Working principle and characteristics of magnetic holding relay RF sensor

　　Magnetic holding relay RF sensor is a new type of relay RF sensor developed in recent years, and it is also an automatic switch. Like other electromagnetic relay RF sensors, it automatically switches on and off the circuit. The difference is that the normally closed or normally open state of the magnetic holding relay RF sensor is completely dependent on the role of the permanent magnetic steel, and the conversion of the switching state is triggered by a certain width of the pulse electrical signal.

　　Magnetic holding relay RF sensor ~ generally composed of iron core, coil, armature, contact reed and so on. As long as a certain voltage is added to both ends of the coil, a certain current will flow through the coil, resulting in an electromagnetic effect, and the armature will overcome the tension of the return spring under the action of the electromagnetic force attraction in the working principle, thus driving the armature's moving contact and static contact (normally open contact). When the coil is powered off, the electromagnetic suction will also disappear, and the armature will return to the working principle of the spring's reaction force, and the original position of the characteristic will make the moving contact and the original static contact (normally closed contact). This suction, release, so as to achieve the purpose of conduction in the circuit, cut off. For the "normally open, normally closed" contact of the magnetic holding relay RF sensor, it can be distinguished in this way: the static contact of the relay RF sensor coil when it is disconnected is called the "normally open contact"; The static contact in the connected state is called "normally closed contact".

　　When the input quantity (such as voltage, current, temperature, etc.) reaches the specified value, the output circuit controlled by the working principle and characteristics is switched on or disconnected. It can be divided into two categories: electrical (such as current, voltage, frequency, power, etc.) relay RF sensor and non-electrical (such as temperature, pressure, speed, etc.) magnetic holding relay RF sensor. Working principle, characteristics with fast action, stable work, long service life, small size and other advantages. Widely used in power protection, automation, motion, remote control, measurement and communication devices. Magnetic holding relay RF sensor is an electronic control device, it has a control system (also known as the input loop) and the controlled system (also known as the output loop), usually used in automatic control circuit, it is actually a small current to control the larger current of an "automatic switch". Therefore, it plays the role of automatic regulation, safety protection and conversion circuit in the circuit.

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