How can I remedy the afterglow of LED lamps?

How can I remedy the afterglow of LED lamps?

We are regularly asked why some LED lights still glow after use and sometimes even flash, while the switch is switched off. And they are also asked how this is possible and how they can be solved.

LED lights

The afterglow of LED lamps

A LED lamp is of course not an incandescent lamp and will therefore not really glow, but sometimes they will continue to burn very gently. Because LED lights only need a little bit of voltage, this can be enough to make them light. It is also possible that the voltage is not enough to make the lamp burn immediately. Then the voltage builds up, as it were, in the electronics, as well as in the lamp itself. If the voltage is high enough, it will discharge itself in the form of a flash, whereby the lamp is switched on for a very short time.

The switch is off, so why does the LED lamp not go out and where does the voltage to light the lamp actually come from?

This is due to a leakage current and it is virtually impossible to prevent it. Many devices have capacitors or transformers, causing - albeit small - leakage current. By switching not only the phase but also the zero, the glowing effect of LED lamps can be prevented by means of leakage current, but then you have to use a two-pole switch. The bipolar switch has the disadvantage that the zero must also be at the switch itself, while with a single-pole switch only the phase is present. Often an extra neutral wire has to be applied from the switch to the light point. But a two-pole switch does not always solve the problem.

Inductive voltage

With long installation wires and with full lines, the phase and neutral wires may generate a small inductive voltage. This is not a defect, nor a problem or wrong connection, it is a characteristic of AC alternating voltage. Even if the phase and the zero are switched off, other current leads that run in the same line can cause induction voltage. If this is the case, the LED lamp can still be lit while the two-pole switch is switched off.

Getting all wires from a pipe or central box that are not intended for a light point is of course not a good solution. But what then?

The company has made the Compensator solve the flashes and the continued lighting of the LED lights that have been switched off. This Compensator will be placed over the lighting in parallel and it consumes the little voltage present to keep the lamps from glowing. You just have to connect the two wires across the plus and minus of the lamp.

The LED light is simply off and the problem is solved. This Compensator can also be used to electronic transformers and dimmers that have no connected zero. Because it is so compact, with a diameter of 22 mm and a length of 25 mm, the Compensator can also be concealed in a flush-mounted box.

The Compensator does not consume any electricity itself, so the costs are zero in use. Only the existing leakage current or inductive voltage is absorbed by it.

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