I once read an article about contactless eating LEDs on the cooler blades and decided to make myself the same miracle of nature. In addition, the cooler turns out to be not just glowing, but with an advanced strobe effect. I recommend. So, first we buy a large cooler 120*120, preferably black. We remove the impeller: to do this, you need to remove the lock washer placed on the axle. Save the washer - it will need to be returned to its place later.
Then we wind 50 turns of 0.8 mm thick wire around the cooler and fix its ends. These pins will receive power.
Next, we wind 50 turns of 0.2 mm thick wire around the impeller and coat it with super glue.
Now you can take on a very important procedure - placement LEDs on the blades. It's better to take SMDLEDs, but regular super-bright ones will also work. Distribute 7 pieces among blades LEDs, maintaining the balance of the impeller, and connect them in series. We solder the ends to the winding on the blades.
After this, we make a breaker to power this system. The diagram is attached.Parts are easy to find in stores.
We connect the leads to the power supply and enjoy the stroboscopic effect, which can be changed with a variable resistor.
