EFENSLOVAKIA electrical components Germany EFENSLOVAKIA model EFENSLOVAKIA price

EFENSLOVAKIA electrical components are pyroelectric infrared sensors, devices constructed from thermocouples. They are widely used as temperature detection devices in fields such as ear thermometers, radiation thermometers, electric ovens, and food temperature testing. The entry details the basic unit of a thermopile—the thermocouple; and thoroughly introduces the structure, working principle, main parameters, and applications of thermopiles.

EFENSLOVAKIA electrical component parameters

The main parameters of potentiometers include nominal resistance, rated power, resolution, sliding noise, resistance variation characteristic, wear resistance, zero-position resistance, and temperature coefficient. 1. Rated power: The maximum power allowed to be dissipated across the two fixed terminals of a potentiometer is its rated power. Note that the rated power is not equal to the power between the center tap and a fixed terminal. The rated power of a potentiometer refers to the maximum power allowed to be consumed under long-term continuous load at the specified rated temperature, when the atmospheric pressure is 87~107kPa. 2. Nominal resistance: The nominal resistance marked on the product, with series similar to those of resistors. 3. Tolerance class: The error range between the measured resistance and the nominal resistance allows for errors of 20%, 10%, 5%, 2%, 1% depending on the precision class. The precision of precision potentiometers can reach 0.1%. 11. Resistance variation law: Refers to the relationship between resistance change and the rotation angle (or sliding travel) of the wiper contact. This relationship can take any functional form; common types include linear, logarithmic, and reverse logarithmic (exponential). In use, linear potentiometers are suitable as voltage dividers; reverse logarithmic (exponential) potentiometers are suitable as volume controls in radios, tape recorders, phonographs, and televisions. If a replacement of the same type is unavailable during maintenance, a linear type may be used as a substitute, but a logarithmic type is not recommended. Logarithmic potentiometers are only suitable for tone control, etc.

EFENSLOVAKIA electrical component principles

An AC power supply that provides stable voltage and frequency is called an AC stabilized power supply. Most domestic manufacturers focus on AC voltage stabilization. Below is a brief description of the classification characteristics of AC voltage stabilizers available on the market. Parameter adjustment (resonance) type: The basic principle of this type of voltage stabilizer is LC series resonance. Early magnetic saturation stabilizers belong to this category. Its advantages are: simple structure, few components, high reliability, wide stabilization range, strong anti-interference and overload capacity. Disadvantages are: high energy consumption, high noise, heavy weight, and high cost.

EFENSLOVAKIA electrical component features

LED lamps are light-emitting diodes (LEDs), using solid-state semiconductor chips as the light-emitting material. Compared with traditional lamps, LED lamps are energy-saving, environmentally friendly, and offer good color rendering and response speed. (1) Energy saving: The most prominent feature of LED lamps is their low energy consumption; the energy consumption of LED lamps is one-tenth that of incandescent lamps and one-quarter that of energy-saving lamps. This is a major advantage of LED lamps. As people increasingly value energy conservation and environmental protection, this energy-saving feature has led to the widespread application and popularity of LED lamps. (2) High-speed switching capability: LED lamps can operate in high-speed switching states. When walking on the street, one observes that screens or displays composed of LED elements show constantly changing images. This indicates that LED lamps can perform high-speed switching. In contrast, ordinary incandescent lamps cannot operate in this manner; excessive switching directly causes the filament to break. This is another important reason for the popularity of LED lamps. (3) Environmental friendliness: LED lamps do not contain heavy metals such as mercury, whereas fluorescent lamps do. This highlights the environmental friendliness of LED lamps. Given the current emphasis on environmental protection, more people are willing to choose eco-friendly LED lamps. (4) Fast response speed: Another prominent feature of LED lamps is their fast response. Upon power connection, LED lamps light up immediately. Compared to conventional energy-saving lamps, which often require a long time to illuminate a room fully after heating up, LED lamps respond much faster. (5) Cleaner light source: Compared to other light sources, LED lamps are "cleaner." This "cleanliness" does not refer to the physical cleanliness of the lamp surface or interior, but rather that the lamp is a cold light source. It generates little heat and does not attract insects that are drawn to light and heat. Especially in summer, there are many insects in rural areas. Some insects are naturally attracted to heat; incandescent and energy-saving lamps generate heat after prolonged use, which attracts these insects. This brings pollutants to the lamp surface, and insect excrement can dirty indoor environments. However, as LED lamps are cold light sources, they do not attract insects, thereby preventing insect excrement. Thus, LED lamps are "cleaner." Semiconductor light-emitting diodes have a wide range of applications, low power consumption, long service life, and are low-carbon and environmentally friendly. In China, semiconductor light-emitting diodes are widely used; many lighting fixtures in residential homes use them, and most streetlights use semiconductor LED streetlights as the illumination source. Some road lighting fixtures also integrate solar technology, saving significant amounts of electrical energy. Photodiodes can be classified by material into aluminum gallium arsenide photodiodes, aluminum phosphide arsenide photodiodes, gallium phosphide photodiodes, and aluminum arsenide photodiodes, among others.

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