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  2. Permanent magnet motor - Wikipedia

    en.wikipedia.org/wiki/Permanent_magnet_motor

    Schematic of a permanent magnet motor using brushes and magnets in the stator. A permanent magnet motor is a type of electric motor that uses permanent magnets for the field excitation and a wound armature. The permanent magnets can either be stationary or rotating; interior or exterior to the armature for a radial flux machine or layered with ...

  3. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release.

  4. Electropermanent magnet - Wikipedia

    en.wikipedia.org/wiki/Electropermanent_magnet

    An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by a pulse of electric current in a wire winding around part of the magnet. The magnet consists of two sections, one of "hard" (high coercivity) magnetic material and one of "soft" (low coercivity) material. The ...

  5. Automatic fire suppression - Wikipedia

    en.wikipedia.org/wiki/Automatic_fire_suppression

    Engineered fire suppression systems are design specific and most commonly used for larger installations where the system is designed for a particular application. Examples include large marine and land vehicle applications, server rooms, public and private buildings, industrial paint lines, dip tanks and electrical switch rooms.

  6. Fire alarm notification appliance - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_notification...

    The system can be stand alone (i.e. using dedicated loudspeakers, which can also feature integrated strobe lights), or the system can accommodate public address system functionality. In 1973, the Autocall fire alarm company (merged to SimplexGrinnell then relaunched), manufactured the first voice evacuation system. [6]

  7. "1923" will have its network premiere on Dec. 8 at 9 p.m. ET/PT and 8 p.m. CT on the Paramount Network.. The show will debut right after a new episode of "Yellowstone" Season 5, which airs at 8 p ...

  8. Today's Wordle Hint, Answer for #1256 on Tuesday, November 26 ...

    www.aol.com/todays-wordle-hint-answer-1256...

    If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1256 ahead. Let's start with a few hints.

  9. 15 Easy Appetizers You Can Make Ahead of Christmas Day - AOL

    www.aol.com/15-easy-appetizers-ahead-christmas...

    Shrimp Dip. Whip up this nostalgic dip the day before and refrigerate it overnight. All you'll need to do is add a layer of cocktail sauce and a side of crackers for dipping.

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