|
Arabic
Bengali
Chinese
English
French
German
Hebrew
Hindi
Italian
Japanese
Korean
Malay
Polish
Portuguese
Spanish
Turkish
Ukrainian
Vietnamese|
ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING Popular connectors of foreign production. Reference data
Encyclopedia of radio electronics and electrical engineering / Reference materials
The connectors are designed for operation in various climatic zones of the planet, including those with high humidity, they are reliably protected from dust and water splashes, resistant to strong temperature changes, shock and vibration. In the standard version, to increase corrosion resistance, the contacts of the connectors are coated with a layer of silver, however, products with gold-plated contacts are also produced, used when working in an atmosphere of increased aggressiveness (acid vapors, etc.). The number of standard ratings of the MS series connectors is very large. In addition to it, there is the 97 series, almost identical to it, designed for the needs of the civilian industry, as well as the 97B series, where a bayonet is used instead of a threaded connection of the connector pads. Here we will consider in detail only some of the most common types of MS series connectors designed for cable-to-block and cable-to-cable connections. Detailed information can be found on the website of the manufacturer "Amphenol" amphenol.com. Due to the large number of types of manufactured connectors, their classification is very difficult. Connectors are distinguished by the type of housing, as well as the type and orientation of the contact inserts. The standard conditional marking of the connector can be represented as follows: ABCD-E-FG-H. The symbol A indicates the product series (MS, 97 or 97B). Here we will consider only the MS series. The sign B denotes the number 3 or 4, and the triple corresponds to a connector with solder pins, and the four corresponds to a crimp. The sign C is a three-digit number indicating the type of housing of the connector block. Three types are most common: 101 - female block for mounting on a cable (Fig. 1), 102 - female on a block (Fig. 2) and 106 - pin on a cable (Fig. 3). The symbol D is a conventional letter designation of the class of the connector body - A, E, F or R. The next sign - E - indicates the type of connector, expressed either as a numeric or alphanumeric combination. The symbol F denotes a number that determines the type of contact insert (a rubber cylinder with contacts pressed into its holes). Strictly speaking, the complete type of insert is determined by position F together with position E, i.e. the type of insert for a particular type of connector. The symbol G denotes the type of contacts of the block: pin - P or socket - S. Note that the type of contacts is in no way related to the type of housing of the connector block. A large number of types of plug-in inserts makes it possible to avoid erroneous connections, since it is possible to ensure the individuality of each connector in the designed device. However, if it contains many connectors with the same number of pins and voltage and current requirements, it may still be difficult to ensure proper mating. In such rare cases, you can use connectors with different orientation of the inserts relative to the guiding key-protrusion (or key-slot). The orientation of the insert is reflected in the H symbol of the connector's conditional marking. The absence of this symbol means that the key orientation of this connector is standard. Along with the standard orientation, there are four non-standard ones. For them, one of the letters W, X, Y or Z is put in place of the H symbol. These varieties differ in the angle of rotation of the key relative to its standard position.
The end face of the body of the socket block (Fig. 1), facing the connection, has the shape of a hollow cylinder with a mating thread on the outer surface and a protrusion key that specifies the orientation on the inner. Inside this cylinder there is a rubber insert with contacts made in the form of sockets. The docking end of the body of the pin block (Fig. 3) is made in the form of a hollow cylinder, inserted into the socket block with a slot key under the orienting ledge. The same rubber insert with pin contacts is inserted inside the cylinder. Outside, a union nut is put on this cylinder, which fixes the connection of the pads. It is a hollow cylinder with an annular stop at the rear end, freely rotating around the pad body. On the inner surface of the nut, a thread is cut in response to the thread on the socket block, and knurling is made on the outer surface. Under the nut, a rectangular rubber ring is put on the cylinder, which provides soft and tight contact of the connector pads. The body of the cable blocks is equipped with an embossed screw-on metal back cover with a conical shape with a clamp for fixing the cable (Fig. 4). A sealing insert is placed inside the lid. It is a cone of elastic rubber, truncated on both sides, with holes along the axis. Their number is equal to the number of contacts. On the cable side, these holes have a diameter that allows you to tightly crimp the conductors. On the side of the block, the diameter of the holes is larger - they include the leads of the contacts of the insert. Between the insert and the cover there is a plastic sleeve with a reciprocal taper for the insert (the sleeve, insert and sealing rings are not shown in the figures). At the rear end of the cover (from the side of the cable), two brackets are mounted on two brackets, which, with the help of two coupling screws, tightly cover the cable, fixing it relative to the block. This is the final operation in the process of mounting the connector. All body parts of connectors are made of duralumin. Coupling screws - steel. Class E connectors are the most common according to the housing class (they are described in this article). Class F is distinguished by the fact that the sealing rubber ring has a round section, which provides better tightness. Class A cable connector housings do not have a back cover or sealing insert. Class R connector housings are shorter and their back cover does not have a clip to secure the cable. Connector types are distinguished by the diameter of the contact insert and the dimensions of the body parts. On fig. Tables 1-4 show the main classification sizes in letter designation, and Table 1 summarizes the numerical values of these sizes for the most common types of connectors. Table 1
The type of contact insert (symbol F in the marking) determines its diameter, the number of contacts, their location and diameter. There are more than 150 types of contact inserts. Let's take a look at some of the most commonly used ones. In table. 2 shows the characteristics of the inserts. The orientation of the inserts relative to the key is standard.
In the cells of the table, the types of inserts are conventionally shown, the type of each of them is indicated. The letter in the designation of the insert type indicates the voltage class of the connector (Table 3). Table 3
Each connector block comes to the consumer complete with a plastic plug that protects the contacts from damage and dust. The permissible current through the connector pins depends on the diameter of the male part of the connection. Table 4 summarizes the values of the maximum, operating and test current, as well as the maximum voltage drop across the contact.
It was said above that, in addition to the standard position of the key - the protrusion and the key-slot on the connector body, there are four non-standard ones (symbol H in the marking). The values of the key rotation angles, denoted by the letters W, X, YZ, depend on the type of insert; the lookup table is omitted here.
Traffic noise delays the growth of chicks
06.05.2024 Wireless speaker Samsung Music Frame HW-LS60D
06.05.2024 A New Way to Control and Manipulate Optical Signals
05.05.2024
▪ 200MP ISOCELL HP1 image sensor ▪ Pocket electronic encyclopedia ▪ An alternative to SMS messages will appear in Europe
▪ section of the site Art video. Article selection ▪ article Russian language. Crib ▪ article Which nation has a tradition of celebrating the age of 83? Detailed answer ▪ article Rogue. Standard instruction on labor protection ▪ article Miracle whistle. Focus Secret
Home page | Library | Articles | Website map | Site Reviews
www.diagram.com.ua | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below are the connectors of the MS series (corresponding to the requirements of the American military standard), which is actually the development of the domestic ShR series. These connectors are used both in signal paths and in power circuits, including high-current (up to 150 A) and high-voltage (up to 4 kV). The fact that the series in question was developed for the needs of the military industry is in itself evidence of the high reliability of the products.
See other articles Section 
Latest news of science and technology, new electronics:
All languages of this page