Why do light bulbs flicker on and off?

In the movie scene, to create a terrifying atmosphere, it will be found that some light bulbs will appear flickering. If this happens in reality, it is a bit scary, especially at night. So why do light bulbs flicker on and off?

1. Sometimes the bulbs in the home will flicker, and more than one bulb has such a problem. It may be caused by insufficient voltage. The first reaction is that there is a problem with the power supply station. At this time, the bulbs in the home will be affected, and the phenomenon of lightning will appear.

2. It is also possible that the switch or lamp holder of the light bulb, including the lamp head or the wiring point of the wire, has a problem of poor contact. At this time, it will also cause the problem of flickering after turning on the light.

3. Another reason is that the load in the circuit is relatively large, and many high-power electrical appliances are turned on in the home, such as the air conditioner, Yuba, etc., and the power load is relatively large at the same time, which will cause the light bulbs in the home to flicker. , flickering on and off.

4. The last reason is that the filament of the light bulb is about to break, that is, there is a problem with the light bulb, and there will also be a flickering failure.