[Feliks]

Originally Posted by roundel

There are automatic electric quartz regulated wrist watches. Seiko and Ventura are two makers. The rotor motion is geared up to spin a generator at thousands of rpms. The generator creates a charge that is stored in a capacitor. The problem is the power consumption of a watch is teeny compared to a mobile phone because the main draw is simply to make a quartz crystal ocillate and send an impuls to a stepper motor.

Your diagram of an automatic rotor winding a mainspring is not really applicable to generating electricity.

http://www.uncells.com/

http://www.uncells.com/]

Regards Andrew