Aqeri electrical components Germany Aqeri model Aqeri price

Aqeri electrical components refer to an electronic component that can open a circuit, interrupt current flow, or direct it to another circuit. The most common switches are electromechanical devices operated by humans, featuring one or more electrical contacts. "Closed" contacts indicate that the electrical contact is conductive, allowing current to flow; "open" switch status indicates that the electrical contact is non-conductive, forming an open circuit and preventing current flow. The simplest switch consists of two metal pieces called "contacts"; when the two contacts touch, they complete the current loop, and when they do not touch, the current path is open. When selecting contact metals, consideration must be given to their corrosion resistance, as most metals form insulating oxides after oxidation, preventing the contacts from functioning properly. Selection of contact metals must also consider factors such as electrical conductivity, hardness, mechanical strength, cost, and toxicity. Contacts are sometimes plated with corrosion-resistant metals. Plating is generally applied to the contact surface to prevent performance degradation due to oxides. Sometimes, non-metallic conductive materials, such as conductive plastics, are used for the contact surface. In addition to contacts, switches contain movable parts that make or break the contact. Switches can be classified into toggle switches, push-button switches, rocker switches, etc., based on the type of movable part, which can also be other forms of mechanical linkages.

Aqeri electrical component principle

A crystal diode is a p-n junction formed by p-type semiconductor and n-type semiconductor. A space charge layer forms on both sides of the interface, establishing a built-in electric field. When no external voltage is applied, the diffusion current caused by the carrier concentration difference across the p-n junction equals the drift current caused by the built-in electric field, resulting in electrical equilibrium. When a forward bias voltage is applied externally, the mutual cancellation between the external electric field and the built-in electric field increases the carrier diffusion current, causing a forward current. When a reverse bias voltage is applied externally, the external electric field and the built-in electric field are further strengthened, forming a reverse saturation current within a certain reverse voltage range that is independent of the reverse bias voltage value. When the applied reverse voltage reaches a certain level, the electric field intensity in the space charge layer of the p-n junction reaches a critical value, triggering a carrier multiplication process. This generates a large number of electron-hole pairs, resulting in a significant reverse breakdown current, known as the diode breakdown phenomenon.

Aqeri electrical component characteristics

Dynamic characteristics refer to the output behavior of a sensor when the input changes. In practical applications, the dynamic characteristics of a sensor are often represented by its response to certain standard input signals. This is because the sensor's response to standard input signals is easily obtained through experimental methods, and there is a definite relationship between its response to standard input signals and its response to arbitrary input signals; often, knowing the former allows inference of the latter. The most commonly used standard input signals are step signals and sinusoidal signals, so the dynamic characteristics of sensors are also commonly expressed in terms of step response and frequency response.

Aqeri electrical component structure

Common electrodynamic cone paper loudspeaker. Electrodynamic cone loudspeakers, formerly known as paper cone loudspeakers, still primarily use paper cones for the diaphragm, but many polymer material diaphragms and metal diaphragms have also appeared, making the term cone loudspeaker more accurate. A cone paper loudspeaker mainly consists of three parts: the magnetic circuit system (permanent magnet, pole piece, magnetic plate), the vibration system (paper cone, voice coil), and the support auxiliary system (spider, basket, surround). 1. Voice coil: The voice coil is the drive unit of the cone paper loudspeaker. It is made of very fine copper wire wound in two layers around a paper tube, typically with dozens of turns, also known as a coil. It is placed in the magnetic gap formed by the magnetic pole piece and the magnetic plate. The voice coil is fixed to the paper cone. When an audio current signal passes through the voice coil, the vibration of the voice coil drives the paper cone to vibrate. 2. Paper cone: There are many types of materials used for the cone diaphragm of cone paper loudspeakers, generally divided into natural fibers and synthetic fibers. Natural fibers often include cotton, wood, wool, and silk, while synthetic fibers include rayon, nylon, and fiberglass. As the paper cone is the sound radiation component of the loudspeaker, it largely determines the sound reproduction performance. Therefore, regardless of the type of paper cone, it must be lightweight and rigid, and must not deform due to changes in ambient temperature or humidity. 3. Surround: The surround is designed to ensure axial movement of the paper cone along the loudspeaker axis and restrict lateral movement, while also preventing air leakage between the front and back of the paper cone. In addition to materials commonly used for paper cones, surrounds utilize plastics, natural rubber, etc., which are thermally bonded to the paper cone. 9. Spider: The spider supports the junction between the voice coil and the paper cone, ensuring it remains vertical and not skewed. The spider has many concentric rings, allowing the voice coil to move freely up and down in the magnetic gap without lateral movement, ensuring the voice coil does not touch the magnetic plate. The dust cap on the spider prevents external dust from entering the magnetic gap, avoiding friction between dust and the voice coil, which could cause abnormal sounds in the loudspeaker. Generally, a loudspeaker consists of a magnet, frame, spider, molded surround, and cone paper cone.

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