German oehlbach plug oehlbach model oehlbach price

oehlbach plug is a common line or path used in computers to connect various functional components and transmit data between them. In computer systems, buses can be classified according to the objects they connect: chip bus, also known as device-level bus, which is the bus inside the central processor chip. Internal bus, also known as system bus or board-level bus, which is the transmission path between various functional components of the computer; the microcomputer bus is usually called the internal bus. External bus, also known as communication bus, which is the transmission path between computer systems, or between the computer host and peripheral devices. In computer systems, the common path for transmitting information between various components is called the bus, and microcomputers use a bus structure to connect various functional components.

oehlbach plug introduction

Any microprocessor must be connected to a certain number of components and peripheral devices. However, if each component and every peripheral device were directly connected to the CPU via separate sets of wires, the wiring would become intricate and complex, making implementation difficult or even unfeasible. To simplify hardware circuit design and system architecture, a common set of lines, equipped with appropriate interface circuits, is used to connect various components and peripheral devices. This shared connection pathway is known as a bus. The bus structure facilitates the expansion of components and devices, especially when unified bus standards are established, enabling easy interconnection between different devices. In microcomputers, buses are generally categorized into internal buses, system buses, and external buses. The internal bus connects peripheral chips within the microcomputer to the processor for chip-level interconnection. The system bus connects plug-in boards to the system board within the microcomputer for board-level interconnection. The external bus connects the microcomputer to external devices, allowing the microcomputer, as a device, to exchange information and data with other devices through this bus for device-level interconnection. Additionally, in a broad sense, computer communication methods can be divided into parallel communication and serial communication, with the corresponding communication buses referred to as parallel buses and serial buses. Parallel communication offers high speed and good real-time performance but requires many signal lines, making it unsuitable for miniaturized products. Although serial communication has a lower rate, it is simpler, more convenient, and more flexible in microprocessor circuits where data communication throughput is not very high. Serial communication is generally classified into asynchronous mode and synchronous mode. With the development of microelectronics and computer technology, bus technology continues to evolve and improve, resulting in a wide variety of computer bus technologies, each with its own characteristics.

oehlbach plug material

1) The material for female or male terminals shall be copper alloy, or plated copper alloy, nickel, or nickel alloy. [Exception: If the structure of the electrical appliance or apparatus permits, the female or male terminals may be plated sheet metal, or non-plated corrosion-resistant alloy. 2) If formed female terminals or trimmed male terminals appear in the form of terminal strips, and when the terminal strip is continuously fed into the processing tool, the terminals are crimped and separated from the strip, then in this case, the edges where the terminals join the strip do not require plating. The standard terminals used in temperature and thermal cycling tests shall be tin-plated sheet steel or corrosion-resistant steel. According to the Rockwell 30T hardness scale, their hardness shall be Rockwell hardness 68 ± 5. Exception: If the female terminal is only suitable for connecting to male terminals made of copper alloy, then standard terminals made of C26000 copper alloy shall be used for testing. 2.3 According to the Rockwell 30T hardness scale, the hardness of standard terminals made of brass shall be 62 ± 7.

oehlbach plug main parameters

1) Rated Voltage: Rated voltage, also known as operating voltage, mainly depends on the insulation materials used in the connector and the spacing between contact pairs. Certain components or devices may fail to perform their intended functions when operated below their rated voltage. The rated voltage of a connector should effectively be understood as the maximum operating voltage recommended by the manufacturer. In principle, connectors can operate normally at voltages below the rated voltage. The author tends to select the rated voltage reasonably based on the connector's withstand voltage (dielectric strength) specifications, according to the usage environment and safety level requirements. That is to say, with the same withstand voltage specification, different maximum operating voltages can be applied depending on the usage environment and safety requirements. This aligns better with objective usage conditions. 2) Rated Current: Also known as operating current. Similar to rated voltage, connectors generally operate normally at currents below the rated current. In the connector design process, the rated current requirement is met through thermal design, because when current flows through the contact pair, heat is generated due to conductor resistance and contact resistance. When the heating exceeds a certain limit, it will damage the connector's insulation and cause softening of the surface plating on the contact pair, leading to failure. Therefore, limiting the rated current effectively means limiting the temperature rise inside the connector to not exceed the designed specified value. An issue to note during selection is that for multi-core connectors, the rated current must be derated. This deserves more attention in high-current applications. For example, for φ3.5mm contact pairs, the rated current is generally specified as 50A, but for 5 cores, it must be derated by 33%, meaning the rated current per core is only 38A. The greater the number of cores, the larger the derating magnitude. 3) Contact Resistance: Contact resistance refers to the resistance generated at the contact interface between two conductive contacts. Two issues should be noted during selection. First, the contact resistance specification of a connector is effectively the contact pair resistance, which includes both the contact resistance and the conductor resistance of the contact pair. Since the conductor resistance is usually small, the contact pair resistance is often referred to as contact resistance in many technical specifications. Second, in circuits carrying small signals, attention must be paid to the conditions under which the given contact resistance specification was tested, because oxide layers, oil stains, or other contaminants may adhere to the contact surfaces, creating film resistance. As the film thickness increases, the resistance rises rapidly, making the film a poor conductor. However, the film layer may undergo mechanical breakdown under high contact pressure, or electrical breakdown under high voltage and high current. For some small-volume connectors, the designed contact pressure is quite low, and the application levels are only in the range of mA and mV, making it difficult for the film resistance to break down, which may affect signal transmission. One of the contact resistance test methods in GB5095 "Basic Test Procedures and Measurement Methods for Electromechanical Components Used in Electrical Equipment," specifically the "Contact Resistance - Millivolt Method," stipulates that to prevent breakdown of the insulating film on the contacts, the DC or AC peak open-circuit electromotive force of the test circuit shall not exceed 20mV, and the DC or AC test current shall not exceed 100mA. 4) Shielding: In modern electrical and electronic equipment, the increasing density of components and their related functions imposes strict limits on electromagnetic interference. Therefore, connectors are often enclosed in metal housings to prevent internal electromagnetic radiation or interference from external electromagnetic fields. At low frequencies, only magnetic materials provide significant shielding against magnetic fields. In this case, there are specific requirements for the electrical continuity of the metal housing, which relates to the housing contact resistance.

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