This is a link to the article I published in the July 2016 edition of the Nuts & Volts magazine: an adjustable electronic load using old incandescent lamps.
Adjustable Electronic Load Using Incandescent Lamps
If you have a lot of old incandescent lamps laying around, this project and article I wrote for Nuts and Volts Magazine may interest you:
Comments, questions, suggestions? You can reach me at: contact (at sign) paulorenato (dot) com