REVCON electrical components Germany REVCON model REVCON price

REVCON electrical component is a photodetector that converts light into current or voltage signals depending on the mode of use. The die often uses a photosensitive PN junction, which is highly sensitive to changes in light, exhibits unidirectional conductivity, and changes its electrical characteristics with different light intensities; therefore, the current in the circuit can be changed by varying the light intensity. Photodiodes are also called photoelectric diodes. Photodiodes are similar in structure to semiconductor diodes; their die is a photosensitive PN junction with unidirectional conductivity, so during operation a reverse voltage must be applied. In the absence of light, there is a very small saturated reverse leakage current, i.e., dark current, at which point the photodiode is cut off. When exposed to light, the saturated reverse leakage current increases significantly, forming a photocurrent that varies with the intensity of the incident light. When light irradiates the PN junction, electron-hole pairs are generated in the PN junction, increasing the density of minority carriers. These carriers drift under reverse voltage, causing the reverse current to increase. Therefore, the current in the circuit can be changed by varying the light intensity.

REVCON electrical component structure

Inductors generally consist of a bobbin, winding, shield, encapsulation material, magnetic core or iron core, etc. 1, Bobbin: The bobbin refers to the support for winding the coil. Most large fixed inductors or adjustable inductors (such as oscillator coils, choke coils, etc.) involve winding enameled wire (or silk-covered wire) around the bobbin, then inserting a magnetic core, copper core, or iron core into the inner cavity of the bobbin to increase inductance. Bobbins are usually made of plastic, bakelite, or ceramic, and can be shaped differently according to actual needs. Small inductors (such as color-coded inductors) generally do not use bobbins but wind enameled wire directly onto the magnetic core. Air-core inductors (also known as formless coils or air coils, mostly used in high-frequency circuits) do not use magnetic cores, bobbins, or shields; instead, they are wound on a mold first, then the mold is removed, and a certain distance is maintained between the turns of the coil. 2, Winding: The winding refers to a set of coils with specified functions and is the basic component of an inductor. Windings are divided into single-layer and multi-layer types. Single-layer windings come in two forms: close-wound (wires are wound turn by turn adjacent to each other) and spaced-wound (a certain distance is kept between each turn of wire); multi-layer windings include layered flat winding, random winding, honeycomb winding, etc. 3, Magnetic Core and Magnetic Rod: Magnetic cores and rods are generally made of materials such as nickel-zinc ferrite or manganese-zinc ferrite, and come in various shapes such as "I" shape, cylindrical, cap-shaped, "E" shape, pot core, etc. 4, Iron Core: Iron core materials mainly include silicon steel sheets, permalloy, etc., and their shape is mostly "E" type. 5, Shield: To prevent the magnetic field generated by some inductors during operation from affecting other circuits and components, a metal shield is added (such as oscillator coils in semiconductor radios). Inductors with shields will have increased coil losses, reducing the Q value. 10, Encapsulation Material: Some inductors (such as color-coded inductors, color-ring inductors, etc.) are sealed with encapsulation material after winding to enclose the coil and magnetic core. Encapsulation materials include plastic or epoxy resin.

REVCON 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, the sensor output will not change until the input change exceeds a certain value, meaning the sensor cannot resolve changes in the input below this threshold. Only when the input change exceeds the resolution does the output change. Typically, the resolution at different points within the full-scale range of a sensor is not the same; therefore, 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 this indicator is expressed as a percentage of the full scale, it is called resolution. Resolution has a negative correlation with sensor stability.

REVCON electrical component function

The main functions of potentiometers in circuits include several aspects: 1. Used as a voltage divider: A potentiometer is a continuously adjustable resistor. When adjusting the knob or slider of the potentiometer, the movable contact slides on the resistive element. At this time, an output voltage related to the external voltage applied to the potentiometer and the angle or travel of the movable arm can be obtained at the output terminal. 2. Used as a rheostat: When a potentiometer is used as a rheostat, it should be connected as a two-terminal device, so that a smoothly and continuously changing resistance value can be obtained within the travel range of the potentiometer. 3. Used as a current controller: When a potentiometer is used as a current controller, one of the selected current output terminals must be the terminal led out from the sliding contact.

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