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The reason why the rechargeable led flashlight lamp be broken

First, the problem caused by abnormal power supply:

Check if the power supply is working properly, and the indicator light is not lit. If it is not lit, please check if the power is connected.

Check whether the power cord of the lamp bead is connected to the positive and negative poles of the power supply. Is there any inversion? If any of the above problems exist, please connect them correctly.

Second, the rechargeable led flashlight lamp beads for the voltage requirements:

Nominal 3V rechargeable led flashlight bead, in fact, different colors have different requirements for current, yellow requires minimum current, followed by red, green, white, and blue. If the current is too large, the wick will burn.

Using a 2.4V rechargeable battery, the yellow is easy to burn, because even if the voltage is not large, but the current is too large, it will still burn.

When using the button battery, because the button battery voltage is 3V, but because the button battery discharge current is very small, the 3V rechargeable led flashlight lamp beads will not be burned. Therefore, when using a rechargeable led flashlight bead, you should choose the right power supply, pay attention to the voltage, and current.

When using the power supply, if it does not meet the rated requirements of the rechargeable led flashlight bead, you need to improve the circuit, the common installation resistor!

Third, how to divide the luminous color of the rechargeable led flashlight lamp bead:

In the case of no power, if you want to pick it up at the time of purchase, it is recommended to have a 3V button battery. It is convenient to check the light of the rechargeable led flashlight when selecting it.

Fourth, the reason for the high-power rechargeable led flashlight lamp bead burned:

Two filaments above and below, our industry is called gold wire, pure gold, for conductive use, two positive electrodes, two negative electrodes, a really good product will have a fifth wire, welded on the Zener tube, play a protective role of;

The filament is short and you are very clear to tell you that your lamp has been burned by a large current, which is equivalent to an open circuit;

The driving current of high power 1W is about 350ma, and the working voltage is between 3.2-3.6V. Please pay attention when using it. Excessive current will definitely burn the lamp;

Generally, the aluminum substrates of three 1W lamps are driven by about 12V. Rarely use 220V directly. Do you see if there is one constant current source or one 12V driving power supply?

Fifth, the reason for the rechargeable led flashlight bead yellow:

Rechargeable led flashlight outer sealant yellowing is mostly caused by the mismatch between epoxy resin and curing agent, but it can not be ruled out that the outer sealant baking time is too long.

Solution: Purchase a complete set of outer sealant and curing agent. For example, Shanghai Fine Chemical’s model 800 or 2339 glue will not appear as follows. Pay attention to production control, strictly follow the operation instructions, avoid excessive or insufficient baking time. This situation is very well controlled.

Sixth, the reason for the rechargeable led flashlight lamp bead leakage:

The equipment of the machine is not grounded, and the personnel are not wearing an electrostatic wristband (must be corded). Improper electrostatic protection. Then in the packaging process, the welding line PAD welding bias, and finally the quality problem of the chip itself.

Seven, rechargeable led flashlight lamp beads should be the problem of capacitive and inductive loads:

In fact, neither is, the rechargeable led flashlight bead is a diode, it needs a positive turn-on voltage to work, usually 2-3.5V, in addition, the current size can control the rechargeable led flashlight lamp beads Brightness. That is to say, the rechargeable led flashlight bead only converts electrical energy into light energy.

Eight, the reason for the rechargeable led flashlight lamp pearl light decay:

The iron bracket has poor thermal conductivity.
Yellowing of epoxy resin.
The chip is not in close contact with the bracket.
The chip has a large attenuation.