From old laptops, portable phones and all sorts of portable machines.
Don't throw them away !!!!!!!!!!!!!!!!!!!!!!!!!
Look for the 12volt and 9 volt adaptors.
We can use these as power adaptors with 12 volt led light strips.
Step 1: What do we need ?
One or more led strips 12 volt.
Something to connect these.
Step 2: The adaptor
Because we use led strips that need 12 volt, these will give a little less light with a 9 volt adaptor.
Even less with a 6 volt adaptor.
When you look at the data of the adaptor on the picture,
we see that the output is 9 volt 500 mA.
How do you calculate the adaptors maximum power :
9volt x 500mA = 9volt x 0,500 A = 4,5 Watt
Step 3: The led strip
just look for led strips 12 volt that you can connect easily.
With a wire at the end or as the one on the picture with two little metal pins at the end.
Remember the adaptors maximum power 4,5 Watt (500mA x 9V)
This particular led strip ( 0, 54Watt ) can be coupled, this means we can use no more than 8 strips coupled with this adaptor.
8 x 0,54 = 4,32 Watt
(To calculate this correctly we should use the resistance-value but this is more simple and safe too)
Step 4: Connecting
Or with simple wire connectors, you can buy online, or in a shop. They cost less then a dollar for 10 pcs.
The one I used is a more advanced model, that fits the adaptors pin.
It is priced about 4 dollar. But I use these for other experiments too.