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中文简体An electromagnetic relay is a device that controls high voltage. This device is used for a variety of electrical applications. They are very simple and have two basic components: the armature and the coil. It is the foundation of electronic technology.A simple electromagnetic relay has an iron yoke and a movable iron armature. The iron yoke acts as a low-reluctance path for magnetic flux. The armature moves the contacts between stationary contacts.
Reed relays are a type of electromagnetic relay that operates with only 100 to 300 milliwatts. They are also used in telephone equipment. With this type of relay, the switch opens when the magnetic field is removed and closes when it is applied. These relays have a long life expectancy of over 50,000,000 operations.One of the most important features of this type of relay is the air gap between the core and armature poles. This is because the relay contacts are subject to fusing together. If they fuse together, they can cause a hazardous situation.
Electromagnetic relays are also used for circuit protection. If a relay is connected to a high voltage circuit, the contacts can be triggered by a spike. Some industries use high-powered electromagnets for lifting purposes.Another common type of electromagnetic relay is the split-phase induction motor. This type of relay operates on the principle of a cyclotron, which uses a large magnet to produce moderate fields.The armature of an electromagnetic relay has two springs to hold the armature in place. This type of relay is used in avionics and other industrial applications.
