Pulse Induction Metal Detectors. How do they work? Part1: Transmit circuit. LTspice analysis.
Автор: Electronics ain't easy
Загружено: 2024-10-21
Просмотров: 1647
This is the first video in a series that I plan to make about pulse induction metal detectors. I plan to use LTspice to simulate all the (basic) steps/modules needed to detect metals with a PI metal detector. I think it's a great way to learn about transistors (used as switches) and op-amps (used as small signal amplifiers, differential amplifiers, integrators, etc).
Here, I am showing how a pulse that is fed into a coli (inductor) produces a flyback voltage whose decay can be used to detect metals in the ground. This is super basic but that's really how PI metal detectors work.
If you want to know more about how metal detectors work, I highly recommend this book: "Inside the Metal Detector" by George Overton and Carl Moreland.
Also, the geotech forum is a great resource for PI (Pulse Induction) circuits.
Link to LTspice simulation file: https://drive.google.com/file/d/1RE_C...
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