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Metal detector
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In this project i make use ogf two oscillator.Across second oscillator we have inductor coil.we keep this two oscillator at same freqency.Output is connected at the second osciilator in the form of alarm which is drive by IC2822. when metal is come across inductor its frequency chages i.e we get some finite difference in frequency acroos the output and because of this alarm start buzzing.which indicate a metal is detected.
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i want to know how to make your project..... i am 4th y student

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plz give me the details and the cost of doing this project.... plz do as fast you could plz....
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