Watch Battery Pulse Motor
This is a homemade electric motor that will run on a 1.5 volt AG3 watch battery. The electronic circuit is a simple 2 transistor design. The 30ga coil is wound on a sewing machine bobbin and has a ferrite core. The coil resistance is 17 ohms. The run time is only a few minutes. The alkaline watch battery has been recharged several times using 3v before making this video. There is an error in the circuit diagram shown. The coil attaches directly to the battery (+) not after the resistor.