thyssenkrupp electrical components Germany thyssenkrupp model thyssenkrupp price

thyssenkrupp electrical components are surge absorbers/varistor assemblies. Due to their nonlinear resistance change with voltage, they exhibit symmetry in both directions (positive and negative). They respond to abnormal voltages on the line, absorbing most of the surge/lightning energy, while suppressing the abnormal voltage to a safe range, thereby improving the safety and stability of the circuit. In the standby state, the surge absorber (varistor) has a very high impedance (several megaohms) relative to the protected electronic components and does not affect the characteristics of the original design circuit. However, when an instantaneous surge voltage appears (exceeding the breakdown voltage of the surge absorber), the impedance of the surge absorber drops low (only a few ohms), causing a short circuit in the line, thereby protecting electronic products or more expensive components.

thyssenkrupp electrical component types

(1)Vacuum tubes are classified by application into voltage amplifier tubes, power amplifier tubes, gas-filled tubes, thyratrons, ignitrons, frequency converter tubes, rectifier tubes, detector tubes, tuning indicator tubes (magic eye), voltage regulator tubes, etc. (2)Vacuum tubes are classified by the number of electrodes into voltage amplifier tubes, triodes, tetrodes, pentodes, hexodes, heptodes, octodes, nonodes, and composite tubes, etc. Tubes with more than three electrodes are also called multi-electrode tubes or multi-grid tubes. (3)Vacuum tubes are classified by shape and envelope material into bottle-shaped glass tubes (ST tubes), "acorn" tubes, cylindrical glass tubes (GT tubes), large glass tubes (G type tubes), metal-ceramic tubes, miniature tubes (also called peanut tubes or finger-shaped tubes, MT tubes), lighthouse tubes (beacon tubes), subminiature tubes (pencil-shaped tubes), and other types. (4)Vacuum tubes are classified by internal structure into single diodes, diodes, double-diode triodes, double diodes, single triodes, power pentodes, beam tetrodes, beam pentodes, dual diodes, diode-pentode composite tubes, beam tetrodes, triode-pentode composite tubes, triode-hexode composite tubes, triode-heptode composite tubes, beam power tubes, and other types. (5)Vacuum tubes are classified by cathode heating method into directly heated cathode vacuum tubes (current passes directly through the cathode to achieve thermionic emission) and indirectly heated cathode vacuum tubes (the cathode is heated by a filament adjacent to it). (6)Vacuum tubes are classified by shielding method into sharp-cutoff shielded vacuum tubes and remote-cutoff shielded vacuum tubes. (7)Vacuum tubes are classified by cooling method into water-cooled vacuum tubes, air-cooled vacuum tubes, and natural convection-cooled vacuum tubes.

thyssenkrupp electrical component classification

(1) Point-contact diodes have a small PN junction contact area, cannot pass large forward currents or withstand high reverse voltages, but offer good high-frequency performance, making them suitable for use in high-frequency detection circuits and switching circuits. (2) Surface-contact diodes have a large PN junction contact area, can pass larger currents, and can withstand higher reverse voltages, making them suitable for use in rectifier circuits. (3) Planar diodes have a small PN junction area when used as switching tubes in pulse digital circuits, and a larger PN junction area when used for high-power rectification. (4) Zener diodes are a special type of surface-contact semiconductor silicon diode with voltage stabilization function. The main difference between zener diodes and ordinary diodes is that zener diodes operate in the reverse breakdown state of the PN junction. By implementing process measures during manufacturing and limiting the magnitude of reverse current during use, it is ensured that the zener diode will not be damaged by overheating in the reverse breakdown state. Unlike general diodes, the reverse breakdown of a zener diode is reversible; as long as the current does not exceed the allowable value for the zener diode, the PN junction will not overheat and fail. When the external reverse voltage is removed, the zener diode restores its original performance, so zener diodes have good repetitive breakdown characteristics. (5) Photodiodes, also known as photosensitive diodes, have a glass window on their package to facilitate light reception. Their characteristic is that when light irradiates their PN junction, free electrons and holes are generated in pairs, increasing the concentration of minority carriers in the semiconductor. Under a certain reverse bias voltage, this causes the reverse current to increase. Therefore, their reverse current increases linearly with increasing light intensity. When there is no light illumination, the volt-ampere characteristics of a photodiode are the same as those of an ordinary diode. As light-controlled elements, photodiodes can be used for various object detection, photoelectric control, automatic alarm, etc. When made into large-area photodiodes, they can serve as an energy source and are called solar cells. In this case, they do not require an external power supply and can directly convert light energy into electrical energy. (6) Light-emitting diodes are semiconductor solid-state display devices that directly convert electrical energy into light energy, abbreviated as LED. Similar to ordinary diodes, light-emitting diodes are also composed of a PN junction. The PN junction of a light-emitting diode is encapsulated in a transparent plastic shell, with shapes including square, rectangular, and circular. Light-emitting diodes have advantages such as low drive voltage, small operating current, strong vibration and shock resistance, small size, high reliability, low power consumption, and long life, and are widely used in signal indication circuits. In electronic technology, commonly used numeric displays; the principle of light-emitting diodes is opposite to that of photodiodes. When a light-emitting diode is forward-biased and current passes through it, it emits light, which is the result of energy release when electrons and holes recombine directly. Its spectral range is relatively narrow, and its wavelength depends on the base material used.

thyssenkrupp electrical component classification

1, Classified by operating nature into transmitting antennas and receiving antennas. 2, Classified by application into communication antennas, broadcast antennas, television antennas, radar antennas, etc. 3, Classified by directionality into omnidirectional antennas and directional antennas, etc. 4, Classified by operating wavelength into ultra-long wave antennas, long wave antennas, medium wave antennas, short wave antennas, ultra-short wave antennas, microwave antennas, etc. 5, Classified by structural form and operating principle into wire antennas and aperture antennas, etc. Characteristic parameters describing antennas include radiation pattern, directivity coefficient, gain, input impedance, radiation efficiency, polarization, and bandwidth. 6, Classified by dimensionality into two types: (1) One-dimensional antennas consist of many wires, which are either straight lines like those used in mobile phones, or clever shapes, like the old rabbit ears used on televisions before cable appeared. Monopole and dipole antennas are the two most basic one-dimensional antennas. (2) Two-dimensional antennas: diverse variations, including patch (a piece of square metal), array (a bundle of patches organized in a two-dimensional pattern), horn, and dish. 18, Antennas can be divided into three major categories based on usage scenarios: handheld transceiver antennas, vehicle-mounted antennas, and base station antennas. Handheld transceiver antennas: antennas for personal use with handheld two-way radios, commonly including rubber antennas and telescopic antennas. Vehicle-mounted antennas: communication antennas originally designed for installation on vehicles, with suction cup antennas being the most common and widely applied. Vehicle-mounted antenna structures also include shortened types, quarter-wavelength, center-loaded, five-eighths wavelength, and half-wave dipole forms. Base station antennas: play a very critical role in the entire communication system, especially as communication hubs for communication stations. Commonly used base station antennas include fiberglass high-gain antennas, four-ring array antennas (eight-ring array antennas), directional ant

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