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  2. Parking sensor - Wikipedia

    en.wikipedia.org/wiki/Parking_sensor

    The electromagnetic parking sensor (EPS) was re-invented and patented in 1992 by Mauro Del Signore. [2] Electromagnetic sensors rely on the vehicle moving slowly and smoothly towards the object to be avoided. Once an obstacle is detected, the sensor continues to signal the presence of the obstacle even if the vehicle momentarily stops.

  3. Fluxgate compass - Wikipedia

    en.wikipedia.org/wiki/Fluxgate_compass

    A fluxgate inclinometer/compass. The basic fluxgate compass is a simple electromagnetic device that employs two or more small coils of wire around a core of highly permeable magnetic material, to directly sense the direction of the horizontal component of the Earth's magnetic field.

  4. Hall effect sensor - Wikipedia

    en.wikipedia.org/wiki/Hall_effect_sensor

    In such a case the Hall sensor is mounted in a gap in the magnetic core around the current conductor. [24] As a result, the DC magnetic flux can be measured, and the DC in the conductor can be calculated. Hall effect current sensor with internal integrated circuit amplifier. 8 mm opening.

  5. Solenoid (engineering) - Wikipedia

    en.wikipedia.org/wiki/Solenoid_(engineering)

    The push type has a push-pin projecting out of the solenoid to push the load away from the solenoid. Magnetically they are the same; i.e., internally the magnetic field attracts the plunger toward the stator pole piece. Most solenoids do not use magnetic repulsion between the magnetic pole and plunger to do the pushing except in rare instances.

  6. Eddy current brake - Wikipedia

    en.wikipedia.org/wiki/Eddy_current_brake

    Disk electromagnetic brakes are used on vehicles such as trains, and power tools such as circular saws, to stop the blade quickly when the power is turned off.A disk eddy current brake consists of a conductive non-ferromagnetic metal disc attached to the axle of the vehicle's wheel, with an electromagnet located with its poles on each side of the disk, so the magnetic field passes through the ...

  7. The best Walmart Black Friday 2024 deals: Shop the latest ...

    www.aol.com/lifestyle/the-best-walmart-black...

    Trending Walmart Black Friday Deals. HP 15.6 inch Windows Laptop, $199 (was $379) Apple AirPods 2nd Gen, $89 (was $129). Shark Navigator Lift-Away XL Upright Vacuum, $97 (was $199). KitchenAid ...

  8. ADE 651 - Wikipedia

    en.wikipedia.org/wiki/ADE_651

    The ADE 651 is a descendant of the Quadro Tracker Positive Molecular Locator produced in the 1990s by Wade Quattlebaum, an American car dealer, commercial diver and treasure hunter. The Quadro Tracker was promoted by Quattlebaum initially as a device to find lost golf balls, and later as a means of detecting marijuana, cocaine, heroin ...

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