HAUPA electrical components Germany HAUPA model HAUPA price

HAUPA electrical components are a new type of contactless switching device composed entirely of solid-state electronic components. It utilizes the switching characteristics of electronic components (such as switching transistors, triacs, and other semiconductor devices) to achieve contactless, spark-free connection and disconnection of circuits, hence it is also known as a "contactless switch." A solid-state relay is a four-terminal active device, where two terminals are input control terminals and the other two are output controlled terminals. It has both amplification drive and isolation functions, making it very suitable for driving high-power switching actuators. Compared to electromagnetic relays, it offers higher reliability, is contactless, has a long service life, fast speed, and low external interference, and has been widely applied [1].

HAUPA electrical component classification

Based on the working power supply of the motor, it can be divided into DC motors and AC motors. Among them, AC motors are further divided into single-phase motors and three-phase motors. Motors can be classified into DC motors, asynchronous motors, and synchronous motors based on structure and working principle. Synchronous motors can be further divided into permanent magnet synchronous motors, reluctance synchronous motors, and hysteresis synchronous motors. Asynchronous motors can be divided into induction motors and AC commutator motors. Induction motors are further divided into three-phase asynchronous motors, etc., phase asynchronous motors, and shaded-pole asynchronous motors. AC commutator motors are further divided into single-phase series-wound motors, AC/DC universal motors, and repulsion motors. Motors can be classified into capacitor-start single-phase asynchronous motors, capacitor-run single-phase asynchronous motors, capacitor-start-run single-phase asynchronous motors, and split-phase single-phase asynchronous motors based on starting and running methods. Motors can be classified into drive motors and control motors based on application. Drive motors are further divided into motors for power tools, motors for home appliances, and motors for other general small mechanical equipment. Control motors are further divided into stepper motors and servo motors, etc. Motors can be classified into squirrel-cage induction motors and wound-rotor induction motors based on rotor structure. Motors can be classified into high-speed motors, low-speed motors, constant-speed motors, and variable-speed motors based on operating speed.

HAUPA electrical component applications

Metal waveguides and metal resonant cavities are widely used in the decimeter, centimeter, and longer millimeter wave bands. Since the cross-section of the waveguide and the dimensions of the resonant cavity are close to the wavelength, the dimensions of metal waveguides and resonant cavities are too small and difficult to manufacture. It is even more impossible to apply metal waveguides or resonant cavities in the infrared or visible light bands, i.e., when the wavelength is on the order of micrometers. For this reason, dielectric waveguides and dielectric resonators have rapidly developed and gained widespread application. Although the dimensions of dielectric waveguides and dielectric resonators are also on the order comparable to the wavelength, they are easy to fabricate into tiny sizes using microfabrication techniques. For example, optical fibers and optical waveguides with cross-sectional dimensions on the order of micrometers belong to dielectric waveguides. The field in a metal waveguide can be regarded as caused by the reciprocating reflection of plane waves between conductor surfaces, and the field in a dielectric waveguide can also be regarded as caused by the total reflection of electromagnetic waves between dielectric interfaces. Therefore, a dense medium surrounded by a sparse medium forms a dielectric waveguide. In an ideal metal waveguide, the electromagnetic field forms a standing wave transversely, and outside the waveguide boundary, it approximates an ideal conductor with no electromagnetic field. In a dielectric waveguide, the electromagnetic field forms a standing wave transversely, but an electromagnetic field still exists outside the dielectric waveguide, which decreases exponentially transversely, known as the evanescent field. In a metal waveguide filled with a uniform medium, the TE mode and TM mode can separately satisfy the short-circuit boundary conditions of the waveguide walls, so the TE mode and TM mode can always be separated, and both can propagate in the metal waveguide. When a metal waveguide is filled with more than two media, or partially filled with dielectric, the electromagnetic field must satisfy not only the boundary conditions on the conductor walls but also the continuity conditions at the media interfaces. In the case of uniform filling with more than two media, only the mixed mode of TE and TM, the HEM mode, can exist. After understanding the above content, one can further learn about dielectric resonators. As early as 1939, the concept and theory of dielectric resonators were proposed, but due to the lack of suitable dielectric materials, this theory remained dormant for more than 20 years without practical development. By the 20th century, in the 60s, the successful development of high-dielectric-constant ceramics such as rutile ceramic (ε≈80100) brought dielectric resonators back into attention. However, the high temperature coefficient of rutile ceramic limited its practical application. In the 20th century, in the 70s, barium titanate-based and zirconium titanate-based ceramics were developed. Their high dielectric constant, low loss, and low temperature coefficient made dielectric resonators practical. Dielectric resonators have advantages such as small size, light weight, high quality factor, and good stability. They are particularly suitable for application in microstrip circuits or microwave integrated circuits and in the millimeter wave band, receiving significant attention and developing rapidly. When the dielectric constant is very high, the interface between the dielectric and air approximates an open circuit surface, and the reflection coefficient of electromagnetic waves at the interface is close to 7. At this point, the surface of the dielectric resonator can be regarded as an open circuit wall, i.e., a magnetic wall. Thus, the dielectric resonator becomes a closed system with homogeneous boundary conditions, i.e., an equivalent open circuit wall (magnetic wall) resonant cavity.

HAUPA electrical component classification

Classification by material: a, wire-wound resistors are made by winding resistance wire around an insulating skeleton, coated with a heat-resistant glaze insulation layer or insulating paint. Wire-wound resistors have a low temperature coefficient, high resistance accuracy, good stability, heat and corrosion resistance, and are mainly used as precision high-power resistors. The disadvantage is poor high-frequency performance and a large time constant. b, carbon composition resistors are made by pressing carbon and synthetic plastic. c, carbon film resistors are made by depositing a layer of carbon on a ceramic tube, forming crystalline carbon on a ceramic rod skeleton. Carbon film resistors have low cost, stable performance, wide resistance range, low temperature and voltage coefficients, and are currently the most widely used resistors. d, metal film resistors are made by depositing a layer of metal on a ceramic tube, using vacuum evaporation to deposit alloy material on the surface of a ceramic rod skeleton. Metal film resistors have higher accuracy, better stability, lower noise, and smaller temperature coefficient than carbon film resistors. They are widely used in instruments and communication equipment. e, metal oxide film resistors are made by depositing a layer of tin oxide on a ceramic tube, depositing a layer of metal oxide on an insulating rod. Since they are oxides themselves, they are stable at high temperatures, resistant to thermal shock, and have strong load capacity. Classified by application, there are general-purpose, precision, high-frequency, high-voltage, high-resistance, high-power, and resistor networks.

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