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  2. Magnetic switchable device - Wikipedia

    en.wikipedia.org/wiki/Magnetic_switchable_device

    A round permanent magnet is inserted into the bored hole and a handle is attached to allow rotation of the magnet. This act of rotation changes the orientation of the magnetic field. [4] In the off position, the poles are oriented towards the non-ferrous core. The iron blocks act as keepers by bridging between both poles.

  3. Magnetic drilling machine - Wikipedia

    en.wikipedia.org/wiki/Magnetic_drilling_machine

    A portable magnetic drilling machine is faster and more portable alternative to hole making machines such as the drill press, and is more accurate than a hand drill. A portable magnetic drilling machine is used on steel or other magnetic materials. It gives an accuracy of 0.01 mm to 0.05mm in steel or other magnetic material.

  4. Cavity magnetron - Wikipedia

    en.wikipedia.org/wiki/Cavity_magnetron

    Magnetic lines of force are parallel to the geometric axis of this structure. Mechanically, the cavity magnetron consists of a large, solid cylinder of metal with a hole drilled through the centre of the circular face. A wire acting as the cathode is run down the center of this hole, and the metal block itself forms the anode.

  5. Ferrite (magnet) - Wikipedia

    en.wikipedia.org/wiki/Ferrite_(magnet)

    A small permanent magnet electric motor disassembled, showing the two crescent-shaped ferrite magnets in the stator assembly (lower left) In contrast, permanent ferrite magnets are made of hard ferrites , which have a high coercivity and high remanence after magnetization.

  6. The Best Hole Saws for Creating Perfectly Round Holes in a ...

    www.aol.com/lifestyle/best-hole-saws-creating...

    6-In. Bi-Metal Non-Arbored Hole Saw. If you need to make large holes for vents or can lights, consider this six-inch Lenox saw. The large teeth and thick walls maximize durability and efficiency ...

  7. Halbach array - Wikipedia

    en.wikipedia.org/wiki/Halbach_array

    The magnetic flux distribution of a linear Halbach array may seem somewhat counter-intuitive to those familiar with simple magnets or solenoids. The reason for this flux distribution can be visualised using Mallinson's original diagram (note that it uses the negative y component, unlike the diagram in Mallinson's article). [ 4 ]

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