wisi electrical components Germany wisi model wisi price

wisi electrical components are electronic devices made from semiconductor materials (silicon, selenium, germanium, etc.). A diode has two electrodes: the positive electrode, also called the anode; and the negative electrode, also called the cathode. When a forward voltage is applied across the two terminals of the diode, the diode conducts; when a reverse voltage is applied, the diode cuts off. The conduction and cutoff of the diode are equivalent to the closing and opening of a switch. The diode has unidirectional conductivity; when conducting, the current flows from the anode through the tube to the cathode. The diode is one of the earliest semiconductor devices, and its applications are very extensive. Especially in various electronic circuits, by reasonably connecting diodes with resistors, capacitors, inductors, and other components to form circuits with different functions, it is possible to achieve rectification of AC, demodulation of modulated signals, limiting and clamping, as well as voltage stabilization of power supply voltage, among other functions.

wisi electrical component structure

The structure of a power cord is not very complex, but it cannot be simply understood at a glance. If you study the power cord carefully, some aspects require professional knowledge to understand its structure. The structure of a power cord mainly consists of an outer sheath, an inner sheath, and conductors. Common transmission conductors include metal wires made of copper, aluminum, etc. (1) The outer sheath, also known as the protective sheath, is the outermost layer of the power cord. This outer sheath serves to protect the power cord and possesses strong characteristics such as high temperature resistance, low temperature resistance, resistance to natural light interference, good flexibility, long service life, and environmentally friendly materials. (2) The inner sheath, also known as the insulating sheath, is an indispensable intermediate structural part of the power cord. As the name suggests, the main function of the insulating sheath is insulation, ensuring the electrical safety of the power cord by preventing any leakage between the copper wires and the air. The material of the insulating sheath must be soft to ensure it fits well within the intermediate layer. (3) Copper wire is the core part of the power cord, serving as the carrier for current and voltage. The density of the copper wire directly affects the quality of the power cord. The material of the power cord is also an important factor in quality control; the quantity and flexibility of the copper wire are also considerations. (4) The inner sheath is a layer of material wrapped between the shielding layer and the wire core, typically made of polyvinyl chloride (PVC) or polyethylene (PE) plastic. Low-smoke zero-halogen materials are also used. Used in accordance with process regulations, it prevents the insulation layer from coming into contact with water, air, or other objects, thereby avoiding moisture absorption and mechanical damage to the insulation layer.

wisi electrical component principle

A potentiometric displacement sensor converts mechanical displacement into a resistance or voltage output that has a linear or arbitrary functional relationship with the displacement via a potentiometer element. Ordinary linear potentiometers and circular potentiometers can be used as linear displacement and angular displacement sensors, respectively. However, potentiometers designed for measuring displacement require a definite relationship between displacement change and resistance change. The movable wiper of the potentiometric displacement sensor is connected to the object being measured. The displacement of the object causes a change in resistance at the moving end of the potentiometer. The magnitude of the resistance change reflects the magnitude of the displacement, while an increase or decrease in resistance indicates the direction of displacement. Typically, a power supply voltage is applied to the potentiometer to convert the resistance change into a voltage output. In wire-wound potentiometers, the resistance changes in steps based on the turn-to-turn resistance as the wiper moves, resulting in a stepped output characteristic. If such a displacement sensor is used as a displacement feedback element in a servo system, excessive step voltages can cause system oscillation. Therefore, the resistance per turn should be minimized during the manufacture of the potentiometer. Another major disadvantage of potentiometric sensors is their susceptibility to wear. Their advantages include simple structure, large output signal, ease of use, and low cost.

wisi electrical component classification

Self-inductance occurs when a current passing through a coil generates a magnetic field around it. When the current in the coil changes, the surrounding magnetic field changes accordingly, inducing an electromotive force (EMF) in the coil itself (induced EMF). EMF represents the terminal voltage of an ideal power source in an active component; this phenomenon is called self-inductance. An electronic component made by winding wire with a specific number of turns, capable of producing a certain amount of self-inductance or mutual inductance, is commonly referred to as an inductor coil. To increase inductance, improve the quality factor, and reduce volume, a core made of ferromagnetic material, such as an iron core or magnetic core, is often added. Basic parameters of an inductor include inductance, quality factor, inherent capacitance, stability, rated current, and operating frequency. An inductor composed of a single coil is called a self-inductor, and its self-inductance is also known as the self-inductance coefficient. Mutual inductance occurs when two inductor coils are placed close to each other; a change in the magnetic field of one coil affects the other. This effect is called mutual inductance. The magnitude of mutual inductance depends on the self-inductance of the coils and the degree of coupling between them. Components manufactured using this principle are called mutual inductors.

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