How to measure the quality of LED lamp beads? The LED beads produced now are all low voltage and low current. Why is this happening? Due to the environmentally friendly light source characteristics of LED beads, such as LED white light, warm white light, neutral white light, and cold white light, the conventional voltage is 2.8-3.4 volts per bulb. That is, a single one can light up around 3 volts. So, knowing this characteristic of LED beads, we can find a method to measure the quality of LED beads. For example, a method of measuring the quality of LED lamp beads using a multimeter. For example, a, use a multimeter red pen to connect the positive contact of the LED bead, and use a multimeter black pen to connect the negative contact. When the LED bead shows slight brightness, it is good, otherwise it may break. b. Use a digital multimeter to measure the positive and negative poles of LED beads. If you use a pointer multimeter to measure, use a 10K Ω range. When conducting, you can visually see the brightness of the LED beads, which is a good LED bead
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