Wireless Power

Step 3 Putting the Experiment Together

First connect the Multimeter to the capacitor and on 1 side of the multimeter and the Capacitor put the whit side of the diode. Then, connect the other side of the diode(black side) to the Reciever Coil. If you dont use a diode the electricity would flow back into the Reciever Coil. Next, put the Reciever Coil onto the Base Coil.

Then, connect the positive side of the batteries to either side of the Base Coil. Finally, tap the negative side or use a momentary switch so the electricity switches on and off. I tried using a motor but for some reason it doesn't work, if any one knows why comment. If you continue to tap the electricity and make sure everything is connected the voltage on the multimeter should got up. I got .189 within a second.

Also, watch out you can get shocked.

If you have any other problems look at the main picture and comment.

Comments

[DemonSpawn]

THANK YOU SKYLAB!!! thats the best news all day, ive been looking to power my cellphone and all i could find was you need a resonance generator (i think thats what its called) i thought of a 555 but now i can try. do you think i should use a potentiometer instead of the cap that determines the ferequency so that i can "tune" it ? would this (picture) work to convert AC to DC, so that i can charge my phone??

[BoloBit64]

They have variable capacitors you can use to "tune" to different frequencies.
And as far as converting ac to dc just use an old cell phone converter that has a AC to 12v dc converter already built in then cut the wire and connect that to the variable capacitor and inductor(coil thing).

[tech industries]

i understand how you got the power and all, but after you make it, how do you use it to charge your cellphone mp3 etc.? if you could also explain how the receiver coil comes in that would be nice too.

[halo456456]

Well I haven't gotten it to provide sufficient(spelling?) power to charge a cell phone but i have gotten it to power a L.E.D. directly from the power of the coil. But with a different power source you can rectify it and charge a cell phone . The receiver coil is just placed on top of the base coil, I think thats what you were asking for. Try different sizes and shapes for the coils. Lately I have been working on my coil gun so I can't help that much on this project.

[Elipsit]

So you put 54VDC into the primary coil of your Primary coil and you got 1.5VAC out of your secondary coil?

[puffyfluff]

It's basically a Tesla coil. If you could hook the receiver coil up to the battery on the device, the base coil would generate a magnetic field which powers the receiver coil. Electricity would be wirelessly transferring between the coils.

[fd18]

The motor that you tried to use probably isn't working because of the efficiency of the coils. If you're only receiving .189 vdc from that large of a coil there must be something wrong. With that inefficiency your coils cannot draw enough current to overcome the motors temporary static friction and power the motor. Also the inefficiency in my opinion has a lot to do with the batteries. The batteries you used have voltage but not a lot of actual power (current available to draw). The coil is so large and draws so much current that you should be using large 6vdc batteries or a transformer from a wall outlet which for your purposes will be basically unlimited in terms of current. Out of curiosity I wonder if the magnets on the batteries have anything to do with the electron flow or something???? I don't know about a lot about this hole wireless power/ induction so I had some questions. The receiver coil is hollow right, no iron core? How do you wire the capacitor and diode to filter the resulting electricity (parallel, series etc. do you have a schematic)? Thanks, jt

[bretma]

The closer together the two coil are, the better the transfer of power. The secondary of all transformers are isolated from the primary, but must be closer together to see more efficiency in the magnetic fields. If you can place one coil inside of the other (see the toothbrush, the base has a pole that sticks into the bottom of the brush itself. The nub has one coil in it, and gets located inside of the coil that is the outside of hte brush base). As far as not powering the small DC motor...All motors suffer from a large requirement to get the motor turning. ITs called locked rotor, and the current draw can be quite large compared to the actual running current. In effect, you are placing too much of a drain on the secondary coil (if you even got the voltage high enough). You might try spinning the shaft of the motor by hand after you get your coil powered up. You might see the motor stay on at that stage assuming you meet the min. requirements for turning the motor over. Hope this helps.

[wombat_ger]

You need an alternating magnetic field to transfer the energy. So the supply-voltage needs to alternate too!

[skylab]

Actually, you don't really need AC--you could use a 555 timer and a switching transistir to build a pulse width modulator circuit. The resulting square-waves transitioning between 0 and some positive voltage (say, 5?) would be sufficient to make this work. Remember, EMF is transmitted through two un-connected coils via the the voltage cascading to zero in the primary coil, which generates a magnetic pulse in the secondary coil, which collapses, generating a voltage pulse in the secondary coil. throw in some diodes to isolate the load from the secondary coil, maybe a moderate electrolytic capacitor to smooth things out...and ta-da! Making the coil sizes resonant to the out put frequency of the 555 timer would increase the efficiency, while increasing the frequency of the 555 output wave would increase current availability for larger electrical loads, up to the capacity of the transistor. So, the square wave would emulate the AC. This is how those splashwave devices work.

[tech industries]

addition: nice experiment!

[cookn]

the reason the motor doesn't work is because it itself is a coil that probably has more resistance than the coil that you made and the only way to get it to power a motor would be to get some diodes and some other components so that the coil wouldn't recognize the motor as being a motor it would think that it is just a normal little led or something along those lines. if you have any questions e-mail me at [e-mail]