103013497 in stock German 103013497 electrical components 103013497 inventory

103013497 Electrical components are products whose raw material molecular composition is not altered during factory processing; these are referred to as components. Components belong to the category of devices that do not require an energy source. They include: resistors, capacitors, and inductors. Circuit-type components include diodes and resistors; connection-type components include connectors, sockets, connecting cables, and printed circuit boards (PCB). Devices are products whose raw material molecular structure is altered during factory production and processing. Devices are divided into active devices and discrete devices. The main characteristic of active devices is that they consume electrical energy and require an external power supply. Discrete devices are divided into bipolar junction transistors, field-effect transistors, thyristors, semiconductor resistors, and capacitors. shi

103013497 Electrical Component Classification

Based on structural differences, they are divided into full-availability line bundles, partial-availability line bundles, and link systems; based on service methods, they are divided into loss-system line bundles and waiting-system line bundles (see stochastic service systems); based on the number of traffic sources served, they are divided into infinite-traffic-source line bundles and finite-traffic-source line bundles. In telecommunication systems, equipment directly used for communication between users is mostly an infinite-traffic-source loss-system full-availability link system, while equipment used to control the connection process of communication devices is mostly an infinite-traffic-source waiting-system full-availability system. When the number of traffic sources is not large relative to the line bundle capacity, a finite-traffic-source full-availability system or partial-availability system is generally adopted. Based on the call behavior of traffic sources, i.e., whether a new call attempt is made after a call failure, line bundles can be divided into repeated-call systems and non-repeated-call systems. Actual communication systems all involve repeated calls; non-repeated-call systems are an approximation of repeated-call systems. ① Full-availability line bundle. If any service device (trunk line or key) in the line bundle can be used by any traffic source in the group of traffic sources it serves, such a line bundle is called a full-availability line bundle. ② Partial-availability line bundle. If any traffic source in the traffic source group can only use part of the service devices in the line bundle, such a line bundle is called a partial-availability line bundle. Partial-availability line bundles divide the traffic source group into several subgroups, performing grading multiple connections between the outlets of the traffic source group. This structure can be described by the example shown in the figure below.

103013497 Electrical Component Principles

Based on different application purposes, various types of thermometers have been designed and manufactured. The design principles include: the phenomenon of thermal expansion and contraction of solids, liquids, and gases under temperature influence; the change in pressure of gas (or vapor) at constant volume due to temperature differences; the thermoelectric effect; the variation of electrical resistance with temperature; and the influence of thermal radiation. 1. Gas thermometer: Hydrogen or helium is often used as the temperature-sensing medium because their liquefaction temperatures are very low, close to absolute zero, resulting in a wide measurement range. This type of thermometer offers high accuracy and is commonly used for precision measurements. 2. Resistance thermometer: Divided into metal resistance thermometers and semiconductor resistance thermometers, both are made based on the characteristic that electrical resistance changes with temperature. Metal thermometers mainly use pure metals such as platinum, gold, copper, and nickel, as well as rhodium-iron and phosphor bronze alloys; semiconductor thermometers mainly use carbon, germanium, etc. Resistance thermometers are convenient and reliable, and have been widely applied. 3. Thermocouple thermometer: A temperature-measuring instrument widely used in industry. It is made using the thermoelectric effect. Two different metal wires are welded together to form the measuring junction, while the other ends are connected to a measuring instrument to form a circuit. When the measuring junction is placed at the temperature to be measured, a difference in temperature between the measuring junction and the reference junction generates an electromotive force, causing current to flow through the loop. By measuring electrical quantities and knowing the temperature at one point, the temperature at another point can be determined. It is suitable for applications involving significant temperature differences between two substances and is often used for high-temperature and low-temperature measurements. 4. Dial thermometer: A thermometer shaped like a dial gauge, also known as a room thermometer, used to measure ambient temperature. It is made based on the principle of thermal expansion and contraction of metals. It uses a bimetallic strip as the temperature-sensing element to control the pointer. The bimetallic strip is usually made by riveting a copper strip and an iron strip together, with the copper strip on the left and the iron strip on the right. Since copper exhibits significantly greater thermal expansion and contraction than iron, when the temperature rises, the copper strip pulls the iron strip to bend to the right, causing the pointer to deflect to the right (indicating high temperature); conversely, when the temperature drops, the pointer deflects to the left under the drive of the bimetallic strip. 5. Glass tube thermometer: Glass tube thermometers measure temperature based on the principle of thermal expansion and contraction. Due to differences in the expansion coefficients, boiling points, and freezing points of the sensing media, common glass tube thermometers mainly include kerosene thermometers, mercury thermometers, and red ink thermometers. Their advantages are simple structure, ease of use, relatively high measurement accuracy, and low cost. The disadvantages are that the measurement range and accuracy are limited by the quality of the glass and the properties of the sensing medium. Additionally, they cannot transmit signals over long distances and are fragile. 6. Pressure thermometer: Pressure thermometers use the volume expansion or pressure change of liquid, gas, or saturated vapor in a sealed container upon heating as the measurement signal. Its basic structure consists of three parts: a temperature bulb, a capillary tube, and an indicator gauge. The advantages of pressure thermometers are: simple structure, high mechanical strength, and resistance to vibration. They are low-cost and do not require an external power source. The disadvantages are: limited temperature measurement range; significant heat loss and slow response time. 7. Mercury thermometer is a type of expansion thermometer and can only be used as a local monitoring instrument. Using it to measure temperature is not only simple and intuitive but also helps avoid errors associated with remote transmission thermometers.

