ELEKTROKOMPONEN electrical components Germany ELEKTROKOMPONEN model ELEKTROKOMPONEN price

ELEKTROKOMPONEN electrical components are specifically designed to suppress high-frequency noise and spike interference on signal lines and power lines, and also have the ability to absorb electrostatic pulses. Ferrite beads are used to absorb ultra-high-frequency signals. For example, some RF circuits, PLL, oscillator circuits, and circuits containing ultra-high-frequency memory (DDR SDRAM, RAMBUS, etc.) all require ferrite beads at the power input. Inductors are energy storage components used in LC oscillator circuits, mid-to-low frequency filter circuits, etc., and their application frequency range rarely exceeds 50MHZ. Ferrite beads have high resistivity and permeability, equivalent to a resistor and inductor in series, but both resistance and inductance vary with frequency.

ELEKTROKOMPONEN electrical component types

Common 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 reference table; matching display instruments are available for selection. Non-standard thermocouples are inferior to standard thermocouples in terms of usage range or magnitude, generally lack a unified reference table, and are mainly used for measurements in certain special occasions. Theoretically, any two different conductors (or semiconductors) can be configured as a thermocouple, but as practical temperature-sensing elements, they are subject to 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 over time, sufficient physical and chemical stability, and resistance to oxidation or corrosion; 2, small temperature coefficient of resistance, high conductivity, and low specific heat; 3, large thermoelectric potential generated during temperature measurement, with a linear or near-linear single-valued functional relationship between thermoelectric potential and temperature; 13, good material reproducibility, high mechanical strength, simple manufacturing process, and low cost.

ELEKTROKOMPONEN electrical component features

Most microphones are electret condenser microphones (ECM), a technology with a history of several decades. The working principle of ECM utilizes a polymer diaphragm with permanently isolated charge. Compared to the polymer diaphragm of ECM, MEMS microphones exhibit stable performance across different temperatures and are unaffected by temperature, vibration, humidity, and time. Due to strong heat resistance, MEMS microphones can withstand high-temperature reflow soldering without any change in performance. Since the sensitivity change before and after assembly is minimal, this can even save audio debugging costs during the manufacturing process. Currently, integrated circuit processes are increasingly widely applied in the manufacturing of sensors and sensor interface integrated circuits. This micro-manufacturing process offers advantages such as precision, design flexibility, miniaturization, integration with signal processing circuits, low cost, and mass production. A fundamental resonant frequency in such a low frequency band would result in highly uneven frequency response within the audible frequency range for the microphone, which is unacceptable for microphone applications. When tensile stress exists within the sensitive membrane, its resonant frequency increases, but at the cost of sensitivity. Of course, higher fundamental resonant frequencies can be obtained by adjusting the size of the sensitive membrane, but this will still reduce sensitivity. Thus, piezoresistive schemes are not suitable for the manufacture of micro-microphones. A feasible solution is to adopt a capacitive scheme for manufacturing micro-microphones. The advantage of this method is that all materials used in integrated circuit manufacturing processes can be used for sensor manufacturing. However, manufacturing micro-microphones using a single-chip process is quite difficult because the air medium between the two capacitor plates can only have a very small gap. Moreover, due to size limitations, bias voltage is difficult to satisfy in some application scenarios. Based on these issues, research on capacitive microphones has continued uninterrupted. Compared to traditional electret microphones, micro-electro-mechanical system (MEMS) microphones offer advantages such as small size, good heat resistance, good consistency, good stability, high reliability, and anti-radio frequency interference, and can also output digital signals, facilitating intelligent development.

ELEKTROKOMPONEN electrical component functions

When the distance between an observer or system and a wave source changes, the frequency of the approaching waves shifts; this phenomenon is called the Doppler effect. Sonar and radar are developed based on the principle of this effect. The Doppler effect can be used to create ultrasonic proximity switches, microwave proximity switches, etc. When an object approaches, the reflected signal received by the proximity switch produces a Doppler frequency shift, thereby identifying whether an object is approaching. Proximity switches are widely used in aviation, aerospace technology, and industrial production. In daily life, they are applied in automatic doors in hotels, restaurants, and garages, as well as in automatic hot air blowers. For security and anti-theft purposes, important locations such as archives, accounting departments, financial institutions, museums, and vaults are typically equipped with anti-theft devices composed of various proximity switches. In measurement technology, such as length and position measurement, and in control technology, such as displacement, speed, and acceleration measurement and control, a large number of proximity switches are also used.

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