How to Distinguish Different Patch LED Positive and Negative Poles?

First, no matter what color is positive and negative is fixed. The positive and negative level of the patch LED: Take a serious look at the front of the patch LED. There is a angle in a square or a rectangle. There is a angle of the angle, and the other side is the negative electrode. The positive and negative poles of LED lamp beads: Take a serious look at the front of the LED lamp beads. At both ends of the LED lamp beads, there is a small angle at the end of the LED lamp bead, and the end of the angle is positive and the other end is the negative electrode. LED straw hat lamps are distinguished by the positive and negative electrodes of LED straw hat: The new LED has not been cut, the long foot is positive, the other end is the negative electrode, each manufacturer will be different. If it is packaged by the patch 2512 Or one of the colors is the negative electrode, the bottom is expressed by the triangle, the big head is positive, the small head is the negative electrode, and the large package is positive and negative. Second, you can also use the multimeter Ohm watch. For dial -style multimeter, adjust to“Om X1”When the diode is glowing, the red watch is connected to the positive end of SMDLED, and the black watch is connected to the negative end of SMDLED. Third, because LED opening limits is about 1.5-1.8V. It is possible that the voltage provided by the digital multimeter cannot start it. So look at the mark. The patch emitting dilate (SMDLED) has a negative pole with green dots and is relatively positive. LED energy -saving light positive and negative pole recognition method: The most commonly used method is the multimeter detection method. When using a multimeter to detect the light -emitting diode, you must use it“R×L0K”files. The pipe pressure of the miserable diode is about 3V, and the universal watch is located in“R×Locke”And when the following resistance is blocked. The battery in the table is only 1.5V. Below the pipe pressure drop. Regardless of the positive and reverse access, the light emitting diode cannot be turned on, and it cannot be detected.“R×1”During the file table, 9V (or 15V) high -pressure batteries are connected, which is higher than the pressure drop, so it can be used to detect the light -emitting diode. During the test, the two tablets are connected to the two leads of the light -emitting diodes. The positive pole is connected) to the positive pole;. Then connect the two tablets and the glow diodes. At this time, it is reverse access. If the acupuncture is turned or not moved, the shining diodes have been damaged whether they turn to the head or reverse. Determine the straw hat LED positive and negative pole: inside the LED, the pins connected to the bracket are negative electrodes, and the pins of small bracket links are the positive pole judgment 5050 patch LED positive pole: the entire 5050 patch LED is square, in the four right corners There is a corner with a small scarce angle, which is the place of the small circle. The other right corners do not have a small angle. The end of the small lack of angle is the negative electrode, and the other end is the positive pole. Zhuhai TIANHUI Optoelectronics Technology Co., Ltd. is the development of LED light -emitting diode series of product development, patch LED production processing, sales and service -oriented private enterprises. Products are widely used around computer, communication products, electronic and electric toys, household appliances and lighting fixtures, automotive electronics, medical equipment and many other production areas.