Metal Detector Circuits

  








Circuits


The other day when I was searching instructables I come across on interesting and simple circuit for metal detector. It is build with 555 coil and few other components. Instructable that inspire me...

... that might help you. The SIMPLEST and CHEAPEST metal detector. ... what is also the frequency of operation of this circuit. IMadeIt ... For every one having trouble with building it, I made thi...

Read this post to get good idea about circuit diagram of metal detector. Metal detector is used to check the persons in shopping malls, hotels, etc.

When metal is placed near the coil the inductance of the coil changes which varies the resonant frequency of the LC circuit and therefore the pulse width. If the variation in pulse width compared a...

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The principle of operation of the detector is that when approaching the metal object to the coil inductance generator-host device-frequency generator changes. The closer the subject and then it is,...