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One Transistor Metal Detector

2016-05-08 11:44  
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One Transistor Metal Detector
This is the design of simple 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. This is the figure of the circuit. Source: NEXT.GR