The manufacturing principle of small power generation equipment is based on electromagnetic induction. When a conductor (like a nail) moves quickly through a magnetic field, an electric current is produced in the conductor. This phenomenon is called electromagnetic induction. The magnetic field produced by the magnet interacts with the nail, causing the electrons on the nail to move, creating an electric current. By connecting wires to draw the generated current, power can be supplied to external circuits or devices.
The specific method of making a small power generation device is: wrap a wire around an iron nail, connect the other end of the wire to the load (like a light bulb), then place the magnet near the iron nail, and move the magnet at a certain speed. When the magnet moves closer or further away from the iron nail, the change in the magnetic fielde will cause the current on the iron nail to change, thereby generating a voltage on the load, causing the load to ignite.
This simple principle of power generation can be used in experiments or in small electronic devices, but to generate large amounts of electrical energy, more complex design and implementation is required .