It’s an electromagnet pendulum analog circuit ... with electromagnets so they can move on to the next logical steps: coil guns and web shooters.

In this article, we explained the design process of a mini Tesla coil, covering its components, circuit details, PCB design, ...

As such, there are a variety of different challenges to be tackled: from coil design, to driving the increased power consumption, to even considering how coils interact with their neighbors.

A coil with an iron core is called an electromagnet. The iron core increases the coil’s magnetic field strength. A simple electromagnet is made by coiling wire around an iron nail. An iron core ...

A coil of wire, or solenoid, consists of a wire coiled up into a spiral shape. When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet.