eisfink maier electrical components Germany eisfink maier models eisfink maier prices

eisfink maier electrical components are energy conversion devices that convert sound signals into electrical signals. Types include moving-coil, condenser, electret, and the recently emerging silicon microphones, as well as liquid microphones and laser microphones. Most microphones are electret condenser microphones, which operate using a polymer diaphragm with permanently isolated charge.

eisfink maier electrical components applications

Inductors mainly serve functions such as filtering, oscillation, delay, and wave trapping in circuits, as well as signal selection, noise filtering, current stabilization, and suppression of electromagnetic interference. The most common function of an inductor in a circuit is to form an LC filter circuit together with a capacitor. Capacitors have the characteristic of blocking DC and passing AC, while inductors have the function of passing DC and blocking AC. If DC power accompanied by many interference signals passes through an LC filter circuit, the AC interference signals will be converted into heat energy by the inductor and consumed; when the relatively pure DC current passes through the inductor, the AC interference signals within it are also converted into magnetic induction and heat energy. Higher frequencies are more easily impeded by the inductor, which suppresses higher-frequency interference signals. Inductors have the characteristic of blocking AC while allowing DC to pass smoothly; the higher the frequency, the greater the coil impedance. Therefore, the main functions of inductors are to isolate and filter AC signals, or to form resonant circuits with capacitors, resistors, and other components.

eisfink maier electrical components features

Utilizing existing DIN-rail terminal block frame screw connection technology, and adding circuits composed of electronic components, optoelectronic transmission coupling is achieved. The core of automatic control is that the control unit must be reliably isolated from various sensors and actuators to avoid interference. Sanmenwan WUKG9 opto-isolated terminals can effectively perform this function, ensuring that field signals match the low voltage required by electronic control devices. They can also serve as interface components between peripheral equipment for process control and control, signal, and regulator devices, and are suitable for different voltage and power ranges. Opto-isolated terminals have advantages such as low control signal loss, high switching frequency, no mechanical contact bounce, wear-free switching, high insulation voltage, resistance to vibration, independence from position, and long service life, so they are widely used in the field of automatic control.

eisfink maier electrical components principles

The main raw material for ferrite beads is ferrite. Ferrite is a ferrimagnetic material with a cubic lattice structure. Ferrite materials are iron-magnesium alloys or iron-nickel alloys; their manufacturing process and mechanical properties are similar to ceramics, and their color is gray-black. One type of magnetic core frequently used in electromagnetic interference filters is ferrite material, and many manufacturers provide ferrite materials specifically for electromagnetic interference suppression. This material is characterized by very high high-frequency losses and high permeability, which minimizes the capacitance generated between the windings of an inductor coil under high-frequency, high-impedance conditions. For ferrites used to suppress electromagnetic interference, the most important performance parameters are permeability μ and saturation flux density Bs. Permeability μ can be expressed as a complex number, where the real part constitutes inductance and the imaginary part represents loss, which increases with frequency. Therefore, its equivalent circuit is a series circuit composed of inductance L and resistance R, where both L and R are functions of frequency. When a wire passes through this ferrite core, the resulting inductive impedance formally increases with frequency, but the mechanism is completely different at different frequencies. In the low-frequency range, the impedance consists of the inductive reactance of the inductor. At low frequencies, R is very small, the core permeability is high, so the inductance is large, and L plays the main role. Electromagnetic interference is suppressed by reflection, and at this time the core loss is small. The entire device is an inductor with low loss and high Q characteristics. This type of inductor is prone to resonance, so in the low-frequency range, interference may sometimes increase after using ferrite beads. In the high-frequency range, the impedance consists of the resistive component. As frequency increases, the core permeability decreases, leading to a decrease in inductance and inductive reactance. However, at this time, the core loss increases, the resistive component increases, leading to an increase in total impedance. When high-frequency signals pass through the ferrite, electromagnetic interference is absorbed and dissipated as heat energy. Ferrite suppression components are widely used on printed circuit boards, power lines, and data lines. For example, adding ferrite suppression components at the power line entry point of a printed board can filter out high-frequency interference. Ferrite rings or beads are specifically used to suppress high-frequency interference and spike interference on signal lines and power lines, and they also have the ability to absorb electrostatic discharge pulse interference. The value of the two components is proportional to the length of the bead, and the length of the bead has a significant impact on the suppression effect; the longer the bead, the better the suppression effect. For power supply filtering, inductors can be used. The circuit symbol for a ferrite bead is an inductor, but the model number indicates that a ferrite bead is used. In terms of circuit function, ferrite beads and inductors operate on the same principle, differing only in their frequency characteristics. Ferrite beads are composed of oxide magnets. Ferrite beads only have a significant hindering effect on high-frequency signals; their resistance is much lower than that of inductors at low frequencies. Ferrite beads are a type of anti-interference component with rapid application development; they are inexpensive, easy to use, and highly effective at filtering high-frequency noise.

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