Introduction: Heatsinking Leds by Recycling Old Transformers

hi
in this tutorial i will show you how to recycle old transformers into led cooler
first :why cooling an led ,if you worked with power led before there is something you must know ,unlike normal small led which doesn't produce any heat (warm)
power led (1watt or more) produce's alot of heat if it ran at the maximum power in a previous instructable i made a 1 watt flashlight using 2 AA batteries , the maximum voltage for an led is 4.1 v , (2×1.5=3) so the led ran at a lower voltage ,in this instructable the led will run at 3.7-4.0 v (li-ion)

tip:the cooler the led was the brighter it will be ,lower temperature=longer lifespan
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Step 1: What You'll Need

you will need
1:an old transformer
2:thermal compound
3:electrical tape
4: 4×zip ties
5:power led

Step 2: Dismantling the Transformer

how to dismantle the transformer
1:using a flat head screwdriver or a knife push up the metal peices from the marked areas
2:it will give you 2 shapes an (M) (|)

Step 3: Making the Cooler

how to assemble the cooler
1: stack five or more peices of metal ,and put a dot of thermal compound between then
2:hold them up together with a peice of electrical tape or zip ties (as seen in the picture)

Step 4: Attaching the Led

1:now connect the wires to the led as seen black(-) red(+)
2:push the two led terminals up so they don't shortout when you put them on the metal cooler
3:put some thermal compound on the led and attache it to the cooler as seen

thank you and please like an follow for more awesome projects

Step 5: Another Option

you can also use the other shape to make a heatsink

Comments

author
rimar2000 made it! (author)2015-01-05

1) Copper or aluminium are FAR BETTER than iron to cooling. I insist: FAR BETTER!

2) If you join them with a piece of electrical tape, you are annulling the cooling of that part. Electrical tape acts –in this case– like an overcoat or a shelter.

3) You could better take advantage of cooling, leaving spaces between "wings" of pieces of metal. The air could so flow between them.

author
HAMZAMG1999 made it! (author)HAMZAMG19992015-01-05

thank you for the tips i really appreciate that

author
HAMZAMG1999 made it! (author)HAMZAMG19992015-01-05

(1) i know that copper and aluminum are better but am recycling old transformers so i only got metal
(2)i used electrical tape in this project because i used a 1watt led so it doesn't produce that much of heat and it only covered a small area ,zip ties would have been better
(3)i wanted it to small ,slim and do the job ,fins would have worked better incase of a fan

author
rimar2000 made it! (author)2015-01-05

1) Copper or aluminium are FAR BETTER than iron to cooling. I insist: FAR BETTER!

2) If you join them with a piece of electrical tape, you are annulling the cooling of that part. Electrical tape acts –in this case– like an overcoat or a shelter.

3) You could better take advantage of cooling, leaving spaces between "wings" of pieces of metal. The air could so flow between them.

About This Instructable

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Bio: HAMZA MOHAMED GAMAL ,, Egyptian ,,15yrs ,, twitter:@hamza_elgendy ,,instagram:hamzam.g ,,vine:hamzamg M.G
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