VLF Metal Detectors vs. PI Metal Detectors In Gold Detecting
VLF (Very Low Frequency) Metal Detectors A VLF metal detector is a single or multi-frequency device that consists of a constant sine wave. The sine wave(s) reaches down and into the ground to locate a metallic target. Once it begins, the device charges the target and releases an eddy current which consists of loops of electrical current produced within conductors by an alternating magnetic field in the conductor. This current is then sent back as a signal which tells you that you...










