But often — if you’re careful — this curiosity pays off and you wind up learning how to make something cool like this coil gun from a camera flash’s capacitor. This handheld launches a ...

One of the best parts of building a coil gun is seeing just how fast you can get that slug to move through the air. [Daniel] built this speed meter to be able to see exactly that. It is comprised ...

A pulse driver circuit designed for solenoids and coils generates a short pulse of predetermined width to activate the ...

This project combines some of the most exciting aspects of DIY experiments. Lego, high voltage, and a powerful magnetic field. The idea is simple yet intriguing, using a copper coil, capacitors ...