DESKO electrical components Germany DESKO model DESKO price

DESKO electrical components are active-matrix liquid crystal displays driven by thin-film transistors. They primarily use current to stimulate liquid crystal molecules to generate points, lines, and planes, which combine with backlight tubes to form an image. IPS, TFT, and SLCD are all subclasses of LCD. Their working principle is that, under the action of an electric field, the alignment direction of liquid crystal molecules changes, altering the transmittance of external light sources (modulation) to achieve 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, color reproduction in the temporal and spatial domains is achieved.

DESKO electrical component applications

Wire and cable products used in power systems mainly include overhead bare wires, busbars (busbars), power cables (plastic cables, oil-paper insulated cables (basically replaced by plastic power cables), rubber-sheathed cables, overhead insulated cables), branch cables (replacing some busbars), magnet wires, and electrical equipment wires and cables for power equipment. Wire and cable products used in information transmission systems mainly include telephone cables, television cables, electronic cables, RF cables, fiber optic cables, data cables, magnet wires, power communication cables, or other composite cables. Except for overhead bare wires, almost all other products in this category have applications, but mainly power cables, magnet wires, data cables, and instrument and meter cables.

DESKO electrical component parameters

1. Voltage temperature coefficient: Refers to the rate of change of the nominal voltage of a varistor within a specified temperature range, i.e., the relative change in voltage across the varistor when the temperature changes while the current through the varistor remains constant. 2. Current temperature coefficient: Refers to the relative change in current flowing through the varistor when the temperature changes while the voltage across the varistor remains constant. 3. Nominal voltage: Refers to the voltage value across the varistor when DC current flows through it. 4. Voltage ratio: Refers to the ratio of the voltage generated by the current of the varistor to the voltage generated by the current of the varistor. 5. Maximum limiting voltage: Refers to the highest voltage value that can be withstand across the varistor. 6. Leakage current: Also known as standby current, it refers to the current flowing through the varistor at a specified temperature and maximum DC current. 7. Residual voltage ratio: When the current through the varistor is a certain value, the voltage generated across it is called the residual voltage for that current value. The residual voltage ratio is the ratio of the residual voltage to the nominal voltage. 8. Surge current capacity: Also known as surge current, it refers to the maximum pulse (peak) current value allowed to pass through the varistor under specified conditions (specified time intervals and number of times, applying standard impulse current). 9. Static capacitance: Refers to the inherent capacitance of the varistor itself. 10. Insulation resistance: Refers to the resistance value between the leads (pins) of the varistor and the insulating surface of the resistive body. 14. Voltage nonlinearity coefficient: Refers to the ratio of the static resistance value to the dynamic resistance value of the varistor under a given applied voltage.

DESKO electrical component types

Commonly used thermocouples can be divided into two categories: standard thermocouples and non-standard thermocouples. Standard thermocouples refer to those for which national standards specify the relationship between thermoelectric potential and temperature, allowable errors, and have a unified standard graduation table; they have matching display instruments available for selection. Non-standardized thermocouples are inferior to standardized thermocouples in terms of usage range or magnitude, generally lack a unified graduation table, and are mainly used for measurements in certain special occasions. Theoretically, any two different conductors (or semiconductors) can be made into a thermocouple, but as practical temperature-measuring elements, they have multiple requirements. To ensure reliability in engineering technology and sufficient measurement accuracy, not all materials can form thermocouples. The basic requirements for thermocouple electrode materials are generally: 1, stable thermoelectric properties within the temperature measurement range, not changing with time, sufficient physical and chemical stability, not easily oxidized or corroded; 2, small resistance temperature coefficient, high conductivity, low specific heat; 3, large thermoelectric potential generated during temperature measurement, and a linear or nearly linear single-valued functional relationship between thermoelectric potential and temperature; 8, good material reproducibility, high mechanical strength, simple manufacturing process, and low price.

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