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Permanent magnet motors consist of two main types. Surface permanent magnet motors (SPM) and internal permanent magnet (IPM) motors. The main difference is that SPM motors place the magnets on the outside of the rotor while IPM motors place their magnets inside the motor. Benefits to internal magnets include structural integrity and reducing ...
A permanent magnet synchronous generator is a generator where the excitation field is provided by a permanent magnet instead of a coil. The term synchronous refers here to the fact that the rotor and magnetic field rotate with the same speed, because the magnetic field is generated through a shaft-mounted permanent magnet mechanism, and current is induced into the stationary armature.
SimplexGrinnell, a subsidiary of Johnson Controls, is an American company specializing in active fire protection systems, communication systems and testing, inspection and maintenance services. The company headquarters is in Boca Raton , Florida ; corporate sales and marketing offices are in Westminster , Massachusetts , and the company has ...
The New York Fire Department reported about 1:45 a.m., the agency responded to a 5-alarm blaze at 2910 Wallace Avenue in the Bronx. According to a post on X, NYFD reported arriving crews found ...
TikTok star Beandri Booysen, known for her inspirational social media videos, has died. She was 19. On Wednesday, Dec. 18, Beandri's mom, Bea Booysen, confirmed on Facebook that the teenager had ...
Essentials of Fire Fighting is a fire service training manual produced by Fire Protection Publications (FPP) and the International Fire Service Training Association (IFSTA). Fire Protection Publications is a department of Oklahoma State University College of Engineering, Architecture, and Technology (CEAT) [ 1 ] in Stillwater, Oklahoma [ 2 ...
Trump said he’s heard that the number of autism cases has dramatically increased from more than one in 100,000 about 30 years ago to “one in 100” now.
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 ...