Electromagnets & Solenoids
Electromagnets are a non-permanent magnets that produced magnetic field. The magnetic field is created by a flow of an electric current through the coil. The magnetic field disappears when the current ceases (or in the case electromagnets of a permanent electromagnet, the magnetic field is present until a current is applied).
As a current is passed through the coil, small magnetic regions within the material, called magnetic domains, align with the applied field. Therefore, causing the magnetic field strength to increase. As the current is increased, all of the domains eventually are aligned, a condition called saturation.
The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be rapidly manipulated. By controlling the strength of the electric current, the magnetic field will have a wide range of values . However, a continuous supply of electrical energy is required to maintain the field operative (as noted, the exact reverse is true for a permanent electromagnet).
In applications where a variable magnetic field is not required, permanent magnets are generally superior. (Additionally, permanent magnets can be manufactured to produce stronger fields than an electromagnet of a similar size.)
Electromagnets are used in many situations where a rapidly- or easily-variable magnetic field is desired. An example of this would be the deflection of charged particle beams (cathode ray tube and mass spectrometer fall into this category).
MPCO has a set of standard round and rectangular electromagnets sizes which are detailed in the product sheets on this site. We also specialize in custom-made electromagnets.
MPCO sells Ac & DC solenoids. We have standard D frame and cylinder solenoids available and we also can design new custom made solenoids or customized standard product to customer requirements. Solenoids are used in many applications: Valves, generators, security doors, beverage dispensing equipment, printing equipment, medical equipment,gaming equipment, office equipment, vending equipment and more.
Permanent Two Side Eyebolts Ring Search NdFeB Magnet for Fishing, 100KG Double-Way Fishing Neodymium Search Magnet, Two-ways Pot Magnet With M10 M8 Eyelet, Treasure Salvage Magnets Permanent Two Side Eyebolts Ring Search NdFeB Magnet for Fishing1 00KG Item No. MPSM-FM100*2 series Recovery Holding Magnets – Part No.: MPSM-FM100*2 Diameter D – 67 mm Height H […]
300KG Double-Way Ring Fishing Neodymium Search Magnet, Double Sides Neodymium Underwater Retrieval Magnet, Two-Sides Cup Magnet With M10 Eyelet, Treasure Salvage Hunting Permanent NdFeB Pot Magnets 300KG Double-Way Ring Fishing Neodymium Search Magnet 300KG Item No. MPSM-FM300*2 series Recovery Holding Magnets – Part No.: MPSM-FM300*2 Diameter D – 94 mm Height H – 35 mm […]
Double Sides Neodymium Underwater Retrieving Magnet, Neodymium Fishing Magnets with Two-way Eyebolt 800KG, Double Sides Cup Magnet With 304 M12 Eyelet, Treasure Salvage Hunting Search Permanent NdFeB Pot Magnets Double Sides Neodymium Underwater Retrieving Magnet 800KG Item No. MPSM-FM800*2 series Recovery Holding Magnets – Part No.: MPSM-FM800*2 Diameter D – 135 mm Height H – […]
Steel Plate Colorful Pot Magnets with 304SS Eyebolt, Single Eyebolt Search Magnets, Super Strong Fishing Pot Magnet With Eyelet for Rescue Salvage Hut, Holding Pot Magnets, Underwater steel plate permanent lifting colorful pot magnet Steel Plate Colorful Pot Magnets with 304SS Eyebolt Item No. MPCOSFM-15 Product Materials: NdFeB Magnets + Steel plate + 304 stainless […]