AVK Group electrical components Germany AVK Group models AVK Group prices

AVK Group electrical components are energy conversion devices that convert sound signals into electrical signals. Categories 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.

AVK Group electrical component features

Mercury switches achieve switching on and off based on the movement of mercury encapsulated within a glass or metal housing; therefore, compared to mechanical switches, mercury switches have many features: (1) Can be used in harsh environmental conditions. Since the mercury switch is sealed, the internal mercury is isolated from the outside environment, allowing it to be used in environments with oil, steam, dust, and corrosive gases. (2) Requires small external force for switching. Mercury is the only metal that remains liquid at room temperature; it has high surface tension and specific gravity. A slight external force tilting the mercury switch causes the mercury to move, thereby achieving switching. (3) Mercury has good conductivity, and the contact resistance between the electrodes of a mercury switch is generally very low. (4) The current allowed through a mercury switch depends on the electrode material. (5) Since the switching of a mercury switch is determined by the gravity of the mercury, it can operate reliably over long periods. (6) The electrode contacts are liquid-to-liquid, producing no noise. (7) Since mercury can flow, the mercury switch can turn on or off as long as the acceleration exceeds a set value, allowing it to be used as a vibration-sensitive element. (8) Small size, diverse forms, and fully sealed device. (9) Simple structure and low price. (10) High quality, premium products, suitable for beginners

AVK Group electrical component classification

Classification by operating principle or structural characteristics of relays: (1) Electromagnetic relay: An electrical relay that operates using the attractive force generated between the electromagnet core and the armature by the current in the input circuit. (2) Solid-state relay: A relay where electronic components perform its functions without mechanical moving parts, providing isolation between input and output. (3) Temperature relay: A relay that activates when the ambient temperature reaches a specified value. (4) Reed relay: A relay that opens, closes, or switches circuits using the action of reeds sealed in a tube, which serve both as contact springs and part of the armature magnetic circuit. (5) Time delay relay: A relay whose output section delays or limits operation to a specified time before closing or opening the controlled circuit when an input signal is applied or removed. (6) High-frequency relay: A relay used for switching high-frequency and RF lines with minimal loss. (7) Polarized relay: A relay that operates due to the combined effect of a polarizing magnetic field and the magnetic field generated by the control current passing through the control coil. The direction of relay operation depends on the direction of the current flowing through the control coil. (8) Other types of relays: Such as optical relays, acoustic relays, thermal relays, instrument relays, Hall effect relays, differential relays, etc.

AVK Group electrical component applications

Inductors in circuits mainly serve functions such as filtering, oscillation, delay, and notch filtering, 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 an inductor are to isolate and filter AC signals, or to form resonant circuits with capacitors, resistors, etc.

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