why are led lamps sometimes noisy (LED bulbs)
in a previous video we looked at how we could dim led lamps by selecting a dimmable lamp
we've got this scenario now gordon where we've got the dimmable lamps but actually
that's really noisy it wasn't an intro it was and i know from experience because i
brought these lamps in from home and they are noisy and if you're in an environment
perhaps you're trying to read or concentrate on something that would become a problem okay
so how are you going to solve that problem then okay what we're going to show in this video that
actually the noise in the lamp is actually a result of the type of dimmer that you're using
all right so we managed to get them to dim but the dimmer itself is creating the noise is that right
yes so let's uh let's just look at our legacy dimmer again gary's just check out that noise
okay so i'm now going to solve that problem by changing to a different dimmer swap over to our
mystery dimmer that we've got in this series but perhaps we'll reveal whose dimmer it is eventually
okay so mystery dimmer going in now and we don't know what's going to happen now so we had a legacy
ones noises that was the one we originally had in our installation change for dimmable led lamps
we've still got dimmable led lamps mystery dimmer let's bring it in switch the lamps on
no okay the noise has gone away now that dimmer is specifically down for
led lamps right but that might not be the case so let's quickly cycle through the other lamps
that we have in the series here and see if we get noise from any of the other designs we have here
this is one we've got from Knightsbridge
this one we got from aurora and you can actually, hear some noise in that lamp
this one from selectric so again no noise
this one we've got hamilton likes that and yeah again super quiet
okay yeah that's quite telling wasn't it and
so how would you know to get the right lamp and right dimmer gordon okay so sometimes the
manufacturers publish charts where they've tested the lamps with certain dimmers it's compatibility
charts you can find on their websites obviously most people probably don't go to the trouble of
doing that before they uh before they go ahead and purchase those lamps you only discover that
when you've actually installed them and actually getting complaints of noise right okay so it might
be a bit of trial and error then so you'll go up your go-to lamp and you probably have your go-to
dimmer because you know that that solved the problem and and the noise has gone away you've
got a noisy difference okay so let's uh well let's repeat the experiments i'll take out these lamps
which one we on still on the mystery dimmer disconnect so we know the next set lamps were
putting in a dimmable dimmable so these ones are uh osram lamps supplied by lead vans okay right so
nothing more than just changing lamps it didn't stay exactly the same we're going to throw the
dimmers again we'll try them again okay so this might just be a simple case of a different lamp
okay so there's two things you can do then you could change your dimmer or you could change your
lamp in order to get rid of the noise yeah all right so where do you want to start well let's
bring in should we start with a legacy dimmer yeah let's go with the legacy one plug that
okay so we're going in here so we're back on this one here the one we looked at in a previous video
i can't hear anything can you no absolutely silent okay so that was the first problem we had our
legacy dimmer and we had those original lamps which you sell were very expensive lamps and we
had some noise so just simply changing the lamps we got rid of that yeah we got rid of the knife so
and then again let's just okay so we're going now for the mystery dimmer mystery dimmer
okay so can we pop that one in yeah there we go so again i can't hear anything sorry what yeah okay
in line so we're going on for knightsbridge now pop that one in there
yeah no i can't hear anything the sound of silence
yeah if only okay now we're on to the aurora one so the aurora so this was
quite noisy not as nice as the legacy dimmer on that sauro lamp that we had in the last one
silent again yeah yeah that's really good so two more to go
so which one do you want now gordon so this electric okay and then just in that one in
yeah yeah sorry no silent again and one final one so this is the hamilton one hamilton
completely silent yeah i agree with that so that's the lamps then
that's the lamps yeah so we managed to get all of these and we've got a vast array of dimmers
here actually to all be silent when we change the action lamps out yeah so the important thing here
is making sure your lamp is compatible with your dimmer so not just for its dimming performance
but is it actually going to make a noise okay so that's we've covered a couple of things there in
two different videos we've covered the ability to dim okay but now we've introduced the noise
and i think you're probably in a position where you're going to have your go-to lamp
and you go to dimmer that over time you're aware of the fact that it won't give you noise
as always at efixx we're interested in your opinions have you got your go-to lamp and
dimmer please leave those below in the comments and we'll try and get back to as many as we can