Question

Electromagnetic back door opener meaning

Answer 1

Typically the electromagnet portion of the lock is attached to the door frame and the mating armature plate is attached to the door. The two components are in contact when the door is closed. when the electromagnet is energized, a current passing through the electromagnet creates a magnet flux that causes the armature plate to attract to the electromagnet, creating a locking action. Because the mating area of the electromagnet and armature is relatively large, the force created by the magnetic flux is strong enough to keep the door locked.