First ask everyone, do you know the role of the magnetic switch? In daily life, a variety of items are convenient, or feel, if you have not heard of the magnetic switch, you must know the security door or TV and other used a variety of sensors, it uses the cylinder live and function, to bring people needs and convenience, if you are also a person who likes practice, then you must also be interested in this, want to understand the friends, Share with us the relevant knowledge of magnetic switches.
The magnetic switch is used to detect the position of the cylinder piston, that is, to detect the motion stroke of the piston. The magnetic switch can feedback the position of the cylinder piston rod, and the feedback signal can be used to control the action of other components; It can also control the stroke of the cylinder, for example, the full stroke of the cylinder is 100, and the stroke can be adjusted to 80; Installing multiple magnetic switches can also realize the cylinder to stop at multiple points (but the stopping accuracy is not high).
Classification of SMC magnetic switches
SMC magnetic switches can be divided into two types: contact type and contactless type. SMC D-? Series magnetic switch,? There is no mark or A, B, C, E, Z is the contact type, F, G, H, J, K, M, P, Y is the contactless type. Contact type no leakage current exists. Non-contact magnetic switch because there is no moving parts, the life is semi-permanent, but there is leakage current. SMC magnetic switch can also be divided into two wire system, three wire system (which is divided into NPN, PNP two), four wire system (less used). In addition, the wire length standard of the magnetic switch is 0.5 meters. But you can also choose 3 meters or 5 meters.
SMC magnetic switch, D-C73, SMC magnetic switch installation, BJ2-012 magnetic switch means to be induced by a magnet, this “magnetic” is a magnet, there are several kinds of magnets, commonly used magnets on the market are rubber magnetic, permanent magnet ferrite, sintered NdFeb and so on. The switch is the reed tube. Reed tube is the abbreviation of dry reed tube, is a passive electronic switch element with contacts, has the advantages of simple structure, small size and easy control, its shell is generally a sealed glass tube, the tube is equipped with two iron elastic reed plate, but also filled with an inert gas called metal rhodium.
There are several kinds of magnets, and the commonly used magnets on the market are rubber magnetic, permanent magnet ferrite, sintered Ndfeb and so on. The switch is the reed tube. Reed tube is the abbreviation of dry reed tube, is a passive electronic switch element with contacts, has the advantages of simple structure, small size and easy control, its shell is generally a sealed glass tube, the tube is equipped with two iron elastic reed plate, but also filled with an inert gas called metal rhodium. Normally, the two reeds in the glass tube made of special materials are separated. When a magnetic substance is close to the glass tube, under the action of the magnetic field line, the two reeds in the tube are magnetized and attract and contact each other, and the reeds will attract together, so that the circuit connected by the junction is connected. After the external magnetic force disappears, the two reeds are separated due to their own elasticity, and the line is disconnected. Therefore, as a line switch device controlled by magnetic field signals, reed tube can be used as a sensor for counting, limiting, etc. (mainly used in the production of door magnetic and window magnetic in security systems), and is also widely used in various communication equipment. In practical use, permanent magnets are usually used to control whether the two metal sheets are connected or not, so it is also called “magnetron”.
Reed tube is also called magnetron, it is similar to the Hall element, but the principle and nature are different, is a switch element controlled by magnetic field signal, no magnetic disconnect, can be used to detect the state of circuit or mechanical motion, another magnetic switch is the market said proximity switch, door magnetic switch, also known as induction switch, It has a well-made mold and a standard size plastic casing, and the reed tube is filled inside the black casing and the wire is drawn out and the other half of the plastic casing with the magnet is fixed at the other end and when the magnet is near the switch with the wire, the switch signal is emitted! The general signal distance is 10mm connected, this product is widely used in security doors, household doors, printers, fax machines, telephones, and other electronic instruments and equipment above. There is also a magnetic switch in a closed metal or plastic tube, set one or more points of the magnetic spring switch, and then the pipe through one or more, hollow and internal with a ring magnet float, and the use of fixed rings, control the float and magnetic spring switch in the relevant position, so that the float in a certain range of up and down. The magnet in the float ball is used to attract the contact of the magnetic spring switch to produce the action of opening and closing.
The above is about the relevant introduction of the magnetic switch, if you want to know more about the relevant information, please pay more attention to the Fuwu home network, Fuwu home network will provide you with more complete, more detailed and updated information.
