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Led bulb lights with switch off.
In this case the led continues to glow permanently when the light switch is turned off.
Short of rewiring your lighting one solution is to stick something in the circuit to mop up this unwanted voltage.
Led lights flickering when switched off.
Led light bulbs can be used in light fixtures controlled by dimmer switches but you may well find that traditional dimmers may not work or may work inadequately with some led bulbs.
The afterglow issue is usually only visible after converting from old light bulbs to leds.
In some cases an led lamp may flicker even though the light switch is turned off.
Just make sure that you replace your incandescent bulb with a comparable led that will match the performance of the previous bulb.
To get the benefits of led without replacing all your existing fixtures all you need to do is replace all your incandescent screw in lightbulbs with screw in led bulbs.
The bottom line is compatibility.
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An incorrectly connected light switch or a switch with a night light can be responsible for flickering.
Some fixtures such as under cabinet and recessed lights may need special led dimmer switches for proper performance.
Led bulbs don t have glowing filaments.
The reason for this can usually be found in the electrical wiring.
This may be due to the type of light switch or dimmer or an incorrectly connected switch.
Any leakage currents and induced voltages were simply short circuited by the filaments of the old lamps.
When the dimmer switch goes off and on many times per second the led bulb becomes a flickering strobe light.
So when switching off the led lights then a very small amount of current passing through its internal circuit remains in its forever.
Some led bulbs are designed for use with standard dimmer switches while others are not.
Even an unfavorable cable routing can be responsible for the glow.
Moreover internal leakage in led bulbs is almost zero.