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Last Updated on: Wednesday, October 18, 2017 05:04 AM

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Ocean Wave Power Generator Demo Unit

A while back, a Discover Circuits visitor wanted a simply way to demonstrate how electricity could be generated from the up and down movement of ocean waves. The system was to be part of a science fair project, showing different renewable energy sources. 
I gave this some thought and came up with the system shown below. It uses a simple plastic foam float attached to a lever arm, which is connected to the shaft of an inexpensive stepper motor, available from www.jameco.com. The AC voltage output of the stepper motor was connected to a few Schottky diodes to convert the signal to DC.  When properly mounted in a tank of water, the motion of a wave in the tank causes the shaft of the stepper motor to move. That movement produces enough electricity to turn on the visible red LED.

Circuit Circuit ocean wave power generator demo unit

Click on Drawing Below to view PDF version of Schematic

Circuit Circuit Ocean wave power generator demo unit circuit

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