Electromagnetic Solenoids are electromagnetic switches with a movable core that converts current flow into mechanical movement.
In a (pulling) type solenoid, the magnetic field pulls a core into a coil. These solenoids are called magnetic switches. A pull-in coil "pulls" the core into the coil, and a hold-in coil (holds) the core in place.
In a (push-pull) type solenoid, a permanent magnet is used for the core. By changing the direction of current flow, the core is (pulled in) or (pushed out). A typical use is on electric door locks
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Description
Solenoids are electromagnetic switches with a movable core that converts current flow into mechanical movement.
In a "pulling" type solenoid, the magnetic field pulls a core into a coil. These solenoids are called magnetic switches.
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