The sensitivity of such a metal detector increases with increasing intensity of the field. Better put together a scheme of the device so that the transistor was in a metal case, one side of which was open.
With the issue of choice of the metal detector are facing both experienced hunters and newcomers. Everyone wants to avoid buying fakes, or device that does not match the declared characteristics. Today, the market is represented by a huge number of detectors, which are very easy to get confused.
How to make simple metal detector at home
Find gold with a homemade detector
Radio Calculator Metal Detector
