2N2222 good wireless field
The circuit can be found in Lidmotor or jonnydavro’s or, in fact, many other folks videos from around March of 2011. Every day there are tweaks and experiments by the guys from the Energetics Forum ! Power here is 5V at up to 500mA, though uses much less. The cellphone charger is being used to further thoughts on USB wireless energy. I have a red LED to set up the primary coil and that also shows draw amount, 22K start resistor, 2N2222A transistor (a level meter or at least string of LED’s to show power are planned for the near future). Primary is 5 turns of insulated speaker wire (approx 20AWG) Transmitter coil is 450 turns of about 24AWG on a piece of PVC plumbing pipe, topped with a tennis ball covered in aluminium foil. The receiving tower might be of interest…it’s a ‘push pipe’ as I call it. It decreases in wire gauge as it goes. Starting at the bottom are 150 turns of approx 26AWG, then 150 turns of approx 32AWG and finally 150 turns of approx 38AWG. The analogy is of a water pipe when you squeeze the end of it, the water pressure increases.