1, this is a running horse lamp chip. 14-pin water lamp IC, is a running horse lamp chip. The power supply mode is DC-12V. Power on work, 11 Led run a circle (from Led1-Led11, the speed is about 10S/After a circle, all leds gradually fade and dim at the same time 3 times (a single flashing time of about 3S), after 3 times of flashing, all leds are fully bright (Led high effective).
2, the common 8-pin is LM358, 14-pin is LM324, you are estimated to be the chip, the chip above the mark is not necessarily the chip model.
3, MAX232 chip is a single power level conversion chip specially designed for the RS-232 standard serial port of the computer, using 5v single power supply. Picture pin introduction: The first part is the charge pump circuit. byIt consists of 6 pins and 4 capacitors. The function is to generate 12v and -12v two power supplies to provide RS-232 serial port level needs. The second part is the data conversion channel.
1, the LED chip can be divided into lamp chip : N/P lamp chip , P/N. According to the light-emitting part, it is divided into surface light-emitting type (most of the light is emitted from the chip surface) and five sidesLuminous type (there are more light chip on the surface and side). If it can be divided into lamp chip : binary, three, four LED chip. The so-called binary, ternary, four-element LED chip refers to the number of effective elements contained in the chip.
2, according to the LED lamp bead luminous color points according to the luminescent tube luminous color points, can be divided into red, orange, green (and subdivided yellow green, standard green and pure green), blue and so on. Others, some light-emitting diodes include two or three kindsThe color of the chip.
3, there are a lot of classification methods, simple can be divided according to the color of the light tube, Tongjia photoelectric can be divided into red, orange, green (and subdivided yellow green, standard green and pure green), blue and so on. Some leds contain chips of two or three colors. According to the light-emitting diode doped or not doped scattering agent, color or colorless, various colors of light-emitting diodes can also be divided into colored transparent, colorless transparent, colored scattering and colorless scattering four types.
4, according to the shape classification, the chip is generally divided into round and square pieces. Among them, the wafer is relatively low grade and the performance is not stable enoughGenerally, LED produced by wafer is not used; Squares are generally measured in size, such as 12 mil (1 mil =0.0254 square mm). In general, the chip of the same brand, the larger the chip size, the higher the brightness.
2, PHILIPS (Philips) 14W energy-saving lamp has two specifications lamp chip , one is 2U1 lamp, balanced arrangement, the other is 3U1 lamp, triangular arrangement, now take 2U1/14W lamp as an example, introduce its circuit principle and common reasonsBarrier repair. For reference. The working principle of the circuit is drawn according to the physical object as shown in the attached drawing, and the number of the components is the same as that of the circuit board.
3, LED is the abbreviation of English light emitting diode (light-emitting diode), is a semiconductor that can convert electrical energy into visible light, it changes the principle of incandescent tungsten filament light and energy-saving lamp three-base powder light, and uses electric field light. Its basic structure is a piece of electroluminescent semiconductor material, placed on a shelf with leads, and then sealed around with epoxy resin to protect the internal coreThe seismic performance of LED is good.
4, LED (light-emitting Diode Chinese meaning light-emitting diode) is a kind of semiconductor that can convert electrical energy into visible Light, it changes the principle of incandescent tungsten filament light and energy-saving lamp three-base powder light, and uses electric field light. According to analysis, the characteristics of LED are very obvious, long life, high light efficiency, no radiation and low power consumption. The spectrum of LED is almost entirely concentrated in the visible band, and its luminous efficiency can exceed 150lm/W (2010).
5, LED (Light EGenerally in 9~12mil, white, blue, green light are generally in 12~14mil, which is the most commonly used chip on the market, if you use a larger chip, although the brightness can be improved a lot, but the chip price is greatly increased, which is why large-size chips are rarely used.
C. Quaternary chip (phosphorus, aluminum, gallium, indium) : SRF, HRF, URF, VY, HY, UY, UYS, UE, HE, UG, etc. Take ternary LED chip for example, it refers to the LED chip mainly containing three elements, such as HY, HO, IR, SR and other products,It is called ternary LED. Its visible brightness is generally lower than the four-element (four elements) LED, and the red chip used in the full-color display is mostly a four-element product, which is characterized by high brightness.
There are many excellent flashlight brands and models on the market, and the best flashlight bead models will vary depending on people's needs, preferences, and specific application situations. However, the following models are often considered to be high-brightness and high-performance flashlight lamp beads: Cree XML Series: Cree is a well-known LED chip manufacturer, and its XML series LED chips are often widely used in strongLight in the flashlight.
High-power chips Taiwan has crystal 35,45, Qili 36,45, Guanghong 338,45, New century, Huaxin Lihua, Taigu, etc., the United States has Purui, the mainland has Di Yuan, Jinko, Huaguang, Hualei, etc., the size is the same.