METALISNEJDEK electrical components Germany METALISNEJDEK model METALISNEJDEK price

METALISNEJDEK electrical components are instruments used to transform voltage. However, the purpose of a transformer in transforming voltage is to facilitate the transmission of electrical energy, so its capacity is large, generally calculated in kilovolt-amperes or megavolt-amperes; whereas the purpose of a voltage transformer in transforming voltage is mainly to supply power to measuring instruments and relay protection devices, to measure the voltage, power, and electrical energy of the line, or to protect valuable equipment, motors, and transformers in the line when a fault occurs. Therefore, the capacity of a voltage transformer is very small, generally only a few volt-amperes or tens of volt-amperes, with a maximum not exceeding one thousand volt-amperes.

METALISNEJDEK electrical component principle

The basic working principle of an optical fiber sensor is to guide light from a light source through an optical fiber into a modulator, causing the optical properties of the light (such as intensity, wavelength, frequency, phase, polarization state, etc.) to change after interacting with the parameter to be measured in the modulation zone. This is called the modulated signal light. The measurement is then completed by utilizing the influence of the measured quantity on the transmission characteristics of the light. There are two types of measurement principles for optical fiber sensors: (1) Principle of intrinsic optical fiber sensors. Intrinsic optical fiber sensors utilize the sensitivity of the optical fiber to environmental changes to convert input physical quantities into modulated optical signals. Their working principle is based on the optical modulation effect of the optical fiber, which is the phenomenon where its light transmission characteristics, such as phase and light intensity, change when external environmental factors such as temperature, pressure, electric field, and magnetic field change. Therefore, if the changes in light phase and light intensity passing through the optical fiber can be measured, the changes in the measured physical quantity can be determined. This type of sensor is also known as a sensitive element type or functional optical fiber sensor. The point source beam of the laser is diffused into parallel waves and split into two paths by a beam splitter: one is the reference path, and the other is the measurement path. External parameters (temperature, pressure, vibration, etc.) cause changes in the length of the optical fiber and the optical phase, thereby generating different numbers of interference fringes. By counting their lateral movement, temperature or pressure can be measured. (10) Principle of extrinsic optical fiber sensors. An extrinsic optical fiber sensor is a measurement system composed of a light detection element (sensitive element), an optical fiber transmission circuit, and a measurement circuit. Since the optical fiber serves only as the medium for light propagation, it is also called a non-functional or light-transmitting optical fiber sensor.

METALISNEJDEK electrical component classification

1, fuse resistors: Also known as fusible resistors, they serve the dual function of a resistor and a fuse under normal conditions. When a circuit fault causes their power to exceed the rated power, they will blow like a fuse to disconnect the connected circuit. Fuse resistors generally have low resistance values and low power ratings. 5, sensitive resistors: Refer to resistors whose resistance values have sensitive characteristics to certain physical quantities (such as temperature, humidity, light, voltage, mechanical force, and gas concentration). When these physical quantities change, the resistance value of the sensitive resistor changes accordingly, presenting different resistance values. Based on sensitivity to different physical quantities, sensitive resistors can be classified into thermistors, humidity-sensitive resistors, photoresistors, varistors, force-sensitive resistors, magnetoresistors, and gas-sensitive resistors. The materials used for sensitive resistors are almost all semiconductor materials, so these resistors are also called semiconductor resistors. The resistance value of a thermistor changes with temperature; a negative temperature coefficient thermistor has a resistance that decreases as temperature rises. Negative temperature coefficient thermistors are widely used and can be further divided into general-purpose NTC thermistors, voltage-stabilizing NTC thermistors, and temperature-measuring NTC thermistors. A photoresistor's resistance value changes with the intensity of incident light; when incident light increases, the resistance of the photoresistor decreases, and when incident light weakens, the resistance value increases.

METALISNEJDEK electrical component function

In a DC circuit, a capacitor is equivalent to an open circuit. A capacitor is a component capable of storing electric charge and is one of the most commonly used electronic components. Starting with the structure of a capacitor, the simplest capacitor consists of two end plates and an insulating dielectric medium in between (including air). After being energized, the plates become charged, forming a voltage (potential difference). However, due to the insulating material in the middle, the entire capacitor does not conduct electricity. However, this situation holds under the premise that the critical voltage (breakdown voltage) of the capacitor is not exceeded. We know that any material is relatively insulating; when the voltage across a material increases to a certain level, the material can conduct electricity. We call this voltage the breakdown voltage. Capacitors are no exception; once a capacitor breaks down, it is no longer an insulator. However, at the secondary school level, such voltages are not seen in circuits, so they operate below the breakdown voltage and can be regarded as insulators. However, in an AC circuit, because the direction of current changes over time according to a certain functional relationship. The charging and discharging process of a capacitor takes time. During this period, a changing electric field is formed between the plates, and this electric field is also a function that changes with time. In fact, current passes through the capacitor in the form of an electric field.

Weidou Intelligent Technology specializes in selling German METALISNEJDEK connectors, METALISNEJDEK switches, METALISNEJDEK relays, METALISNEJDEK controllers, METALISNEJDEK plugs, METALISNEJDEK sensors, METALISNEJDEK resistors, METALISNEJDEK capacitors, METALISNEJDEK buses, METALISNEJDEK modules, METALISNEJDEK cables, METALISNEJDEK power supplies, METALISNEJDEK interfaces, METALISNEJDEK gateways, METALISNEJDEK circuit breakers, METALISNEJDEK original imports from Germany. Welcome customers to inquire and order.