Pass Through Metal detector

[Sukhbir]

Hello Everyone
I am newbie to metal detector thing. I am building a pass through metal detector system. can anyone recommend me any book or blog that gives exact information about electronics behind metal detector how to select coil, how to make beat amplifier and everything.




like this

[Qiaozhi]

https://www.amazon.co.uk/Inside-Meta...s%2C215&sr=1-1

[pito]

Walk-through metal detectors typically use pulse induction (PI) technology.
https://kintronics.com/walk-metal-detectors-work/