Simple way just with one npn transistor like bc337,1k ohm resistor
and around 30 turns of copper wire 0.15mm on round object to make the transmitter coil.
Receiver coil made just from 30 turns copper wire,on ends of wires
solder the leds,polarity of led dont mater.
How To Make Wireless Energy Transmission Circuits ─ Hacktuber
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