KIRA electrical components Germany KIRA model KIRA price

KIRA electrical component is an active-matrix liquid crystal display driven by thin-film transistors. It primarily uses current to stimulate liquid crystal molecules to generate points, lines, and planes, which combine with backlights to form images. IPS, TFT, and SLCD are all subclasses of LCD. Its working principle is that, under the action of an electric field, the alignment direction of liquid crystal molecules changes, altering the transmittance (modulation) of external light sources to complete electro-optical conversion. Then, using different excitations of the R, G, and B primary color signals through red, green, and blue primary color filter films, it completes the color reproduction in the time domain and spatial domain.

KIRA electrical component principle

In addition to the function of photodiodes to convert optical signals into electrical signals, phototransistors also have the function of amplifying electrical signals. The appearance of a phototransistor is not much different from that of a general transistor. Generally, a phototransistor only leads out two terminals—the emitter and the collector—while the base is not led out. The casing also has a window to allow light to enter. To increase illumination, the base region area is made large, while the emitter region is small, so that incident light is mainly absorbed by the base region. During operation, the collector junction is reverse-biased, and the emitter junction is forward-biased. In the absence of light, the current flowing through the tube is the dark current Iceo = (1 + β) Icbo (very small), which is smaller than the penetration current of general transistors; when there is light, a large number of electron-hole pairs are excited, causing the current generated at the base Ib to increase. At this moment, the current flowing through the tube is called photocurrent, and the emitter current Ie = (6 + β) Ib. It can be seen that phototransistors have higher sensitivity than photodiodes.

KIRA electrical component structure

The structure of a power cord is not overly complex, but it cannot be fully understood by superficial observation. A thorough study reveals that certain aspects require professional knowledge to comprehend the structure of the power cord. 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, and other materials. 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 robust 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 essential intermediate structural component of the power cord. As the name suggests, the primary function of the insulating sheath is insulation, ensuring electrical safety 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 component 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 a critical factor in quality control, with the quantity and flexibility of the copper wires being additional 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 specifications, 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.

KIRA electrical component features

1, the function of a varactor diode is based on the principle that the capacitance between the PN junction is variable. It is used as a variable capacitor in high-frequency tuning, communication, and other circuits. Varactor diodes belong to reverse-biased diodes. Changing the reverse bias on its PN junction changes the capacitance of the PN junction. The higher the reverse bias, the lower the junction capacitance. The relationship between reverse bias and junction capacitance is nonlinear. 4, diagram of the relationship between the capacitance value of the varactor diode and the reverse bias value: (a) Increased reverse bias causes decreased capacitance; (b) Decreased reverse bias causes increased capacitance. The capacitance tolerance range is a specified capacitance range for the varactor diode. The datasheet will display the minimum, nominal, and maximum values, which are often plotted on the graph.

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