On May 9, 2009, at 12:45 PM, Kyle Mcallister wrote:
I wonder about the aluminum U channel. One could hide a few AAA's in there, and a small 'kicker' solenoid, and some control circuitry.
All it takes is a bolt (core) wrapped with a small sense coil and a larger energizing coil. You hook the sensor coil to a transistor gate and the the power coil to emitter and battery. As a magnet approaches the bolt it induces a current in the sensor coil and thus through the gate. With correct (feedback reinforcing) coil connections the effect is also motion reinforcing. When the magnet is closest to the bolt, dB/dt is zero, the induction of current through the gate stops, and the power to the bolt stops, permitting the magnet to escape the added attraction of the bolt due to the current. It can also be designed to work in repulsion mode. The nice thing about this set-up is almost no current is drawn unless there is magnet motion to start the process, so no "on" switch is needed. This is also a down side because any motor so designed is not self starting without some other mechanism. It can work with a single AAA battery. This kind of circuit is used in various battery powered spinning top type toys. Such a toy would be a good source of compatible parts to make a fraudulent motor experiment.
On May 10, 2009, at 12:55 AM, Michel Jullian wrote:
All those who believe in psychokinesis, raise my hand.
Has your hand raised yet? 8^) Best regards, Horace Heffner http://www.mtaonline.net/~hheffner/
