microsonic electrical components Germany microsonic model microsonic price

microsonic electrical component is a transducer that converts a changing magnetic field into a change in output voltage. Hall sensors are primarily used to measure magnetic fields, and can also measure physical quantities that generate and affect magnetic fields, such as those used in proximity switches, Hall effect devices, position measurement, speed measurement, and current measurement equipment. In its simplest form, the sensor acts as an analog transducer, directly returning a voltage. In a known magnetic field, its distance from the Hall plate can be set. Using multiple sensors, the relative position of the magnet can be inferred. Current flowing through a conductor generates a magnetic field that varies with the current, and Hall effect sensors can measure current without interfering with it. A typical construction integrates the sensor with a wound magnetic core or a permanent magnet next to the conductor being measured. Typically, Hall effect sensors are connected to circuits, allowing the device to operate in digital (on/off) mode, in which case it can be referred to as a switch. Industrial equipment such as cylinders is also used in everyday devices; for example, some printers use them to monitor paper-out and open-cover conditions. When high reliability is required for keyboards, Hall sensors are designed into the keys. Hall effect sensors are commonly used to measure wheel and axle speeds, such as in internal combustion engine ignition timing or tachometers. They are used in brushless DC motors to detect the position of permanent magnets. A wheel with two equidistant magnets will cause the voltage on the sensor to peak twice per cycle; this setup is often used to calibrate the speed of disk drives.

microsonic electrical component principle

The alternating current generated by an automotive alternator is converted to direct current by a rectifier, but its waveform still has irregular fluctuations, which directly affects the accuracy of vehicle ignition; the output voltage cannot remain relatively constant, causing differences in spark plug ignition energy each time, which can easily cause engine vibration, gear shift jerk, slow and weak acceleration, unstable idle speed, and low efficiency of the car air conditioner. This greatly reduces the performance and service life of onboard electrical equipment; coupled with the aging of the circuit system in older cars and the increased circuit impedance, the impact on the vehicle becomes increasingly obvious. The role of an electronic rectifier is to help eliminate noise interference in the vehicle, stabilize output voltage, improve the instantaneous discharge capability of the power system, increase torque output, accelerate throttle response, extend battery life, shorten engine start time, and improve ignition efficiency, especially for small-displacement cars, where the effect is more pronounced. A semiconductor PN junction has high current under forward bias and low current under reverse bias. A rectifier diode is a PN junction diode that uses this unidirectional conductivity of the PN junction to convert alternating current to direct current. Devices with a current capacity below 1 ampere are typically called rectifier diodes, while those above 4 amperes are called rectifiers. Common semiconductor rectifiers include silicon rectifiers and selenium rectifiers, with many product specifications, voltages ranging from tens to thousands of volts, and currents from a few amperes to thousands of amperes. Rectifiers are widely used in various forms of rectified power supplies. High-power rectified power supplies require rectifiers with large current capacity, high breakdown voltage, and good heat dissipation, but these devices have large junction areas and large junction capacitance, resulting in very low operating frequencies, generally below tens of kilohertz. Silicon material has a larger bandgap and good thermal conductivity, making it suitable for manufacturing high-power rectifier devices. High-voltage silicon stacks are often used in high-voltage rectification devices; they consist of multiple rectifier die connected in series, and their reverse withstand voltage is determined by the withstand voltage of the die and the number of series-connected die, with maximum withstand voltage reaching hundreds of kilovolts. If a high-frequency rectifier circuit is used at very high frequencies, when the period of the AC voltage is comparable to the recovery time of the rectifier from on-state to off-state, the rectifier no longer rectifies the high-frequency voltage. To meet the needs of high-frequency operation, gold doping is usually employed in silicon rectifiers to shorten the lifetime of injected minority carriers, thereby reducing recovery time. To reduce the possibility of damage due to overvoltage breakdown and improve the reliability of rectification devices, silicon avalanche rectifiers can be used. In such devices, when the reverse voltage exceeds the allowable peak value, uniform avalanche breakdown occurs across the entire PN junction, allowing the device to operate under high voltage and high current, thus withstanding considerable reverse surge power. Manufacturing such devices requires materials with few defects, uniform resistivity, flat junction surfaces, and appropriate protection of exposed junction areas to avoid surface breakdown. Selenium rectifiers have high overload capacity and strong ability to withstand reverse surge power. In the two basic types of rectifiers based on high-power diodes or thyristors, high-voltage AC power from the grid is converted to DC power by the rectifier.

microsonic electrical component structure

The rated current of the fuse element is not equal to the rated current of the fuse. The rated current of the fuse element is selected based on the load current of the protected equipment, and the rated current of the fuse should be greater than the rated current of the fuse element, determined in coordination with the main electrical appliance. The fuse mainly consists of 10 parts: the fuse element, the housing, and the support, with the fuse element being the key component controlling the fusing characteristics. The material, size, and shape of the fuse element determine the fusing characteristics. Fuse element materials are divided into two categories: low melting point and high melting point. Low melting point materials, such as lead and lead alloys, have low melting points and melt easily; due to their higher resistivity, they are made with larger cross-sectional dimensions, producing more metal vapor upon fusing, and are only suitable for fuses with low breaking capacity. High melting point materials, such as copper and silver, have high melting points and do not melt easily, but due to their lower resistivity, they can be made with smaller cross-sectional dimensions than low melting point elements, producing less metal vapor upon fusing, and are suitable for fuses with high breaking capacity. The shape of the fuse element is divided into wire-like and strip-like. Changing the shape of the variable cross-section can significantly alter the fusing characteristics of the fuse. Fuses have various different fusing characteristic curves, suitable for the needs of different types of protected objects.

microsonic electrical component characteristics

Resolution refers to the ability of a sensor to detect the smallest change in the measured quantity. That is, if the input changes slowly from a non-zero value, when the input change does not exceed a certain value, the sensor's output will not change, meaning the sensor cannot resolve this change in input. Only when the input change exceeds the resolution will the output change. Typically, the resolution at different points within the full-scale range of a sensor is not the same, so the maximum change in input within the full scale that causes a step change in output is commonly used as the indicator for resolution. If the above indicator is expressed as a percentage of the full scale, it is called resolution. Resolution has a negative correlation with sensor stability.

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