Noratel electrical components Germany Noratel model Noratel price

Noratel electrical components are devices that convert alternating current into direct current, and can be used in power supply units and for detecting radio signals, etc. Rectifiers can be made from vacuum tubes, ignitrons, solid-state silicon semiconductor diodes, mercury arcs, etc. Conversely, a device that converts direct current into alternating current is called an "inverter". In standby UPS, it is only necessary to charge the battery, not to supply power to the load, so there is only a charger. In double-conversion UPS, this device supplies power to the inverter and also charges the battery, so it is called a rectifier/charger. A rectifier is a rectifying device; simply put, it is a device that converts AC to DC. It has two main functions: first, to convert alternating current into direct current, which is then filtered and supplied to the load or to the inverter; second, to provide charging voltage to the battery. Therefore, it also acts as a charger.

Noratel electrical component principle

Photoelectric sensors generally consist of 2 parts: processing channels and processing elements. Their basic principle is based on the photoelectric effect, converting changes in the measured quantity into changes in optical signals, and then using photoelectric elements to further convert non-electrical signals into electrical signals. The photoelectric effect refers to the phenomenon where light irradiating an object can be viewed as a stream of photons with certain energy bombarding the object. At this time, the photon energy is transferred to electrons, and the entire energy of one photon is absorbed by one electron at once. After the electron receives the energy transmitted by the photon, its state changes, thereby causing the corresponding electrical effect in the object exposed to light. The photoelectric effect is usually divided into 7 categories: (1) The phenomenon where electrons escape from the surface of an object under the action of light is called the external photoelectric effect, such as in phototubes and photomultiplier tubes; (2) The phenomenon where the resistivity of an object changes under the action of light is called the internal photoelectric effect, such as in photoresistors and phototransistors; (3) The phenomenon where an object generates an electromotive force in a certain direction under the action of light is called the photovoltaic effect, such as in photocells. Photoelectric detection methods have advantages such as high precision, fast response, and non-contact operation, and can measure many parameters. The sensor structure is simple and flexible in form, so photoelectric sensors are widely used in detection and control. Photoelectric sensors are key components for achieving photoelectric conversion in various photoelectric detection systems; they are devices that convert optical signals (visible and ultraviolet laser light) into electrical signals. Photoelectric sensors use photoelectric devices as conversion elements. They can be used to detect non-electrical physical quantities that directly cause changes in light intensity, such as light intensity, illuminance, radiation temperature measurement, gas composition analysis, etc.; they can also be used to detect other non-electrical quantities that can be converted into changes in light intensity, such as part diameter, surface roughness, strain, displacement, vibration, speed, acceleration, as well as object shape and working status recognition. Photoelectric sensors have characteristics such as non-contact operation, fast response, and reliable performance, so they are widely used in industrial automation devices and robots. New photoelectric devices continue to emerge, especially the birth of CCD image sensors, which has opened a new chapter for the further application of photoelectric sensors.

Noratel electrical component characteristics

So-called dynamic characteristics refer to the output characteristics of a sensor when the input changes. In practical work, the dynamic characteristics of sensors are often expressed by their response to certain standard input signals. This is because the response of a sensor to standard input signals is easy to obtain through experimental methods, and there is a certain relationship between its response to standard input signals and its response to arbitrary input signals; often, knowing the former allows one to deduce the latter. The most commonly used standard input signals are step signals and sinusoidal signals, so the dynamic characteristics of sensors are also often expressed by step response and frequency response.

Noratel electrical component parameters

The main parameters of transistors include current amplification factor, dissipation power, frequency characteristics, maximum collector current, maximum reverse voltage, and reverse current. Amplification factor: The DC current amplification factor, also known as the static current amplification factor or DC amplification ratio, refers to the ratio of the transistor collector current to the base current when there is no changing signal input in the static state. AC amplification factor: The AC amplification factor, also known as the AC current amplification factor or dynamic current amplification factor, refers to the ratio of the change in transistor collector current to the change in base current under AC conditions. Dissipation power: Dissipation power, also known as the maximum allowable collector dissipation power PCM, refers to the maximum collector dissipation power when the transistor parameter changes do not exceed the specified allowable values. Dissipation power is closely related to the transistor's maximum allowable junction temperature and maximum collector current. When using a transistor, its actual power consumption must not exceed the PCM value, otherwise it will cause damage to the transistor due to overload. When the operating frequency of a transistor exceeds the cutoff frequency, its current amplification factor value will decrease as the frequency increases. The maximum oscillation frequency refers to the frequency at which the transistor's power gain drops to 12. Generally, the maximum oscillation frequency of high-frequency transistors is lower than the common-base cutoff frequency, while the characteristic frequency is higher than the common-base cutoff frequency and lower than the common-collector cutoff frequency. Maximum current: The maximum collector current refers to the maximum current allowed to pass through the transistor collector. Maximum reverse voltage: The maximum reverse voltage refers to the highest operating voltage allowed to be applied to the transistor during operation. It includes the collector-emitter reverse breakdown voltage, collector-base reverse breakdown voltage, and emitter-base reverse breakdown voltage. Collector reverse breakdown voltage refers to the maximum allowable reverse voltage between the collector and emitter when the transistor base is open. Base reverse breakdown voltage refers to the maximum allowable reverse voltage between the collector and base when the transistor emitter is open. Emitter reverse breakdown voltage refers to the maximum allowable reverse voltage between the emitter and base when the transistor collector is open. The reverse current between the bases, also known as the collector junction reverse leakage current, refers to the reverse current between the collector and base when the transistor emitter is open. The reverse breakdown current between the emitters refers to the reverse leakage current between the collector and emitter when the transistor base is open, also known as the penetration current. The smaller this current value, the better the performance of the transistor.

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