Hello!
Today we will consider one interesting, but simple enough way to transfer electrical energy, namely, we will make a low-power, air transformer!
We will need:
1. Light diode
2. Copper wire (~ 0.2mm)
3. Transistor (2N3904 or KT315)
4. Power Source (Battery or Power Supply)
That's all we need!
By the way, I will use the 2N3904 transistor.
And here is the circuit itself ...
Let's get started! The wire must be wound around a circle with a radius of about 4 cm, it is necessary to wrap around 90 turns, this coil for the LED, just connect the first wire of the coil to the plus, and the second wire to the minus, the polarity is not important here!
Now we wind the main coil, with the same diameter! First we wind 60 turns, and then 30 turns, as shown in the diagram!
Then we solder everything according to the scheme, and that's what happened ...
ATTENTION!!!
In order for the circuit to work, you need to touch a metal object to medium contact, this is if you have a transistor like mine, if you use KT315, then touch the base of the transistor (use the documentation).
Such an interesting contraption turned out, if you experiment with the number of turns and their radius, then most likely you can achieve a greater range, because this option transfers energy by about 10 cm.
I hope you enjoyed it, thanks for watching!
(jake ~).