Understanding Pulse Induction (PI) Metal Detectors
PI metal detectors work by transmitting pulses of electromagnetic energy into the ground. When the pulses encounter a metal object, they induce a secondary current in the object. This secondary current is then detected by the detector, indicating the presence of metal.
Wind the coil: Wrap the enameled copper wire around the ferrite core. The number of turns will depend on the desired sensitivity.
Connect the components: Assemble the circuit on the breadboard following the diagram.
Power the circuit: Connect the battery to the circuit.
Test the detector: Hold the coil over a metal object and listen for a tone from the headphones or speaker.
Experiment with coil size: A larger coil can detect deeper targets but may also be heavier to swing.
Adjust the circuit: You can experiment with different component values to fine-tune the detector's sensitivity and response.
Add a discriminator: A simple discriminator circuit can help you differentiate between ferrous and non-ferrous metals.
DIY Simple PI homemade metal detector Explanations and lessons and videos about DIY Simple PI homemade metal detector with simple and sensitive tools enable you to make a metal detector and find gold.
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