The LED patch lamp bead current flows in the electronic components. Some components can be connected at random, while others have positive and negative poles. It must be clear in advance when the connection is made. SMD lamp beads are one of the commonly used light-emitting components for digital products and various electrical appliances. Therefore, it is necessary to learn how to quickly distinguish positive and negative electrodes.

3535 lamp beads

We know that the general LEDs are different from the positive and negative poles by the length of the legs, which is known to all technicians. However, when it comes to patch-type lamp beads with some differences in structure, many people don't know how to make a difference, because there are no long and short legs, and some have no logo on them. 2835 lamp beads In fact, the discs of the patch are not so messy, just let us grasp the correct method, and simply use the simple things.

  To distinguish between the positive and negative poles, we can fully use the multimeter to do it. The specific method is to adjust the multimeter to a special diode measurement file before measuring. Then take the two contact pins of the positive and negative poles of the multimeter to lightly touch the two metal parts of the lamp bead. In this way, it is very simple to distinguish between true and false. Together, this method has another advantage, that is, to distinguish the quality of the patch lamp beads.

  LED lamp bead is one of the commonly used illuminating components for the difference between positive and negative electrodes. In the process of application, the difference must be correct first, and then the device is removed. Only in this way can it be used as the original effect.