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| How to light the LED lamp beads |
| Time:2022-10-10 00:00:00 | view： |
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Hello everyone, I am Xiaobian Qinmeng. Today, let ’s introduce how the LED lamp beads are on how to light the LED lamp beads. The following is the summary of Qinmeng on this issue and related issues. Let’ s take a look. Catalog of the article:How to light up the 12 LED lamp beads 2. How to light up the LED small lamp beads 3, how to light up the LED lamp beads 4. How to light this LED lamp beads 5, how to repair the LED sewing seam Make the lamp bead brighten How to light up the 12 LED lamp beads Lit the LED. Generally, there are two methods. One is to drive a constant voltage power supply, and the other is to use the constant current source to drive. Lighting 12 LEDs can be used by these two methods, and the following is introduced separately.1. The method of using the heights source driver 12 LEDs Constant pressure source drive LED is relatively simple. This method is often used in the scene where LED lamp beads are less, such as power indicators on the circuit board, controlled by single -chip microcomputer control LED lights, etc. This method needs to be connected to the power supply directly into the power supply in the circuit, otherwise it is easy to burn the LED. The size of the current limit resistance needs to be calculated. Due to the different LED voltage drops of different colors, the resistance value of the current limit resistance is different. Assuming that the power supply voltage is u, the LED voltage drops to U1, and the working current flows through the LED is i, then the current limit resistance R \u003d (U-U1)/i. When calculating, you must consider the voltage drop of LED.ingestion source drives 12 LED circuit schematic diagrams as shown below.2. Hengli source driver LED constant current source is often used to drive multiple LEDs, which is more commonly used in the LED lighting industry. The current output of the LED drive is constant, flowing through the series of LEDs, and its typical circuit schematic diagram is shown in the figure below. All LEDs are connected together. As long as one LED is damaged, all LEDs will not be lit, so you can consider giving each LED in reverse and parallel a stabilization diode. It should be noted that the steady pressure should be stabilized. The voltage value of the diode is far greater than the voltage drop of LED, preventing the stabilization diode work to reduce the brightness of the LED. The above is the answer to this question. Thank you for comments, comments, and reposting. For more exciting content, please pay attention to this editor: how to light up the embeddedLED small lamp beads Single LED lamp bead generally voltage at about 3-3.5V, if you want to light up a LED light, you can give it to you The two ends of its two -3.2V voltage can be added.LED lamp beads are lit Directly use the voltage source to light up the LED lamp beads. The principle is relatively simple. There are three wiring methods of tandem and parallel, and combined with the connection. efficiency. For example, the positive orientation voltage of LEDs is VZ and the power supply voltage is VCC. When N*VZ \u003cVCC \u003c(N+1)*VZ is available, N LED lamp beads should be connected in series, so the utilization rate of the power supply should be the highest. LED lighting lamps with good quality and high reliability are generally driven by constant current source. The LED is a current device. It is driven by constant current source. The brightness of the LED lamp beads is uniform and the light color effect is better. At the same time, the power of the Hengli source is used, the power of the LED is more stable, the current fluctuation rate is small, and the life of LED lamp beads is longer. How to light up this LED lamp bead to 3.4 to 3.4 volt DC power can work normally. In order to ensure that the lamp beads will not over -burn the tax number, use the constant current circuit to power. Generally , 3W1000mA, adding heat sinks to ensure that the lamp beads will not be overheated. LED seam how to make the lamp bead brighter Now that the underlying beads are basically aluminum substrates to dissipate heat, using a windproof lighter to burn below, and the original bad lamp beads will be removed soon, and then you can buy it. The same type of lamp beads, or other bad lamps at home, see if the size of the lamp is the same. If the same way, you can remove the good lamp beads and replace it in the same way. This method is still more durable. The above is the answer to how the LED lamp beads are on how to light the LED little lamp beads and related questions. I hope it will be useful to you [responsible editor: Qinmeng] |
