What is the magnetic switch?
The magnetic switch is a switching device that is induced by a magnet. The commonly used magnets are sintered neodymium iron boron, rubber magnetic and permanent ferrite. The switch is a dry reed pipe, referred to as a reed switch, which is a passive electronic switch component with contacts. The outer casing is usually a sealed glass tube filled with inert gas and equipped with two irons. Quality elastic reed plate.
Performance comparison of magnetic switches
The performance comparison of the switch, Xiaobian uses the contactless and contacted magnetic switch for performance comparison. Let's take a look at the performance of the contactless. In the leakage current, the 2-wire type is below 1 mA, the 3-wire type is below 100 mA, the action time per second is less than or equal to 1, and its service life is long. It can be used for high frequency. Working in the circuit, the impact resistance is 500m/2S; while the magnetic switch with contact has no leakage current, the action time is 1.2ms, the service life is only tens of millions of times, and the impact resistance is about 300m/2S. Both can be used in relays, integrated circuits, and small solenoid valves.
What is the price of the magnetic switch?
The magnetic switch can be used to detect the state of circuit or mechanical motion. Another type of magnetic switch is the proximity switch, magnetic switch, and inductive switch on the market. This product is widely used in security doors, home doors, printers, fax machines. , telephones, and other electronic equipment. The magnetic switch is a proximity sensor that responds to a permanent magnetically active distance greater than the inductive sensor. The response curve is related to the direction of the permanent magnetic field.
The magnetic switch, also known as the non-contact travel switch, is not only a stroke control and limit protection, but also a non-contact type detection device, which is used for detecting part size and speed measurement, and can also be used for frequency conversion counters and variable frequency pulse generation. Automatic connection of liquid level control and machining programs. Features include reliable operation, long life, low power consumption, high re-positioning accuracy, high operating frequency and adaptable to harsh working conditions.
Magnetic switch and capacitive proximity switch. Because these two proximity switches have lower environmental requirements. When the object to be tested is a conductive object or an object that can be fixed on a metal object, the eddy current proximity switch is generally used because of its high response frequency, good anti-interference performance, wide application range, and low price. If the object to be tested is non-metal or metal, liquid level, powder height, plastic, tobacco, etc. A capacitive proximity switch should be used. This switch has a low response frequency but good stability. Therefore, it is widely used in tobacco machinery on demanding facsimile machines. In anti-theft systems, automatic doors typically use pyroelectric proximity switches, ultrasonic proximity switches, and microwave proximity switches. Sometimes, in order to improve the reliability of recognition, the above several proximity switches are often used in combination. The price is about 20-80 RMB.
Magnetic switch other series
Like other switches, the magnetic switch also has its own other product series. There are two types of contacts, such as joints and nodes, which have different working functions. Therefore, the scope of use of the two magnetic switches is different. There are some kinds of door magnetic switches and proximity switches mentioned in the market, which are all kinds of inductive switches, and the magnetic switches are also used as inductive switches because they are controlled by magnetic fields. In addition, there is a magnetic switch, which is sealed in a plastic pipe or a metal, and is provided with a multi-point, one-point spring switch, a pipe through which a spherical floating ball is mounted, and a ring of a fixed float ball is used to control the switch. The corresponding position of the float ball allows the float to float within a certain range, and the magnetic force of the float ball is used to attract the contact of the spring switch, so that the magnetic switch can open and close.