Handmade metal detector

What is a metal detector?

A metal detector it’s a device that detects the presence of hidden metal.

How do metal detectors work?

Metal detectors work by transmitting an electromagnetic field from the search coil into the ground. Any metal objects (targets) within the electromagnetic field will become energised and retransmit an electromagnetic field of their own. The detector’s search coil receives the retransmitted field and alerts the user by producing a target response.