Page 1 of 4 - About 35 Essays
  • Stepper Motors Case Study

    An interesting characteristic of this motor is that even when it is not powered, the motor exhibits some magnetic resistance to turning. • Variable-reluctance (VR) stepper motor — Unlike the PM stepper motor, the VR stepper motor does not have a permanent-magnet and creates rotation entirely with electromagnetic forces. This motor does not exhibit magnetic resistance to turning when the motor is not powered. The basic construction Stepper motors consist of a permanent magnetic rotating shaft, called the rotor, and electromagnets on the stationary portion that surrounds the motor, called the stator. The rotor The rotor itself is made from two discs, a little like gears, one of which is a magnetic north pole (red) and the other is a south pole (blue). When we put the two discs back to back, we get north and south pole teeth alternating around the edge. The…

    Words: 1685 - Pages: 7
  • Analysis: The Great Electro Magnet Race

    The Great Electro Magnet Race is designed to teach Ms. Rayburn’s fourth grade class about electromagnets and magnetism. The main point for the students to learn will be that certain metals possess an electromagnetic force and can attract other types of metals by their electromagnetic field. Teaching the students about how electromagnets work and what magnetism will surely get them more interested in STEM education. The children need to understand more about engineering design as well as creative…

    Words: 707 - Pages: 3
  • Permanent Magnet Research Paper

    homemade electromagnetic magnets and permanent magnets strength on heat and cold temperatures. I'm going to accomplish this by making three sets of electromagnets and permanent magnets in hot temperature, room temperature and cold temperatures to see how would they be affected by the different temperatures its put in. But the dependent variable is on the magnetic field strength. In the next other paragraphs is research on magnetism and how is it going to be affected by heat and cold…

    Words: 973 - Pages: 4
  • 11a Lab Report

    and use the adjustment screws and the level to ensure the plane is level. Place the Plexiglas strip onto the wood and use a steel ball to check again that it is indeed level. • Place the ramp onto the metal inclines and use the magnets to secure it. Make sure the ramp touches the horizontal surface, but does not flex at the edge of the inclines. • One challenge is to launch the ball without giving it a kick. This is possible with a magnetic launch mechanism you can put together…

    Words: 2035 - Pages: 9
  • Brushless Dc Motor Effect Essay

    The coils are activated automatically one phase after the other by the drive electronics as organised by the hall effect sensors. This motor acts in a similar way to the three phase synchronous motors that utilise their own variable frequency drive. Contrast to this system, the Brushed DC motors use a rotating set of wire coils which is commonly referred to as the armature, and this acts as an electromagnet with two poles. A mechanical rotary switch known as the commutator, is used to switch the…

    Words: 1018 - Pages: 5
  • Analysis Of Arduino Genuine Uno

    ANT Table 3.2: RF Receiver The Relay: [5] A relay is electromagnetic switches operated by using an exceptionally small electric powered modern that execute flip regarding or away from a plenty larger electric current. The morale on a relay is an electromagnet (a spire about the wire that becomes a brief magnet when electrical energy flows via it). You be able to think on a relay as much a form regarding electrically powered lever: switch that about including a younger contemporary then it…

    Words: 1576 - Pages: 7
  • Research Paper On Magnets

    fields. Therefore this report outlines superconducting magnets, its benefits of why they are good magnets, as well as an overview of the major superconductor magnet applications. 2. Classification of Magnets A. magnet is a material or object that produces a magnetic field, which is really an interaction between electrons [1]. When current passes through a coil of wire, it is able to produce a magnetic field. If the coil has a large number of turns of wire, the magnet field produced would be…

    Words: 1508 - Pages: 7
  • Electric Engine Lessen Pollution Essay

    Electric engines This are steps how to make electric engines First of all we must have an engine. Then we will use electro magnets that will help the engine spin. Instead of using gas the electromagnets will do the job. The battery will help the electro magnets spin that will cause the engine to move. Then the engine could be placed already in the transmission a car so that it will spin and make the car move. Electric engines are charged by cables that will charged the battery and make the…

    Words: 856 - Pages: 4
  • Samuel Morse's Use Of The Dots And Dashes In The Telegraphs

    Once he returned home he began drawing the plans for his electrical telegraph. His first model was composed of a wooden frame, which would hold an electromagnet, paper, and a marking pencil suspended from a pendulum. The pencil would mark on the paper as the electric circuit was opened and closed. What is now known today as Morse code is what Samuel Morse created when he used dots and dashes in his telegraph. To continue his experiments and research he needed financial support. Fortunately,…

    Words: 286 - Pages: 2
  • Discovery Of Magnets Essay

    North pole. The Earth has a magnetic field that can interact with other magnets. The North end of a compass magnet is drawn to align with the Earth's magnetic field. Because the Earth's magnetic North Pole attracts the "north" ends of other magnets, it is technically the "South Pole" of our planet's magnetic field. The most powerful magnet in the universe is actually a star called a magnetar. These are stars that have died off and had a supernova explosion. The magnetars are what is left over,…

    Words: 1409 - Pages: 6
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