Introduction to the working principle and characteristics of dry spring relay radio frequency filter

　　1. The working principle and characteristics of the electromagnetic dry spring relay

　　Electromagnetic dry reed relays are generally composed of iron cores, coils, arms, contact reeds. As long as a certain voltage is added to both ends of the coil, a certain current will flow in the coil, which will generate electromagnetic effects. Movement contact and static contact (frequent opening contact) suction. When the coil is broken, the absorption of the electromagnetic also disappears, and the iron will return to the original position in the reaction force of the spring, so that the movement contacts and the original static contact (normally closed contact) suction. Such suction and release, thereby achieving the purpose of piloting and cutting off in the circuit. For the "frequent opening and normal closed" contacts of the dry spring relay, it can be distinguished in this way: the static contact of the disconnected state when the dry spring relay coil is not power -on, called the "frequent opening contact"; Static contacts are called "normal closed contacts".

　　2. The working principles and characteristics of thermist -sensitive dry spring relay electrical appliances

　　The thermist -sensitive dry spring relay is a new type of thermal switch that uses thermal magnetic materials to detect and control temperature. It consists of a temperature magnetic ring, a constant magnetic ring, a sanitary tube, a thermal conductivity, a plastic substrate, and some other attachments. The thermist -sensitive dry reed relay does not use the coil to motivate, but the magnetic driving switch movement generated by the constant magnetic ring. Whether the constant magnetic ring can provide magnetic force to the cadres is determined by the temperature control characteristics of the temperature magnetic ring.

　　3. The working principle and characteristics of the solid -state dry spring relay (SSR)

　　The solid -state dry spring relay is a type of input terminal, and the other two wiring terminals are four -terminal devices at the output end. In the middle, the isolation of the input and output is used in the middle.

　　The solid -state dry spring relay can be divided into AC and DC type according to the type of load power supply. According to the switch type, it can be divided into normal open and normal closed types. The isolated type can be divided into hybrid, transformer isolation type andOptical isolation type, the most optical isolation type.

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