wohner electrical components Germany wohner model wohner price

wohner electrical components are indispensable measuring instruments for departments such as power electronics, generally with the main purpose of measuring voltage, current, and resistance. Multimeters are divided into analog multimeters and digital multimeters according to the display method. It is a multi-function, multi-range measuring instrument. General multimeters can measure DC current, DC voltage, AC current, AC voltage, resistance, and audio levels. Some can also measure AC current, capacitance, inductance, and some semiconductor parameters (such as β). A multimeter is a magnetoelectric instrument equipped with a rectifier that can measure various electrical parameters such as AC and DC current, voltage, and resistance. For each electrical quantity, there are generally several ranges. Also known as a multi-meter or simply multi-meter. A multimeter consists of a magnetoelectric ammeter (meter head), measuring circuit, and selector switch. Through the switching of the selector switch, various electrical parameters can be measured conveniently. The main basis for its circuit calculation is Ohm's law for closed circuits. There are many types of multimeters, and they should be selected according to different requirements during use.

wohner electrical component structure

1. LCD panel: The LCD panel includes polarizing film, glass substrate, black matrix, color filter, protective film, common electrode, alignment layer, liquid crystal layer (liquid crystal, spacers, sealant), capacitor, display electrode, prism layer, and diffuser layer. The polarizing film, also known as a polarizer, is divided into an upper polarizer and a lower polarizer. The polarization functions of the upper and lower polarizers are perpendicular to each other. Their function is like a fence, blocking light wave components as required, for example, blocking light wave components perpendicular to the polarizer fence, while only allowing light wave components parallel to the fence to pass through. 2. Glass substrate: In liquid crystal displays, glass substrates can be divided into upper substrates and lower substrates. Their main function is to hold the liquid crystal material in the space between the two substrates. The material of the glass substrate is generally alkali-free borosilicate glass with excellent mechanical properties, heat resistance, and chemical corrosion resistance. For TFT-LCD, one layer of glass substrate is distributed with TFT, and the other layer of glass substrate is deposited with color filters. 3. Black matrix: The black matrix uses materials with high light-shielding performance to separate the three primary colors (red, green, and blue) in the color filter (to prevent color mixing) and prevent light leakage, thereby helping to improve the contrast of each color block. In addition, in TFT-LCD, the black matrix can also conceal internal electrode wiring or thin-film transistors. Color filters, also known as color filter membranes, function to produce 3 primary colors of red, green, and blue, achieving full-color display of the liquid crystal display. 4. Alignment film: The alignment film, also known as the orientation film or alignment layer, functions to allow liquid crystal molecules to achieve uniform arrangement and orientation at the microscopic level. 5. Transparent electrode: Transparent electrodes are divided into common electrodes and pixel electrodes. The input signal voltage is applied between the pixel electrode and the common electrode. Transparent electrodes are usually formed by depositing indium tin oxide (ITO) material on the glass substrate to constitute a transparent conductive layer. 6. Liquid crystal material: Liquid crystal material plays a role similar to a light valve in LCD, controlling the brightness of transmitted light to achieve information display effects. 7. Driver IC: The driver IC is actually a set of integrated circuit chip devices used to adjust and control the phase, peak value, frequency, etc., of the potential signals on the transparent electrodes, establishing a driving electric field to finally realize the information display of the liquid crystal. In the LCD panel, the active matrix liquid crystal display is constructed by sealing twisted nematic (TN) type liquid crystal material between two glass substrates. Among them, the upper glass substrate close to the display screen is deposited with red, green, and blue (RGB) three-color color filters (or color filter membranes), black matrix, and common transparent electrodes. The lower glass substrate (the substrate farther from the display screen) is installed with thin-film transistor (TFT) devices, transparent pixel electrodes, storage capacitors, gate lines, signal lines, etc. Alignment films (or alignment layers) are prepared on the inner sides of the two glass substrates to orient the liquid crystal molecules. Liquid crystal material is injected between the two glass substrates, and spacers are dispersed to ensure the uniformity of the gap. The periphery is bonded with frame sealant to provide a sealing effect; the common electrodes of the upper and lower glass substrates are connected using silver dot adhesive technology. Polarizers (or polarizing films) are attached to the outer sides of the upper and lower glass substrates, respectively. When a voltage is applied between the pixel transparent electrode and the common transparent electrode, the arrangement state of the liquid crystal molecules changes. At this time, the intensity of incident light passing through the liquid crystal also changes. Liquid crystal displays utilize the optical rotation of liquid crystal materials combined with electric field control to achieve information display. 8. Backlight module: LCD products are non-emissive electronic devices that do not have light-emitting characteristics themselves. They must rely on the emission of light sources in the backlight module to obtain display performance. Therefore, the brightness of LCD is determined by its backlight module. It can be seen that the performance of the backlight module directly affects the display quality of the LCD panel. The backlight module includes illumination light sources, reflectors, light guide plates, diffusion sheets, brightness enhancement films (prism sheets), and frames. The backlight modules used in LCD can be mainly divided into two categories: edge-lit backlight modules and direct-lit backlight modules. Mobile phones, laptops, and monitors (15 inches) mainly use edge-lit backlight modules, while LCD TVs mostly use direct-lit backlight module light sources. Cold cathode fluorescent lamps and light-emitting diodes are mainly used as the backlight sources for LCD. 9. Reflector: The reflector, also known as the reflector cover, mainly functions to completely direct the light emitted by the light source into the light guide plate, minimizing useless loss as much as possible. 1. Light guide plate: The main function of the light guide plate is to guide the light emitted from the side light source to the front of the panel. 11. Zero lens: The prism sheet, also known as the brightness enhancement film, mainly functions to concentrate scattered light through refraction and total reflection within the film layer, emitting it from the backlight source at a certain angle, thereby achieving a screen brightening display effect.17. Diffusion sheet: The main function of the diffusion sheet is to correct the edge-lit light from the backlight module into a uniform surface light source to achieve the effect of optical diffusion. Diffusion sheets are divided into upper diffusion sheets and lower diffusion sheets. The upper diffusion sheet is located between the prism sheet and the liquid crystal assembly, closer to the display panel. The lower diffusion sheet is located between the light guide plate and the prism sheet, closer to the backlight source.

