German OBO BETTERMAN plugs, OBO BETTERMAN models, OBO BETTERMAN prices

OBO BETTERMAN plugs are conductive devices that bridge two conductors in a circuit, allowing current or signals to flow from one conductor to another. They are widely used in various electrical circuits to connect or disconnect current or signals. This connection may be temporary and allow for easy plugging and unplugging, or it may be a permanent junction between electrical equipment or wires. Electronic connectors are devices for transmitting electronic signals (analog or digital signals), providing a separable interface to connect two sub-electronic systems, and are components used to complete electrical connections between circuits or electronic machines. Examples include power plugs/sockets, IC sockets, telephone line plugs, etc. They are widely used in the electronics industry. An electronic connector is an electromechanical system that provides a separable interface to connect two sub-electronic systems. Simply put, components used to complete electrical connections between circuits or electronic machines are called connectors, acting as a bridge between them. Electronics can serve as electrical/electronic transmission and connection components between circuits, components, and systems, enabling stable and reliable flow of power, signals, and current, while facilitating product assembly, maintenance, and replacement.

OBO BETTERMAN plug structure

Electrical connectors consist of fixed-end electrical connectors, i.e., female contacts (referred to as sockets), and free-end electrical connectors, i.e., male contacts (referred to as plugs). The socket is fixed to the powered component via its square (round) flange (some also use welding methods), while the plug is generally connected to the cable, achieving the plug-socket connection through a coupling nut. Electrical connectors are composed of three basic units: housing, insulator, and contact body. 1) Housing: The electrical connector housing refers to the outer shell of the plug and socket, the coupling nut, and the rear accessories. The housing protects internal parts of the electrical connector, such as the insulator and contacts (collectively referred to as pins and sockets), from damage. Positioning keyways on the top ensure proper alignment of the plug and socket. The coupling nut is used for connecting and separating the plug and socket. Rear accessories protect the wire termination points from damage and secure the cable. The housing also provides a certain degree of electromagnetic shielding. Housings are typically machined from aluminum alloy (machining, cold extrusion, die casting). Steel housings are mostly used for glass-sealed and high-temperature resistant electrical connectors. 2) Insulator: Composed of pin insulators, socket insulators, interface seals, wire seals, etc. It holds pins and sockets in their designated positions and ensures electrical insulation between contacts and between contacts and the housing. Sealing measures are achieved by adding interface seals and wire seals to the insulator to improve the environmental resistance of the electrical connector. To adapt to high temperature, low temperature, and flame retardancy requirements, and to ensure stable and reliable geometric dimensions of parts, insulators are mostly molded from thermosetting plastics. Interface seals and wire seals are formed by molding silicone rubber, etc. 3) Contact body: Contacts include male and female contacts, sometimes referred to as pins and sockets. Connection methods include soldering, crimping, press-fit, and wire wrapping, used to achieve circuit connections. Pins and sockets are key components of electrical connectors, directly affecting their reliability. Pins and sockets are mostly machined from elastic copper alloys with good conductivity, with silver or gold plating on the surface to achieve low contact resistance and corrosion resistance. Sockets generally include split-type sockets, wire spring sockets, crown spring sockets, and stamped sockets. Structural features include: environmental resistance, bayonet (quick) connection, multiple keyways (anti-misinsertion), crimped connection between contacts and wires (single-wire removal facilitates fault handling). The housing plus shielding ring ensures 360° electromagnetic interference shielding capability.

OBO BETTERMAN plug types

1) 232-C is a serial physical interface standard established by the American EIA (Electronic Industry Association). RS is the abbreviation for "Recommended Standard," 232 is the identifier number, and C indicates the revision number. The RS-232-C bus standard has 25 signal lines, including a main channel and an auxiliary channel. In most cases, the main channel is primarily used. For general duplex communication, only a few signal lines are required, such as one transmit line, one receive line, and one ground line. The RS-232-C standard specifies that the driver allows a capacitive load of 2500pF. The communication distance is limited by this capacitance. For example, when using a communication cable with 150pF/m, the maximum communication distance is 15m; if the capacitance per meter of cable decreases, the communication distance can increase. Another reason for the short transmission distance is that RS-232 uses single-ended signal transmission, which suffers from common ground noise and cannot suppress common-mode interference, so it is generally used for communication within 20m. 2) RS-485 bus: When communication distances range from tens of meters to over a kilometer, the RS-485 serial bus standard is widely adopted. RS-485 uses balanced transmission and differential reception, thus having the ability to suppress common-mode interference. Additionally, the bus transceiver has high sensitivity and can detect voltages as low as 200mV, allowing signal recovery over distances beyond a kilometer. RS-485 operates in half-duplex mode, meaning only one point can be in the transmit state at any time; therefore, the transmit circuit must be controlled by an enable signal. RS-485 is very convenient for multi-point interconnection, saving many signal lines. Applying RS-485 allows networking to form distributed systems, permitting up to 32 drivers and 32 receivers to be connected in parallel.

OBO BETTERMAN plug assembly

The northbridge chip on the motherboard is responsible for connecting components with the highest data throughput, such as memory and graphics cards, and links to the southbridge chip. The CPU connects to the northbridge chip via the front-side bus (FSB), and thereby exchanges data with memory and graphics cards through the northbridge chip. The front-side bus is the primary channel for the CPU to exchange data with external components; therefore, the data transfer capability of the front-side bus has a significant impact on overall computer performance. Without a sufficiently fast front-side bus, even a powerful CPU cannot significantly improve overall system speed. The maximum data bandwidth depends on the width of all simultaneously transferred data and the transmission frequency, i.e., data bandwidth = (bus frequency × data bit width) ÷ 8. The front-side bus frequencies achievable on a PC include 266MHz, 333MHz, 400MHz, 533MHz, and 800MHz. A higher front-side bus frequency indicates greater data transfer capacity between the CPU and the northbridge chip, allowing the CPU's capabilities to be fully utilized. CPU technology advances rapidly, with processing speeds increasing quickly. A sufficiently large front-side bus ensures adequate data supply to the CPU, whereas a lower front-side bus cannot provide enough data to the CPU, thereby limiting the performance of the CPU and becoming a system bottleneck.

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