German engel plug engel model engel price

engel plugs are accessory products used to achieve electrical connections and are classified industrially as connectors. As the level of industrial automation increases and industrial control requirements become stricter and more precise, the consumption of terminal blocks is gradually rising. With the development of the electronics industry, the scope of use for terminal blocks is expanding, and their varieties are increasing. Besides PCB board terminals, the most widely used types include hardware terminals, nut terminals, spring terminals, and so on. Terminal blocks are applied to facilitate wire connections; they are essentially a piece of metal enclosed in insulating plastic, with holes at both ends for inserting wires and screws for tightening or loosening. For example, two wires may sometimes need to be connected and sometimes disconnected; in such cases, terminals can be used to connect them, allowing for disconnection at any time without the need for welding or twisting them together, which is very convenient and fast. Moreover, they are suitable for interconnecting large numbers of wires. In the power industry, there are dedicated terminal strips and terminal boxes filled with terminal blocks, including single-layer, double-layer, current, voltage, standard, and disconnectable types. A certain crimping area is required to ensure reliable contact and to guarantee that sufficient current can pass through.

engel plug classification

Terminal blocks can be divided into European-style terminal block series, pluggable terminal block series, transformer terminal blocks, building wiring terminals, barrier-type terminal block series, spring-type terminal block series, DIN rail terminal block series, feed-through terminal block series, and optocoupler terminal blocks. Pluggable types consist of two parts connected by plugging: one part clamps the wire and is then plugged into the other part, which is soldered onto the PCB board. Based on this mechanical principle, the anti-vibration design ensures long-term gas-tight connections and product reliability. Assembly ears can be added to both ends of the socket; these ears largely protect the contacts and prevent poor alignment, while the socket design ensures correct insertion into the housing. Sockets can also feature assembly latches and locking latches. Assembly latches provide more secure fixation to the PCB board, and locking latches can lock the housing and socket after installation. Various socket designs can accommodate different insertion methods into the housing, such as horizontal, vertical, or angled orientation relative to the printed circuit board, allowing selection based on customer requirements. Both metric and standard wire gauges can be selected, making this the best-selling terminal type on the market. Barrier-type terminals enable safe, reliable, and effective connections, especially in high-current and high-voltage environments. Spring-type terminals are a new type utilizing spring devices, widely used in global electrical and electronic engineering industries: lighting, elevator control, instruments, power supplies, chemical, and automotive power applications. DIN rail mounting adopts reliable screw connection technology, electronic fuse technology, and the latest electrical connection technology, widely used in power electronics, communications, electrical control, and power supply fields. DIN rail types use wire clamping and unique self-locking screw designs, making wire connections reliable and safe. This series features an aesthetically pleasing appearance and can be equipped with various accessories, such as short-circuit bridges, marking strips, and end plates. Feed-through types adopt screw connection technology, with insulation material made of PA66 (flammability rating: UL94, V-0), and connectors made of high-quality, highly conductive metal materials.

engel plug types

Common data buses include ISA, EISA, VESA, PCI, etc. The "address bus AB" is specifically used to transmit addresses. Since addresses can only be transmitted from the CPU to external memory or I/O ports, the address bus is always unidirectional and tri-state, which differs from the data bus. The bit width of the address bus determines the size of the memory space directly addressable by the CPU. For example, if an 8-bit microcomputer has an 16-bit address bus, its maximum addressable space is 2^16=64KB. The address bus of a 16-bit microcomputer (x-bit processor refers to the number of bits (1, 0) the microprocessor can process in one clock cycle, i.e., the word length) is 20 bits, and its addressable space is 2^20=1MB. Generally, if the address bus is n bits, the addressable space is 2^n bytes. The "control bus CB" is used to transmit control signals and timing signals. Among control signals, some are sent by the microprocessor to memory and I/O interface circuits, such as read/write signals, chip select signals, and interrupt response signals; others are fed back to the CPU by other components, such as interrupt request signals, reset signals, bus request signals, and device ready signals. Therefore, the transmission direction of the control bus depends on the specific control signal, and information is generally bidirectional. The bit width of the control bus is determined by the actual control needs of the system. In practice, the specific situation of the control bus mainly depends on the CPU. According to the method of data transmission, buses can be divided into serial buses and parallel buses. In serial buses, binary data is sent bit by bit through a single data line to the destination device; parallel buses typically have more than 2 data lines. Common serial buses include SPI, I2C, USB, and RS232. According to whether the clock signal is independent, buses can be divided into synchronous and asynchronous buses. The clock signal of a synchronous bus is independent of the data, whereas the clock signal of an asynchronous bus is extracted from the data. SPI and I2C are synchronous serial buses, while RS232 uses an asynchronous serial bus.

engel plug applications

Each bus has its application areas. For example, FF and PROFIBUS-PA are suitable for process control in industries such as petroleum, chemical, pharmaceutical, and metallurgy; LonWorks, PROFIBUS-FMS, and DevieceNet are suitable for buildings, transportation, agriculture, and other fields; DeviceNet and PROFIBUS-DP are suitable for manufacturing. However, these divisions are not absolute, as each fieldbus strives to expand its application areas and penetrate each other's markets. Most fieldbuses are backed by one or several large multinational companies that have established corresponding international organizations to expand their influence and gain more market share. For example, PROFIBUS is mainly supported by Siemens Company, which established the PROFIBUS International User Organization. WorldFIP is mainly backed by Alstom Company, which established the WorldFIP International User Organization.

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