Metal Detector Circuits

  

Circuits


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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...

Simple metal detector circuit diagram with 555 timer and applications. Metal detector is used to check the persons in theatres, shopping malls, hotels etc.

The principle of operation of the proposed metal detector circuit is quite basic yet very interesting. The detecting function is triggered by sensing the decrease in the Q level of the LC network a...

This metal detector can detect metal as well as magnets. When a piece of metal or magnet is brought close to the inductor/choke the output frequency changes and you can hear sound from the speaker....

Concealed metallic objects such as metal foils enclosed in a plastic cover, e.g., toothpaste tubes, and small objects like refill tips made of magnetic materials too can be detected using this circ...

The post explains a simple but effective metal detector circuit.


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