PROMAX960W24V40A electrical components Germany PROMAX960W24V40A model PROMAX960W24V40A price

PROMAX960W24V40A electrical component is a common light-emitting device that emits light by releasing energy through the recombination of electrons and holes, and it is widely used in the lighting field. Light-emitting diodes can efficiently convert electrical energy into light energy and have a wide range of applications in modern society, such as lighting, flat panel displays, and medical devices. This electronic component appeared as early as 1962, initially only emitting low-intensity red light. Later, versions emitting other monochromatic lights were developed, with emitted light covering the visible spectrum, infrared, and ultraviolet ranges, and luminous intensity significantly increased. Its applications have expanded from initial uses as indicator lights and display panels; light-emitting diodes are abbreviated as LED. They are made from compounds containing gallium, arsenic, phosphorus, nitrogen, etc. When electrons and holes recombine, they emit visible light, making them suitable for manufacturing light-emitting diodes. They serve as indicator lights in circuits and instruments, or form text and numeric displays. Gallium arsenide diodes emit red light, gallium phosphide diodes emit green light, silicon carbide diodes emit yellow light, and gallium nitride diodes emit blue light. Based on chemical properties, they are divided into organic light-emitting diodes (OLED) and inorganic light-emitting diodes (LED). LED was initially used for indicative lighting in instruments and meters, later expanding to traffic signals, landscape lighting, automotive lighting, and mobile phone keypads and backlights. Later, new technology for micro-light-emitting diodes (micro-LED) was developed, significantly reducing the size of traditional LEDs. Arrays of independently emitting red, blue, and green micro-LEDs form display arrays for display technology applications. Micro-LEDs feature self-emissive display characteristics, offering higher efficiency, longer lifespan, and greater stability against environmental influences compared to self-emissive organic light-emitting diodes.

PROMAX960W24V40A electrical component performance

The main performance indicators of loudspeakers include sensitivity, frequency response, rated power, rated impedance, directivity, and distortion. (1) Rated Power: Loudspeaker power is categorized into nominal power and maximum power. Nominal power, also known as rated power or non-distortion power, refers to the maximum input power allowed within the rated non-distortion range. The power value marked on the loudspeaker's label or technical manual is this rated power. Maximum power refers to the peak power the loudspeaker can withstand momentarily. (2) Rated Impedance: Loudspeaker impedance is generally frequency-dependent. (3) Frequency Response: When audio signals of the same voltage but different frequencies are applied to a loudspeaker, the resulting sound pressure varies. Typically, sound pressure is higher at mid-frequencies and lower at low and high frequencies. The frequency range of high and low tones where the sound pressure drops to a specific value relative to the mid-frequency level is called the loudspeaker's frequency response characteristic. (4) Distortion: Distortion occurs when a loudspeaker fails to accurately reproduce the original sound. There are two types: frequency distortion and nonlinear distortion. Frequency distortion arises when certain frequencies are reproduced more strongly than others, disrupting the original balance of loudness across frequencies and altering the timbre. Nonlinear distortion results from inconsistencies between the vibration of the loudspeaker's mechanical system and the signal fluctuations, introducing new frequency components into the output sound. (5) Directivity Characteristic: This characterizes the distribution of sound pressure radiated by the loudspeaker in various spatial directions. Higher frequencies result in narrower directivity, and larger cones produce stronger directivity.

PROMAX960W24V40A electrical component characteristics

The main characteristics of circuit breakers include: rated voltage; rated current; tripping current setting ranges for overload and short-circuit protection; and rated short-circuit breaking current. The rated ultimate short-circuit breaking capacity refers to the ability of a low-voltage circuit breaker to operate normally again and break the same short-circuit current once more after interrupting the maximum three-phase short-circuit current at its output terminals. However, the circuit breaker does not guarantee normal closing and breaking capabilities thereafter. In contrast, the rated service short-circuit breaking capacity refers to the ability of the circuit breaker to repeatedly and normally break the maximum three-phase short-circuit current occurring at its output terminals. The rated service short-circuit breaking capacity is a lower breaking current value than the rated ultimate short-circuit breaking current. Generally, circuit breakers with three-stage protection functions (long-time delay for overload, short-time delay for short-circuit, and instantaneous trip for short-circuit) can achieve selective protection. Most main lines (including transformer output terminals) use them as main protection switches. Circuit breakers lacking short-time delay for short-circuit protection (having only long-time delay for overload and instantaneous trip for short-circuit) cannot provide selective protection and are suitable only for branch circuits. "Marine Electrical Engineering" points out that for circuit breakers with three-stage protection, emphasis is placed on their service short-circuit breaking capacity value, while for circuit breakers used in branch lines, sufficient ultimate short-circuit breaking capacity must be ensured. A common bias is to prefer larger values over appropriately matched ones, assuming larger is safer. However, excessively large values lead to unnecessary waste. Therefore, there is no need to blindly pursue high service short-circuit breaking capacity indicators for branch circuit breakers. For circuit breakers used on main lines, they must meet not only the rated ultimate short-circuit breaking capacity requirements but also the rated service short-circuit breaking capacity requirements. A circuit breaker is a basic low-voltage electrical appliance with overload, short-circuit, and undervoltage protection functions, capable of protecting lines and power sources. The main technical indicators are rated voltage and rated current. Circuit breakers have different functions, varieties, and specifications depending on the application, with many specific technical indicators. Free tripping of circuit breakers: If the protection action closes the tripping circuit at any moment during the closing process, the circuit breaker can reliably open completely. This is called free tripping. Circuit breakers with free tripping ensure rapid disconnection in case of a short-circuit fault during closing, preventing the expansion of accident scope.

PROMAX960W24V40A electrical component principle

LCD is a display that uses liquid crystal as the material. Liquid crystals are a class of organic compounds intermediate between solid and liquid states. At room temperature, they exhibit both the fluidity of liquids and the optical anisotropy of crystals. When heated, they become a transparent liquid; when cooled, they turn into a crystalline, opaque solid. Under the influence of an electric field, the arrangement of liquid crystal molecules changes, thereby affecting the intensity of incident light passing through the liquid crystal. This change in light intensity is further manifested as variations in brightness due to the action of polarizers. Accordingly, by controlling the electric field applied to the liquid crystal, variations in light and darkness can be achieved, thus enabling information display. Therefore, the function of liquid crystal material is analogous to an array of small "light valves." Since control circuits and driver circuits are present around the liquid crystal material, when electrodes in the LCD generate an electric field, the liquid crystal molecules twist, causing regular refraction of the light passing through them (the optical activity of the liquid crystal material). The light is then filtered by a second polarizer and displayed on the screen. It is worth noting that because liquid crystal material does not emit light itself, LCD displays typically require an additional light source for the display panel. The main lighting system is called the "backlight module," in which the backlight plate consists of fluorescent materials that emit light, primarily providing a uniform backlight source.

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