Infrared LED (Light Emitting Diode) beads are a type of optoelectronic component commonly used in devices such as infrared sensors and remote controls. To ensureInfrared LED beadsFor normal operation, we need to use some methods to test its quality. Next, we will understand a commonly used method for measuring the quality of infrared LED chips.

preparation. You need to prepare a digital multimeter, a 9V DC power supply, as well as connecting wires and a resistor.

Step one, connect the testing circuit. Connect the long leg of the infrared LED bead to the positive connection port and the short leg to the negative connection port. Ensure stable connection and no looseness.

Step 2, set up a multimeter. Adjust the multimeter to resistance measurement mode and select a smaller measurement range.

Three steps, connect the circuit. Use connecting wires to connect the infrared LED beads to the testing circuit. Connect the positive pole of the circuit to the positive pole of the infrared LED bulb, and connect the negative pole to the negative pole of the infrared LED bulb. Ensure the connection is correct and error free. Infrared LED beads

Four steps, measure resistance. Measure the resistance of infrared LED beads using a multimeter. Contact the two pins of the infrared LED bulb with the test pen and check the resistance value displayed on the multimeter. The normal resistance value of infrared LED beads should be between tens of ohms and hundreds of ohms.

Five steps, check the brightness. Connect the test circuit with a 9V DC power supply, turn on the power switch, and check if the infrared LED beads can emit infrared light. You can use infrared sensors or infrared cameras to detect the presence of infrared light.

If the resistance value of the infrared LED bead is within the normal range and emits infrared light, it can be determined that it is working properly. If the resistance value is abnormally high or low, or if infrared light cannot be emitted, it can be determined that there may be a problem with the infrared LED beads.

It is important to be cautious during testing to ensure safety. In addition, other specialized instruments such as oscilloscopes can be used to further test the performance of infrared LED chips. If you are unsure how to test, you need to consult a professional or seek more detailed operational guidance.