The simplest Metal detector with one BC548

Published:2012/9/13 21:10:00 Author:Ecco | Keyword: simplest, Metal detector, one | From:SeekIC

This is the circuit diagram of a low cost metal detector using a single transistor circuit and an old pocket radio..This is nothing but a Colpitts oscillator working in the medium band frequency and a radio tuned to the same frequency.First the radio and the circuit are placed close.Then the radio is tuned so that there is no sound from radio.In this condition the radio and the circuit will be in same frequency and same frequencies beat off to produce no sound. Source: NEXT.GR



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