What are the ways to distinguish the positive and negative poles of LED light-emitting diodes?

light-emitting diodeLED, abbreviated as LED, is a commonly used light emitting device that releases energy through electron hole recombination and emits light. It is widely used in the field of lighting. 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, medical devices, etc. Do you know how to distinguish the positive and negative terminals of LED light-emitting diodes? Below, the editor will tell you.

For ordinary diodes, the section with a white line on the surface of the tube can be observed as the negative electrode.

2. For light-emitting diodes, the positive terminal with longer pins is generally used, while the negative terminal with shorter pins is used.

3. If the pins are cut to the same length, the inside of the tube can be observed. Generally, the smaller metal pole is the positive pole, and the opposite is the negative pole.

4. If the eyes are nearsighted and cannot see clearly, you can also turn on the multimeter and connect the red and black probes to the two pins respectively. If there is a reading, one end of the red probe is positive.

The above is the positive and negative pole identification of LED light-emitting diodes, hoping to be helpful to everyone.