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Registered Member #1130
Joined: Mon Nov 19 2007, 01:12PM
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Posts: 3
Hi, I'm new to this forum, but me and a friend are doing a schools science project. Our chosen topic is wireless transfer of electricity with the help of coupled resonators. We hope this will work like a pizo radio (a battery- less radio), except that it is powerful enough to power a light bulb. The idea is to have a copper coil transmitter which is fed by a AC, the transmitter will then send out an el- magnetic waves, which will be received by a second copper coil (receives like a radio). The copper coils are identical. The idea is that a cap or oscillator will delay the el- magnetic pulse and the send it back towards the first coil. This will hopefully create a resonance and will enhance the strength of the pulse enough to power a light bulb.Our question is will this work? The idea is based upon an article from MIT
Registered Member #1130
Joined: Mon Nov 19 2007, 01:12PM
Location:
Posts: 3
Ok, the project is now finished. We managed to send about 4% of the innput voltage over a distance of 29 cm. This was enough to make a tiny lightbulb work. We also tried using a 1:2 coil settup, and this resulted in a 50% increase of the voltage received. In other work it's extremely ineffective, but still cool. I'l post some pictures later.
Sorry guys, I don't know how old this thread is, but I am interested to do this this summer.
Are there any schematic on the creation of 10Mhz oscillations?
I want to do small scale and just light an LED with 5V.
The link for the old thread just wondering:
1. Should not a test like this use THINK core wire? Also, it should not be insulated right? That seems to skew results. 2. Material used to transmit/receive, Is copper really ok? I saw results, but only decent. 3. MIT talked about this in there paper, that for appropriate meter-range coupling with good dielectric constans and low losses, you need something like: A. Titania B. Barium tetratitanate C. Lithium tantalite How much do you think this effects results?
4. Lastly I wonder about the waveform, why is squared the best (or alteast good) (excuse my ignorance, I am good with math, and all the mathematics that MIT presented makes sense, however I am still learning in )
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Wireless transfer of electricity
