux command-line tools are used to lower the boom on some asocial script kiddies. Continue reading →

Posted in Digital Citizenship, Internet, Networking, System Administration, Tools, Troubleshooting | Leave a comment

Remembering Challenger

Posted on 2016-01-28 by M. Eric Carr

Thirty years ago today, we lost the Space Shuttle Challenger. And it didn’t have to happen. Continue reading →

Posted in Current Events, Design, Science | 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