FATEK electrical components Germany FATEK model FATEK price

FATEK fuel cells are electrochemical devices that directly convert the chemical energy of fuel into electrical energy, also known as electrochemical generators. They represent the fourth power generation technology, following hydroelectric, thermal, and nuclear power. Since fuel cells convert part of the Gibbs free energy from the chemical energy of fuel into electricity through electrochemical reactions, they are not limited by the Carnot cycle effect, resulting in high efficiency. Additionally, fuel cells use fuel and oxygen as raw materials and have no mechanical transmission parts, leading to minimal harmful gas emissions and a long service life. Thus, from the perspective of energy conservation and ecological protection, fuel cells are considered the most promising power generation technology. These are power generation devices that directly convert the chemical energy of fuel and oxidant into electricity via electrochemical reactions. Theoretically, fuel cells can operate at a thermal efficiency close to 100%, offering high economic viability. Currently, due to various technical limitations and considering the energy consumption of the entire system, the overall conversion efficiency of practical fuel cells mostly ranges from 45% to 60%. If waste heat utilization is considered, efficiency can exceed 80%. Furthermore, fuel cell units contain few or no moving parts, ensuring reliable operation, low maintenance requirements, and quieter performance compared to traditional generator sets. Moreover, the electrochemical reaction is clean and complete, producing very few harmful substances. All these factors make fuel cells a highly promising energy power device. A fuel cell is an electrochemical power generation device that isothermally converts chemical energy directly into electrical energy via electrochemical methods, without undergoing a heat engine process. It is not limited by the Carnot cycle, resulting in high energy conversion efficiency and zero pollution, making it an ideal energy utilization method. Meanwhile, with the continuous maturation of fuel cell technology and the abundant natural gas supply provided by the West-to-East Gas Transmission Project, the commercial application of fuel cells holds broad development prospects.

FATEK electrical component principle

Photoelectric sensors generally consist of 2 parts: processing channels and processing elements. Their basic principle is based on the photoelectric effect, converting changes in the measured quantity into changes in optical signals, and then further converting non-electrical signals into electrical signals with the help of photoelectric elements. The photoelectric effect refers to the phenomenon where light irradiating an object can be viewed as a series of photons with certain energy bombarding the object; at this time, the photon energy is transferred to electrons, and the entire energy of one photon is absorbed by one electron at once. After gaining the energy transferred by the photon, the state of the electron changes, thereby causing corresponding electrical effects in the illuminated object. The photoelectric effect is usually divided into 13 categories: ① The phenomenon where electrons overflow from the object surface under light action is called the external photoelectric effect, such as in phototubes and photomultiplier tubes; ② The phenomenon where the resistivity of an object changes under light action is called the internal photoelectric effect, such as in photoresistors and phototransistors; ③ The phenomenon where an object generates an electromotive force in a certain direction under light action is called the photovoltaic effect, such as in photocells. Photoelectric detection methods have advantages such as high precision, fast response, and non-contact operation, and can measure many parameters. With simple sensor structures and flexible forms, photoelectric sensors are widely used in detection and control. Photoelectric sensors are key elements for realizing photoelectric conversion in various photoelectric detection systems; they are devices that convert optical signals (visible and ultraviolet laser light) into electrical signals. Photoelectric sensors use photoelectric devices as conversion elements. They can be used to detect non-electrical physical quantities that directly cause changes in light intensity, such as light intensity, illuminance, radiation temperature measurement, and gas composition analysis; they can also be used to detect other non-electrical quantities that can be converted into changes in light intensity, such as part diameter, surface roughness, strain, displacement, vibration, speed, acceleration, as well as object shape and working status recognition. Photoelectric sensors have characteristics such as non-contact operation, fast response, and reliable performance, so they are widely used in industrial automation devices and robots. The emergence of new photoelectric devices, especially the birth of CCD image sensors, has opened a new chapter for the further application of photoelectric sensors.

FATEK electrical component classification

Microphones can be divided into dynamic microphones and condenser microphones based on their transduction principles. Among them, dynamic types can be further subdivided into moving-coil microphones and ribbon microphones. Common commercial microphone types include condenser microphones, crystal microphones, carbon microphones, and dynamic microphones. Commonly used condenser microphones use two types of energy sources: DC bias power supply and electret film. Both these types of condenser microphones and crystal microphones convert sound energy into electrical energy, generating a changing electric field. Carbon microphones use a DC voltage source, changing their resistance through sound vibration, thereby converting sound signals into electrical signals. Condenser, crystal, and carbon microphones all generate a voltage signal proportional to the displacement of the sensitive diaphragm, while dynamic microphones generate a voltage signal proportional to the vibration velocity of the sensitive diaphragm. Dynamic microphones use permanent magnets as an energy source, converting sound energy into electrical energy based on the inductive effect.

FATEK electrical component characteristics

① Wide transient response range and strong harmonic measurement capability. The quality of transient characteristics is an important parameter for judging whether a transformer can be applied in power systems, especially in coordination with relay protection action times. Traditional electromagnetic transformers have poor response characteristics to high-frequency signals due to the presence of iron cores and cannot correctly reflect the transient process on the primary side. However, the frequency range of photoelectric transformers is mainly determined by the electronic circuit part, without the problem of iron core saturation, so they can accurately reflect the transient process on the primary side. The structure of photoelectric sensors allows for the measurement of harmonics on high-voltage power lines, which is difficult for electromagnetic induction transformers to achieve. ② Digital interface and strong communication capability. Since photoelectric sensors transmit optical digital signals, they are easy to interface with communication networks, and there is no measurement error during transmission. Meanwhile, with the widespread adoption of microcomputer-based protection and control equipment, photoelectric transformers can directly provide digital quantities to secondary equipment, thereby eliminating the need for converters and A/D sampling parts in the original protection devices, greatly simplifying secondary equipment and promoting research on new protection principles. ③ Small size, light weight, and easy upgradability, meeting the requirements for miniaturization and compactness of substations. Since photoelectric sensors rely on sensor heads and electronic circuits for signal acquisition and processing, they are small in size, with weights generally below 1008 kg, making them easy to integrate into AIS or GIS, thereby greatly reducing the land area occupied by substations and meeting the requirements for substation miniaturization and compactness. At the same time, photoelectric transformers connect to secondary equipment via a small number of optical fibers, significantly reducing cable trenches and cables.

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