Simple DCRS Wireless Electricity
Original video: https://www.youtube.com/watch?v=R6UCwqjdpo0
After seeing the KAIST system, I wondered if it could be replicated on a much smaller scale…ideally using just a 1.5V AA battery.
This is my replication, which uses 20mA.
More power throughput can readily be achieved by lowering the Base resistance (7.1K here) or by using a higher voltage input.
The ‘Centurion’ wireless transmitter circuit is my SWES with a tank section 🙂
Interestingly enough, part way through the video the ferrite pieces interacted in a way that might help to ‘relay’ or boost onward transmitted power.
Specs of the transmitter side:
Transistor – MPSA18
Cap – ‘101’ ceramic
Resistor – 7.1K (1x5K, 1×2.2K whose tolerances gave 7.1K total)
Ferrite rod with 17 turns one side, center tap, 18 turns on the other of approx 32AWG.
0-512pF variable capacitor
4x 1N4148 diodes
10uF electrolytic capacitor
Ferrite rod with original factory radio windings in place.
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