How to Choose Permanent Magnets? 3 KEY PARAMETERS TO CONSIDER WHEN CHOOSING A PERMANENT MAGNET Every type of permanent magnet has a unique set of characteristics that can affect how is performs in various applications. When evaluating magnet options for your project, pay attention to the following...
A compass needle isn't nearly as strong as many of the permanent magnets used today. But the physical process that magnetizes compass needles and chunks of neodymium alloy is essentially the same. It relies on microscopic regions known as magnetic domains, which are part of the physical structu...
In a rollercoaster ride, you might have a series of powerful, permanent magnets permanently mounted at the end of the track, which produce eddy currents in pieces of metal mounted on the side of the cars as they whistle past. The cars move freely along the track until they reach the very...
Finally, you can destroy data on a hard drive by simply scratching up its platter. For this, you'll, of course, first need to open your drive. The exact steps will vary based on the device and drive you're using, so you might need to do some research to figure it out. As a gen...
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As the permanent magnets on the outer rotor sweep past them, the Hall-effect sensors figure out where the north and south magnetic poles of the rotor are and which coils to activate to make it keep spinning. The trouble with this is that it means the motor does need an electronic circuit...
magnets and a conductor. The conductor is typically a coiled wire. Inside the generator, the shaft connects to an assembly of permanent magnets that surrounds the coil of wire. In electromagnetic induction, if you have a conductor surrounded by magnets, and one of those parts is rotating ...
In this motor, it's formed by the can itself plus two curved permanent magnets. In DC motors, the armature is the rotor, and the field is the stator. Rotor, Commutator and Brushes The contacts of the commutator are attached to the axle of the electromagnet, so they spin with the ...
If the car travels faster, the permanent magnet inside the speed cup will rotate faster, which creates a stronger magnetic field, larger eddy currents and a greater deflection of the speedometer needle. If the car slows down, the magnet inside the cup rotates more slowly, which reduces the ...
Permanent magnet Marker Piece of metal TL;DR (Too Long; Didn't Read) You can also go all out and create an electromagnet out of your metal that will create a magnet field that will either be attracted by or repelled by other magnets. To make an electromagnet out of your metal, wrap ...