My buddy's older brother did this when I was in high school. I really thought it was just the coolest thing. He used a long insulated copper wire like Dutchdivco describes. As I recall, he was able to charge a car battery in a few days.
Quote:
Originally Posted by Turtle
Other than having just a little bit of juice available, though I agree you could store it in a capacitor to trickle charge a battery...
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This link describes using a spark plug and an ignition coil which sounds brilliant.
The thing building up a charge would be connected to a spark plug, which would discharge each time it builds up enough charge. The other spark plug lead would be connected to the secondary coil of the ignition coil (
the blue part on this diagram). The coil would work as a transformer lowering the voltage and delivering it in pulses to the battery which should charge it.
The positive side of the battery is then connected to the primary coil while the negative side of the battery is grounded. There's then a large capacitor between the negative battery lead and the "antenna".
These parts are all cheap, if not readily available in most people's garage. Who's up for it
~modest
