> >> How does a twisted pair of wires opened at one end charge a >> capacitor? I have tried that and got nothing. > >It's pretty simple, actually. The twisting provides a series of loops, >the magnet passes the loops, which causes a change in magnetic >flux through the area of each loop, which induces a current, which >flows into the capacitor. That energy is released from the cap as >the magnet passes over the larger coil at the bottom. But it seems that the twisted red and black wires are open on the opposite side of the capacitor. But I=B4m not sure... Pay attention in the beginning of the movie. Regards, Rubens PY2RML -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist