History Fest electromagnet gold (Sturgeon) electromagnet. AD 1825 small electromagnet, Englishman William Stewart Kim (William Sturgeon magnet factory, 1783 -1850 years) will pass a current of magnet wire wound on the price of insulated rod, invented the electromagnet. American physicist Joseph Henry (Joseph Henry 1797 年 -1878 years) after learning of the news, in the soft core coil winding intensive use of the battery current is not after power, will be able to pick up a ton The iron. Solenoid with a core definition of internal use of electric current through a coil to make it like a magnet has a magnetic device called a solenoid (electromagnet). Usually made of a bar or horseshoe. Core magnetization easy to use, and easy to disappear magnetic soft iron or silicon to the system to do. Such magnetic solenoid when energized, power outages after the disappeared. Electromagnet has an extremely wide range of applications in daily life. Electromagnet invention also makes the generator power has been greatly improved. Application electromagnet has an extremely wide range of applications in daily life. Electromagnet is a current magnetic effect (electric magnetism) of an application, are closely connected, such as electromagnetic relays, electromagnetic crane, magnetic levitation trains and life. DC solenoids and solenoid can be divided into two types of AC solenoids. If use according to divide the electromagnet, can mainly be divided into the following five kinds: (1) traction magnet - mainly used for pulling mechanism to open or close the valves, to perform automatic control tasks. (2) lifting magnet - used as a lifting device for lifting steel ingot, steel, iron ore and other ferromagnetic materials. (3) the brake magnet - mainly used for motor parking brake in order to achieve an accurate aim. (4) Automatic electrical electromagnetic systems - such as electromagnetic relays and contactors electromagnetic system automatically switches the electromagnetic release and operating electromagnet and so on. (5) other uses electromagnets - such as grinding and electromagnetic sucker electromagnetic vibrator. Magnet magnet manufacturers _ _ Shandong Xin Tong new magnetic provided by the Dongguan City Tong Xin magnetic Limited. Xin Tong, Dongguan City, the new magnetic Limited (www.dgxtxmagnet.com/) strong, credible, in Dongguan, Guangdong magnetic materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the new Tong Xin magnetic and you hand into the brilliant, for a better future!