Application of RF sensor in AC electromagnetic relay

　　First, the structure of AC electromagnetic relay RF sensor

　　Ac electromagnetic relay RF sensor application structure: as shown in the figure, A is an electromagnet, B is an armature, C is a spring, D is a moving contact, E is a static contact. The working circuit of AC electromagnetic relay RF sensor can be divided into low voltage control circuit and high voltage working circuit. The control circuit is composed of electromagnet A, armature B, low voltage power supply E1 and switch. The working circuit is composed of a small light bulb L, a power supply E2 and a static contact and a moving contact equivalent to a switch. Connect the working circuit,

　　Second, the working principle of AC electromagnetic relay RF sensor

　　Working principle: When the electromagnet is energized, the armature is sucked down to make D and E contact, and the working circuit is closed. When the electromagnet loses its magnetism, the spring pulls the armature up and cuts off the working circuit.

　　Conclusion: The application of AC electromagnetic relay RF sensor is to use electromagnet to control the on-off switch of working circuit.

　　Under normal conditions, D and E are not connected, and the working circuit is disconnected. Press down the moving contact with your finger, then the working circuit between D and E is connected by the contact between the moving contact and the static contact, and the small light bulb L shines. Close the switch S, the armature is sucked down by the electromagnet, and the moving contact is in contact with the two static contacts at the same time, so that D and E are connected. At this time the spring is stretched, the working circuit is observed to be switched on, and the small bulb L shines. When the switch S is disconnected, the electromagnet loses its magnetism and is not attractive to the armature. The armature returns to its original position under the pull of the spring, the moving contact is separated from the static contact, the working circuit is cut off, and the small bulb L does not emit light.

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