Improved – Simple Wireless Electricity System

More info below –

Over the past couple of years, several people have asked for help in creating a SWES. I decided to look again at the system and perhaps distill it down further.
The aim is to truly be the simplest usable system possible, as an introduction to wireless electricity.
From there, interested people can build on their own results, experiments and experiences.
The result, is SWES 2.

Wider operating voltage range – 0.6V to 3.6V (as tested it didn’t run with a 9V battery)
Simpler transmitter coil – 12 turns, pull a piece out to the side, wind another 12 turns
Simpler receiver coil – 24 turns directly wound
Stronger output – coils are easier to match, hence power throughput is improved

Coil diameter is partly dependent on the gauge of wire used. A thinner gauge means a smaller diameter of coil, larger for a larger diameter.
12, center tap,12 has proven to be a failsafe turns ratio. Your coils will work 🙂

The system presented is intended as an introduction to wireless electricity, for those interested and to be built up from anything they have laying around.
Adding a diode from the battery will reduce current consumption. Adding a 100ohm’s or so resistor to the negetive of the battery will also decrease current used.
For voltages higher than 3.6V (using a suitable transistor), a variable potentiometer in series with the Base will allow tuning and circuit operation.

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