wohner electrical component classification

Based on the power supply used for operation, electric motors can be classified into DC motors and AC motors. Among these, AC motors are further divided into single-phase motors and three-phase motors. According to their structure and operating principles, electric motors can be categorized as DC motors, asynchronous motors, and synchronous motors. Synchronous motors can also be subdivided into permanent magnet synchronous motors, reluctance synchronous motors, and hysteresis synchronous motors. Asynchronous motors can be classified into induction motors and AC commutator motors. Induction motors are further divided into three-phase asynchronous motors, split-phase asynchronous motors, and shaded-pole asynchronous motors. AC commutator motors include single-phase series-wound motors, universal motors (AC/DC), and repulsion motors. Based on starting and running methods, motors can be classified as capacitor-start single-phase asynchronous motors, capacitor-run single-phase asynchronous motors, capacitor start-and-run single-phase asynchronous motors, and split-phase single-phase asynchronous motors. Motors can also be categorized by application into drive motors and control motors. Drive motors are further divided into motors for power tools, household appliances, and other general-purpose small mechanical equipment. Control motors include stepper motors and servo motors, among others. Based on rotor structure, motors can be classified as squirrel-cage induction motors and wound-rotor induction motors. Finally, based on operating speed, motors can be categorized as high-speed motors, low-speed motors, constant-speed motors, and variable-speed motors.

wohner electrical component features

It has a self-diagnostic stable operating zone indication function, which can promptly inform whether the working status is reliable; through-beam, reflective, and mirror-reflective photoelectric switches all have anti-interference functions, making installation convenient; setting the control terminal allows pre-checking whether the photoelectric switch works normally before operation. It can also accept interrupt or detection instructions from computers or programmable logic controllers at any time. The appropriate combination of external diagnosis and self-diagnosis can make the photoelectric switch intelligent; fast response speed, capable of detecting tiny objects moving at high speed; adopts specialized integrated circuits and advanced surface mount technology, offering high reliability; small size, light weight, simple installation and debugging, and includes short-circuit protection function.

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