103013497 Electrical Component Structure

For rubber and plastic power cable conductors used for power, lighting, and internal installation of electrical equipment, copper cores are preferred; for large cross-section conductors, compacted cores are advisable; conductors for fixed installation generally adopt Class 1 or Class 2 conductor structures. Insulation materials generally include four types: natural styrene-butadiene rubber, polyvinyl chloride (PVC), polyethylene, and nitrile-PVC compounds; heat-resistant power cables use PVC with a temperature resistance of 90°C. Sheath materials generally include five types: PVC, cold-resistant PVC, ant-termite PVC, black polyethylene, and neoprene rubber. Black polyethylene and neoprene sheathed power cables are suitable for special cold resistance and outdoor overhead laying. In environments with external forces, corrosion, humidity, etc., power cables with rubber or plastic sheaths can be used. Rubber and plastic flexible power cables use copper cores, with a flexible structure composed of stranded single wires; flexible conductors generally adopt Class 5 or Class 6 conductor structures. Insulation materials generally include natural styrene-butadiene rubber, PVC, or soft polyethylene plastic. The cabling lay ratio multiplier is small. The outer protective layer uses cotton yarn braiding to avoid overheating and damaging the insulation layer. To facilitate use and simplify the production process, a three-core balanced structure is adopted, which can save production man-hours and improve production efficiency. Shielded insulated power cable conductors are allowed to be tin-plated in certain occasions; the surface coverage density of the shielding layer should comply with standards or meet user requirements; the shielding layer should be braided or wrapped with tinned copper wire; if a sheath is extruded over the shield, the shield may use soft round copper wire braiding or wrapping. To prevent internal interference between cores or pairs, structures with individual phase shielding for each core (or pair) can be produced. General-purpose rubber-sheathed rubber power cable conductors use stranded soft copper wires, with a flexible structure; large cross-section surfaces are allowed to be paper-wrapped to improve bending performance. Insulation uses natural styrene-butadiene rubber, which has good aging performance. The rubber for outdoor products uses neoprene or a neoprene-dominated mixed rubber formula. Mining rubber power cable conductors use copper cores, with a flexible structure composed of stranded single wires: flexible conductors generally adopt Class 5 or Class 12 conductor structures. Insulation materials generally use rubber. The cabling lay ratio multiplier is small. Many products use metal braiding to uniform the electric field and improve the sensitivity display of the insulation condition. There is a thicker outer sheath, and color coding is performed underground in mines to allow construction personnel to understand the different voltage levels of the rubber power cables.

Weidou Intelligent Technology specializes in selling German 103013497 connectors, 103013497 switches, 103013497 relays, 103013497 controllers, 103013497 plugs, 103013497 sensors, 103013497 resistors, 103013497 capacitors, 103013497 buses, 103013497 modules, 103013497 cables, 103013497 power supplies, 103013497 interfaces, 103013497 gateways, 103013497 circuit breakers, 103013497 original imports from Germany. Welcome customers to inquire and order.