فلزیاب پالسی فلزجو - FelezJoo PI

Thank you.
Please notice too, due to special configuration of op-amp in this project with AC coupling, location of some components on pcb is CRITICAL! This point especially MUST be considered about capacitors C12, C15 , C16. Otherwise, the circuit may not work correctly. So if you change pcb layout according to your taste, you should be careful about it.
For A,B,C values, these should be ABOUT A300 B700 C800. Accurate values are not very important. If you commit any mistake in PCB or components value, these numbers can easily be changed. Also at the moment of balancing, no metal should be close to coil! It is obvious point about all metal detectors and in this project, it will lead to low numbers (A,B,C). Moreover, coil connector and type of cable are important. We prefer to use non metallic connector and high grade RG-59 cable to connect the coil.