The shape of the flashing LED lamp bead is no different from that of the general LED lamp bead, but it is composed of an integrated circuit (IC) connected with an LED lamp bead in the tube shell. The integrated circuit is composed of a vibrator, a frequency divider and a buffer driver; The vibrator generates a signal whose vibration frequency is fo. After multi-stage frequency division, a fixed frequency fBL in the range of 1.3 - 5.2Hz can be obtained, and then the current is expanded by the buffer drive circuit to output a large enough current to make the LED The lamp beads flicker.

 Flashing LED lamp beads are widely used in light alarm circuits, holiday lights, various electronic toys, electronic corsages and vehicle turn indicators.

The flickering LED lamp beads should pay attention to the following matters when using:

 1. Flashing LED lamp beads generally use a working voltage of 5V.

 2. The operating voltage of the flashing LED lamp bead should not exceed the specified value of the rated voltage, otherwise the equipment will be easily damaged. The voltage should not be too low, otherwise the light will be darker.

 3. Blinking LED lamp beads identify the positive and negative poles, do not connect them in reverse. Generally, the long leg is the positive electrode, and the short leg is the negative electrode.

 4. The position of the device that flashes the LED should not be close to the heating element.

 5. The welding temperature should not be too high when the flashing LED lamp beads are welded. Generally, a soldering iron with a power of less than 30W can be used for welding. The welding time should not be too long. Generally, the welding time is 3s.

 6. Pay attention to the flashing LED lamp bead equipment. The pins of the tube should not be stressed, the root of the lead should not be bent, and the welding point should be far away from the root of the tube, generally greater than 15mm.