1. Questions for the abnormal power supply for LED direct lamp beads

LED direct lamp bead

① Check whether the power supply of the power supply has normal operations, and whether the demonstration lights are on. If it is not turned on, please check if the power supply is connected;

② Check whether the power cord of the lamp beads is the same as the positive and negative pole of the power supply supply. Is there any reverse? If there are above questions, please be able to connect accurately.

2. Directly inserted LED lamp beads about voltage requests

LED lamp beads named 3V, in fact, different colors also have different requests for currents. The request current is small, and it is red, green, white and blue. If the current is too large, the core will be burnt. Use a 2.4V rechargeable battery to burn coke. Because even if the voltage is not large, the current is too large, it will still be burnt at will. At the time of using a buckle battery, although the voltage of the button battery is 3V, because the discharge current of the buttock battery is small, the 3V LED lamp beads will not be burned.

Therefore, when using LED lamp beads, you should choose a suitable power supply, pay attention to voltage, and current. When the power supply is selected, if it does not fit the additional requests of the LED lamp beads, the demand will improve the circuit, and the common installation resistance.

3. How to divide the braids and insert the luminous color of the LED lamp beads

In the case of unreasonable power, if in order to choose convenient to choose during procurement, you advocate a 3V buckle battery, and use the battery to easily check what light the LED is used when choosing.