AMTMERICITECHNI electrical components Germany AMTMERICITECHNI model AMTMERICITECHNI price

AMTMERICITECHNI electrical components refer to an electrical device that disconnects the circuit by melting the fuse element with the heat generated by itself when the current exceeds the specified value. A fuse is a current protection device made based on the principle that after the current exceeds the specified value for a period of time, the heat generated by itself melts the fuse element, thereby disconnecting the circuit. Fuses are widely used in high and low voltage distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, and are one of the most commonly used protective devices. An electrical device that uses a metal conductor as a fuse element connected in series in the circuit; when overload or short-circuit current passes through the fuse element, it melts due to its own heating, thereby breaking the circuit. The fuse has a simple structure and is easy to use, and is widely used in power systems, various electrical equipment, and household appliances as a protective device.

AMTMERICITECHNI electrical component characteristics

Common types include RC phase-shifting bridge trigger circuits, unijunction transistor trigger circuits, bipolar junction transistor trigger circuits, and trigger circuits that use small thyristors to trigger large thyristors, etc. The main parameters of thyristors are: 1, rated on-state average current IT Under certain conditions, the average value of the 50 Hz sinusoidal half-wave current that can continuously pass between the anode and cathode. 2, forward blocking peak voltage VPF When the gate is open and no trigger signal is applied, and the anode forward voltage has not exceeded the turn-on voltage, the forward peak voltage that can be repeatedly applied across the thyristor. The forward voltage peak withstandable by the thyristor must not exceed this parameter value given in the manual. 3, reverse blocking peak voltage VPR When a reverse voltage is applied to the thyristor and it is in the reverse off state, the reverse peak voltage that can be repeatedly applied across the thyristor. During use, this parameter value given in the manual must not be exceeded. 4, trigger voltage VGT At the specified ambient temperature, when a certain voltage is applied between the anode and cathode, the minimum gate current and voltage required for the thyristor to switch from the off state to the on state. 9, holding current IH At the specified temperature, with the gate circuit open, the minimum anode forward current required to maintain the thyristor in the on state. Many new types of thyristor components have been introduced, such as fast thyristors suitable for high-frequency applications, bidirectional thyristors that can be controlled to conduct in both directions using positive or negative trigger signals, and thyristors that can be turned on by a positive trigger signal and turned off by a negative trigger signal, etc.

AMTMERICITECHNI electrical component applications

The basic circuits of analog integrated circuits include current sources, single-stage amplifiers, filters, feedback circuits, current mirror circuits, etc. Higher-level basic circuits composed of them include operational amplifiers and comparators, and even higher-level circuits include switched-capacitor circuits, phase-locked loops, ADC/DAC, etc. Based on the response relationship between output and input signals, analog integrated circuits can be divided into two major categories: linear integrated circuits and nonlinear integrated circuits. The response between the output and input signals of the former is usually linear; the shape of the output signal is similar to that of the input signal, only amplified by a fixed coefficient. The response of the output signal to the input signal in nonlinear integrated circuits exhibits a nonlinear relationship, such as square law or logarithmic relationships, hence they are called nonlinear circuits. Common nonlinear circuits include oscillators, timers, and phase-locked loop circuits. Typical applications of analog integrated circuits are shown in the figure below. External natural signals collected by various sensors or antennas, such as temperature, humidity, optical, piezoelectric, and acoustic sensors, are pre-processed by analog circuits and converted into suitable digital signals for input into digital systems; signals processed by the digital system are then post-processed by analog circuits and converted into analog signals such as sound, images, and radio waves for output.

AMTMERICITECHNI electrical component classification

Fuses can be divided into high-voltage fuses and low-voltage fuses according to the operating voltage. According to the protected object, they can be divided into fuses for protecting transformers and general electrical equipment, fuses for protecting voltage transformers, fuses for protecting power capacitors, fuses for protecting semiconductor components, fuses for protecting motors, and fuses for protecting household appliances, etc. According to the structure, they can be divided into open, semi-enclosed, cartridge, and expulsion fuses. Open fuses have a simple structure, with the fuse element completely exposed to the air and supported by porcelain pillars without bases, suitable for low-voltage outdoor use. They produce significant noise and light in the atmosphere when breaking current. In semi-enclosed fuses, the fuse element is mounted on a porcelain frame and inserted into a porcelain box with metal sockets at both ends, suitable for low-voltage indoor use. The noise and light produced when breaking current are blocked by the porcelain box. In cartridge fuses, the fuse element is installed inside the fuse body. It is then inserted into a base or directly connected to the circuit for use. The fuse link is a fully sealed insulating tube with metal caps or contact blades at both ends. If the insulating tube of this type of fuse is filled with quartz sand, it has a current-limiting effect when breaking current, which can greatly improve the breaking capacity, so it is also called a high-breaking-capacity fuse. If the tube is evacuated, it is called a vacuum fuse. If the tube is filled with SF6 gas, it is called a SF6 fuse, the purpose of which is to improve arc extinguishing performance. Since quartz sand, vacuum, and SF10 gas all have good insulation properties, this type of fuse is suitable for both low and high voltage. Expulsion fuses have the fuse element installed in an insulating tube made of solid gas-generating material. The solid gas-generating material can be electrical anti-white cardboard or organic glass material, etc. When short-circuit current passes through the fuse element, the element melts immediately, producing an arc. The high-temperature arc causes the solid gas-generating material to rapidly decompose and produce a large amount of high-pressure gas, thereby ejecting the ionized gas with the arc from both ends of the tube, emitting intense noise and light, and extinguishing the arc when the AC current crosses zero, thus breaking the current. The insulating tube is usually mounted on an insulating support to form the complete fuse. Sometimes the upper end of the insulating tube is made movable, detaching and dropping immediately after breaking the current; this type of expulsion fuse is commonly known as a drop-out fuse.

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