Occasionally one set flickers more than the other.Ī bad connection anywhere along the path is out of the question. In one of the rooms, I have two sets of lights on two different switches, on a single circuit. The flicker sometimes stops if I replace one of the lights on the switch with an incandescent bulb. There are 4 brands in total: Torchstar, Feit Electric, Hyperikon, Philips.Įach of the three rooms uses a different kind of switch: Lutron dimmer (DV-600P), Lutron dimmer (DVW-600PH), and a dumb switch. (They don't flicker in other rooms/circuits.) In each of the rooms, the light bulbs are of a different brand. This only affects LED bulbs because others like halogens and incandescent maintain enough heat to cover brief gaps in voltage. If this voltage is not constant, flickering will happen. The black box contains a light to voltage converter and its output waveform is shown on an oscilloscope. Flickering Cause: LEDs only provide light when an electrical voltage runs through them. There are three different rooms/circuits where the LED lights flicker. Figure 2 shows a T8 LED lamp flicker measurement. The flicker frequency also varies from time to time. The lights flicker at different "flicker frequencies" as you can see in the videos. 41 electronic LED drivers, lighting health, lamp design, and LEDs together to 42 discuss health effects of flicker in LED lighting. I would say the lights flicker about 30-40% of the time. A common complaint is LED downlight flickering. In other cases, we encounter strobing or blinking related to transformers or the dimming of LEDs. Sometimes flickering is caused by low quality LED lights. There are many potential causes of flickering lights. Each time the flicker period is prolonged. Flickering LED Lights - Main Causes & Best Solutions. The lights flicker sometimes and not at other times. Something is causing some of my LED lights to flicker in three locations.