Bulbs lit with the switch off? Here the reasons
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One of the star questions that our clients send us about The LED products of the catalog are: Why the bulbs They remain on if I have the switch off? The explanation is very simple and is based on a concept on which it will turn This publication. This concept is called "Current or residual light" . This phenomenon causes that in some cases the LED products are strongly illuminated by what This remnant of light is more annoying when we have the lights off. Many customers believe that this phenomenon is due to a product failure, but nothing is further from the truth, since the residual current depends on other factors that we will explain now and the recommendations To end this problem
1 Switches with indicator light or presence
This type of switch is very common in areas where visibility It is usually very poor, such as garages and corridors. This switch provides us with a point of light as Guide to light the rest of the global lighting. This beacon (which is usually red, orange or green) is connected internally to the switch bridging it so that this little LED Receive a current amount to work. This small power step that activates the LED of the switch is the one that in turn causes the bulbs commanded by that switch to remain lit But why? With the old incandescent bulbs this does not happen? The explanation is Very simple. The waste current has always been there. But it was not enough to generate an amount of lighting since the old bulbs were of greater vata and need a Minimum amount that this residual current cannot cover. We can say that it is an effect that He has always been there. But we didn't realize. On the other hand, LED bulbs being so sensitive (and especially low consumption) with a minimum current are already able to generate an amount of lighting. And what is the solution? We can say that there are two types of solutions, one of them more radical than the other. The first consists simply and plainly in change the switch of this type and change it to a normal one (without indicator). It may seem that It is cut to the bottom and the most radical but is the one that is most used for practical purposes. He main problem if we opt for this solution is that we no longer have a visual guide that can be essential in some aspects. If this indicator is essential and you cannot Cancel, we will have to choose this second option. To opt for this solution, it is also mandatory to have a series of concepts on electricity. Basically consists of placing A parallel resistance. Another valid alternative is Place a 0.47 UF capacitor (It is an approximate value) to avoid this problem.
2 Flashing with off switch
Another cause, and that is usually quite common, are the switches in the areas where they are used very regularly. The constant use of the switches (or that these They have been installed for a long time) can make contacts wear and not close the 100%flow flow, let that small amount of residual current that will cause. . That LED lamps remain pone on. In these cases, the solution is to remove the switch and clean it of small impurities that you can have or replace it with a new one. Another use very frequent is to place the LED strips around the perimeter of the bathroom or in the lower perimeter of the bath furniture. In this way we have a indirect light source that we can use when the tasks we want to perform do not depend on An intense light source. To do this, both can be used 12/24 VCC strips as 220 Vca strips. Our professional recommendation is to use the first Because working at low voltage we avoid possible serious incidents.
3 Badly installed switch
Sometimes many of those who consider "little hands" make their own facilities, wiring, etc. The main task of the switches is Cut the phase so that the current does not enter the luminaires and do it does not turn on. Yes connection is not done correctly, that small residual current can escape that makes it Light the LED lamps. On other occasions for a bad connection we get the wrong cable and What we cut is the neutral (return) instead of the phase. This means that when we cut the Switch, the bulbs continue to receive a current that makes them remain on.
4 Return the current through neutral
This is probably the least common case of all we have discussed in this publication. It is possible that some of the electrical and electronic devices that we have in our home or workplace, produce a series of return currents that They will circulate through the neutral (blue cable) and enter the light bulbs and luminaries, making it They are partially lit. There is a small alternative consisting of Invest the Connection of phase and neutral cables so that this residual current is not & ldquo; introduced & rdquo; In LED bulbs. It should be noted that this is the case, it is better Treat it with a specialist so you can determine the origin and solve it.