Disadvantages Of Magnets

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A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic, such as iron, and attracts or repels other Magnets Types of commercial magnets: Neodymium magnets: Neodymium Iron Boron (NdFeB).This type of magnet is composed of rare earth magnetic material, and has a high coercive force. They have an extremely high energy product range, up to 50 MGOe. Because of this high product energy level, they can usually be manufactured to be small and compact in size. However, NdFeB magnets have low mechanical strength, tend to be brittle, and low corrosion-resistance if left uncoated. If treated with gold, …show more content…

Radioactive magnets • Wooden disc • Piezoelectric crystal • Windings • Springs Fig. 3.1 Suspension Fig. 3.2 Bearing CHAPTER 4 DESIGN REQUIREMENTS Outer Diameter of disc = 250mm Inner diameter of disc = 35mm Thickness of disc = 24mm Magnetic flux = Lenz’s force law = CHAPTER 5 SPECIFICATIONS MATERIALS SPECIFICATIONS QUANTITY Magnets 8mm diameter, 1.5mm thickness (neodymium) 20x10x5mm (black magnets) 8 each Wooden disc 250mm diameter, 24mm thick 1 Piezoelectric crystal 50mm diameter 2 Windings 2 Springs …show more content…

When the wheel starts to rotate, the magnets attached with the wheel circumference also rotates. When these rotating magnets cross near the winding placed, there is a deflection in flux density around the windings. This deflection in flux induces an emf in the windings. With this fluctuating change in flux we get a constant generation of emf in the windings. This emf generated will be used for the several electricity purposes. The spring system is used as the suspension in our prototype. The compressive and expansive force stresses over the piezoelectric crystal which deforms the crystal and generates electricity. This electricity generated will be combined with the electricity generated for the electrical purposes. Fig. no. 9.1 Photographic image 1 Fig. No. 9.2 photographic image 2 CHAPTER

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