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LED fairy lights
Smego:
--- Quote from: Magical Tanglefoot Pow! Pow! on December 16, 2009, 16:16:00 ---they can indeed get hot if over driven just like any other electrical component.
--- End quote ---
but not the ones sold as LED fairy lights...... ](*,)
Saffy:
--- Quote from: Smego on December 17, 2009, 16:57:22 ---
--- Quote from: Magical Tanglefoot Pow! Pow! on December 16, 2009, 16:16:00 ---they can indeed get hot if over driven just like any other electrical component.
--- End quote ---
but not the ones sold as LED fairy lights...... ](*,)
--- End quote ---
maybe you misunderstand what is meant by "over driven".... clue...its nothing to do with how long they been on for. ](*,)
cheers
Smego:
I have a degree in electronic engineering...
the designers of LED fairy lights are hardly likely to power the diodes to a level to get them hot, which would be likely to make them fail (safely) anyway.
Saffy:
--- Quote from: Smego on December 23, 2009, 12:05:18 ---I have a degree in electronic engineering...
the designers of LED fairy lights are hardly likely to power the diodes to a level to get them hot, which would be likely to make them fail (safely) anyway.
--- End quote ---
What you say is quite so for the out of box design (usually*) and if somone said "I am putting these LED fairy lights bought from tesco on my tinsel-tree will they get hot" then I wouldn't have had much concern. But as the application here is being used in maybe an innovative way my comment is a valid concern if there happens to be future non-standard ideas brewing about modifying further then just shoving them into a tube as them come. Maybe too many to fit into the tube so a small adjust is made with snips :), maybe someone reading thread get idea their Crimbo fairylight LED would look cool inside their truck so cut the 12volt adapter off and attach to vehicle supply - works great until the engine is started and voltage rises ~3 volts, that's enough to burn little fingers before LED fails (probably not good for eyes either!). I didn't want to take things for granted to make comment 'LED do not get hot, so don't worry" - rather prefer to add some doubt so someone would proceed with an element of caution which is always a healthy frame of mind when working with anything electrical do you not agree?
*There are always an abundance of cheap market stall fairylamps with dubious safety certification, I had a set of 'white' LED last year which got so hot and bright that most of them went nova within about an hour, the rest of them I salvaged to make interior cluster lamps for the truck. In that case the wall wart was almost double spec voltage.
muddyjames:
dont fear my friends. I wont be chopping any fairy lights to make them shorter or turn them into a 24v set for my lorry! :D I am just not sure if my cunningness needs or can have a patent on them. I am worried as everyone who has seen my idea has said wow cool can they have one. I am also worried that it is dead easy to copy and some company with alot more money than me could produce them faster than me and my idea wont even get taken off the ground by me and some company will take over the idea and make a possible fortune.
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