LINDY Electronics electrical components Germany LINDY Electronics model LINDY Electronics price

LINDY Electronics electrical components: A capacitor consists of two conductors in close proximity, separated by a non-conductive insulating dielectric. When a voltage is applied across the two plates of the capacitor, it stores charge. The capacitance value is numerically equal to the ratio of the charge on one conductive plate to the voltage between the two plates. The basic unit of capacitance is the Farad (F). In circuit diagrams, the letter C is typically used to represent capacitive elements; a capacitor is a component that stores electric charge and electrical energy (electric potential energy). A system of conductors where one conductor is surrounded by another, or where all electric field lines originating from one conductor terminate on another conductor, is called a capacitor.

LINDY Electronics electrical component features

Among various types of switches, there is a component with the ability to "sense" objects approaching it—the displacement sensor. Utilizing the sensitivity of the displacement sensor to approaching objects achieves the purpose of controlling the switch to open or close; this is a proximity switch. Only when an object moves toward the proximity switch and approaches within a certain distance does the displacement sensor "sense" it, causing the switch to actuate. This distance is usually referred to as the "detection distance." Different proximity switches have different detection distances. Sometimes, detected objects move toward the proximity switch one after another at certain time intervals, and then leave one by one, repeating continuously. Different proximity switches have different response capabilities to the detection object. This response characteristic is called the "response frequency."

LINDY Electronics electrical component features

The characteristics of self-restoring fuses include high breaking current capacity, capable of interrupting AC currents, and even larger currents. This type of fuse has a very significant current-limiting effect; when the instantaneous current reaches close to 167 kA, it can be rapidly limited. The structure of a self-restoring fuse mainly consists of current terminals (also called electrodes), mica glass (filler), insulating tube, fusible element, piston, argon gas, and housing. Among these, the housing of the self-restoring fuse is generally made of stainless steel. The stainless steel sleeve is separated from the internal beryllium oxide ceramic insulating tube by mica glass, which serves as both filler and insulator. Self-restoring fuses operate based on the characteristic of sodium metal, whose resistance increases sharply at high temperatures. Under normal operating conditions, current flows from the left current terminal, through the sodium metal fusible element within the fine pores of the beryllium oxide ceramic insulating tube, to the right current terminal, forming a current path. When a short-circuit fault occurs, the short-circuit current heats the sodium metal, vaporizing it into a high-temperature, high-pressure plasma state, which sharply increases its resistance, thereby achieving current limiting. At this point, the high pressure generated by the vaporized fusible element pushes the piston to the right, compressing the argon gas. After the circuit breaker interrupts the short-circuit current limited by the self-restoring fuse, the temperature of the sodium vapor drops, and the pressure decreases accordingly. The previously compressed argon gas condenses back into liquid and solid states, and its resistance value decreases to the original value, making it ready for reuse. Regarding the wiring of self-restoring fuses, they are often used in series with circuit breakers. An additional resistor is first connected in parallel with the fuse itself to suppress overvoltage occurring during interruption. During normal operation, the self-restoring fuse is in a low-resistance state, and only a small current flows through the parallel resistor. When a line fault occurs, the self-restoring fuse enters a high-resistance state; the parallel resistor can absorb the resulting overvoltage and maintain the operating current required for the circuit breaker trip unit, ensuring reliable interruption by the circuit breaker. Therefore, the current interrupted by the circuit breaker is actually the current-limited value of the self-restoring fuse.

LINDY Electronics electrical component classification

Classification by material: a, wire-wound resistors are made by winding resistance wire. They are manufactured by winding high-resistance alloy wire around an insulating core, coated with a heat-resistant glaze insulation layer or insulating varnish. Wire-wound resistors have a low temperature coefficient, high resistance accuracy, good stability, heat and corrosion resistance, and are mainly used as precision high-power resistors. The disadvantages are poor high-frequency performance and a large time constant. b, carbon composition resistors are made by pressing carbon and synthetic plastic together. c, carbon film resistors are made by coating a layer of carbon on a ceramic tube, depositing crystalline carbon on a ceramic rod core. Carbon film resistors are low-cost, stable in performance, have a wide resistance range, and low temperature and voltage coefficients, making them the most widely used resistors at present. d, metal film resistors are made by coating a layer of metal on a ceramic tube, evaporating alloy materials onto the surface of the ceramic rod core using vacuum evaporation. Metal film resistors have higher accuracy, better stability, lower noise, and smaller temperature coefficients than carbon film resistors. They are widely used in instruments and communication equipment. e, metal oxide film resistors are made by coating a layer of tin oxide on a ceramic tube, depositing a layer of metal oxide on an insulating rod. As they are oxides themselves, they are stable at high temperatures, resistant to thermal shock, and have strong load capacity. Classified by application, there are general-purpose, precision, high-frequency, high-voltage, high-resistance, high-power, and resistor networks.

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