Metal detecting is a fun pastime ... A Very Low-Frequency (VLF) detector uses two coils, one to emit and one to receive. They are overlapped just enough so that the reception coil can’t see ...

This one differs by using an Arduino to read from the metal detecting coil. The circuit starts with an oscillator that produces a signal of about 160 kHz which is constantly measured by the Arduino.

Minefields can make a war zone uninhabitable for decades after the conflict. The fight against this began with the invention ...

Consumer metal detectors have a round head known as the "search coil," which is the part that actually does the detecting. There are two parts to the coil, the transmitter coil and the receiver coil.

An advanced metal detector coil encompasses the diameter of the sensor head. Passing current through the MD coil creates an electromagnetic field that induces an electrical current in any metal ...

The Garrett Ace 300 is a multi-purpose metal detector. This model features a 7-by-10-inch submersible coil and digital interface. It runs on four AA batteries, has an adjustable length of 42 to 51 ...

Consumer metal detectors have a round head known as the "search coil," which is the part that actually does the detecting.