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Block diagram of metal detector. It uses just one 40106 hex schmitt inverter ic a capacitor and a search coil and of course the batteries. Metal detector circuit diagram free download image search results with metal detector schematic circuit diagram image size 695 x 393 px and to view image details please click the image.
It uses just one 40106 hex schmitt inverter ic a capacitor and a search coil and of course the batteries.
The other day when i was searching instructables i come across on interesting and simple circuit for metal detector. This metal detector sensor project is easy to make and is an application of colpitts oscillator. The 555 ic timer here acts as a square wave generator and it generate pulses with frequencies audible to human. Instructable that inspire me to do this project was this one.
