Some of my LEDs continue to glow faintly when off. I assume the efficiency of the bulbs is converting a small trickle of power into light. Has anyone experienced this? Anything to be done?
Could be a number of reasons but the most common is either its wired to a dimmer or similar which is leaking some current when its "switched off" or its switched on the netural side and the wiring is acting as a capacitor and letting some current flow.
I have an old floor lamp that I converted from halogen to LED. It has a dimmer knob but even when off it didn't turn off the light it was very faint. I thought it was the potentiometer/knob leaking current. I think I also had the issue on a room that also had a dimmer switch, an actual light in the ceiling not a lamp. So it seems to be the dimmer feature that is the issue for me.
For how long? LEDs produce broad-spectrum light using phosphorescence activated by discrete-spectrum light. Those phosphors will glow for a few seconds after you turn them off, or if you're really sensitive you may see a glow-in-the-dark phenomenon. When you unplug a lamp or turn off a true switch, there should be no residual current.
If you are using the bulb itself to adjust the power level, like with some smart bulbs that you are supposed to leave switched on, it's possible that they never turn off the power completely for some reason. LEDs are dimmed using PWM so they may have an off setting that is like 1% of duty cycle or something, who knows.
Yes! This is fairly common. It usually happens when the power leads pick up a small amount of electricity via induction. You can place a compensator near the fixture to take care of it. (Basically a high voltage capacitor)
Can you go into more detail about this compensator? Is this a consumer product you can buy to fix a misbehaving light or a component that the manufacturer needs to include in the bulb?
