erico electrical components German erico models erico prices

erico electrical components are devices that convert alternating current to direct current, and can be used in power supply units and for detecting radio signals, among other applications. Rectifiers can be made from vacuum tubes, ignitrons, solid-state silicon semiconductor diodes, mercury arcs, etc. Conversely, a device that converts direct current to alternating current is called an "inverter". In standby UPS systems, only battery charging is required without supplying power to the load, so only a charger is present. In double-conversion UPS systems, this device supplies power to the inverter and charges the battery, hence it is called a rectifier/charger. A rectifier is a rectification device; simply put, it is a device that converts AC to DC. It has two main functions: first, to convert AC to DC, which after filtering is supplied to the load or to the inverter; second, to provide charging voltage to the battery. Therefore, it also serves as a charger.

erico electrical component applications

PN junction photodiodes, like other types of photodetectors, are widely used in devices such as photoresistors, charge-coupled devices, and photomultiplier tubes. They can output corresponding analog electrical signals based on the illuminance of received light or switch between different states in digital circuits. Photodiodes are also applied in consumer electronics, such as CD players, smoke detectors, and infrared remote control devices for televisions and air conditioners. For many applications, photodiodes or other photoconductive materials can be used. They are all suitable for measuring light and are often used in camera exposure meters, automatic brightness adjustment for street lights, etc. All types of optical sensors can be used to detect sudden light exposure or to detect light emission within the same circuit system. Photodiodes are often combined with light-emitting devices to form a module, commonly known as an optocoupler. This allows the analysis of external mechanical component motion by analyzing the received light conditions. Another function of photodiodes is to act as an intermediary between analog and digital circuits, allowing these two circuit sections to be coupled via optical signals, which improves circuit safety. In scientific research and industry, photodiodes are often used for precise measurement of light intensity because they have better linearity than other photoconductive materials. In medical equipment, photodiodes are also widely used, such as in X ray computed tomography and pulse detectors. PIN junction photodiodes are generally not used to measure very low light intensities. If high-sensitivity detectors are needed under weak light conditions, avalanche photodiodes, charge-coupled devices, or photomultiplier tubes can be employed, such as in astronomy, spectroscopy, night vision equipment, laser rangefinders, and other applications.

erico electrical component structure

The simplest switch consists of two metal pieces called "contacts"; when the two contacts touch, they complete the current circuit, and when they do not touch, the current path is open. When selecting contact metals, their resistance to corrosion must be considered, because most metals form insulating oxides after oxidation, preventing the contacts from working properly. Selection of contact metals also requires consideration of factors such as electrical conductivity, hardness, mechanical strength, cost, and toxicity. Sometimes anti-corrosion metals are plated onto the contacts. Plating is generally applied to the contact surfaces to avoid performance degradation due to oxides. Sometimes non-metallic conductive materials, such as conductive plastics, are used for the contact surfaces. In addition to contacts, switches have movable parts that make or break the contact connection. Switches can be classified into lever switches, push-button switches, rocker switches, etc., based on the different movable parts, and the movable parts can also be other types of mechanical linkages.

erico electrical component principles

A resistor consists of three parts: the resistive element, the substrate, and the leads (for solid-core resistors, the resistive element and substrate are combined into one), and only the resistive element determines the resistance value. The volt-ampere characteristic is represented by a graphical curve showing the relationship between voltage and current at the resistor terminals; when voltage and current are proportional (the characteristic is a straight line), it is called a linear resistor; otherwise, it is called a non-linear resistor. The rated power of a resistor is the maximum power allowed to be dissipated continuously at the rated temperature (maximum ambient temperature) tR. For each type of resistor, a maximum operating voltage is also specified; that is, even if the rated power is not reached, the maximum operating voltage must not be exceeded when the resistance value is high. The rated power of a resistor refers to the maximum power allowed to be consumed during long-term continuous operation in DC or AC circuits. Load characteristics: When the ambient operating temperature is below tR, the resistor must not exceed its rated power; when exceeding tR, the load power must be reduced. Each type of resistor has specified load characteristics. In addition, the allowable load decreases under low atmospheric pressure. Under pulse load conditions, the average pulse power is much lower than the rated power, and separate specifications usually apply.

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