- An iPOD through a 12V Car cigarette lighter adapter like this one.
- Cell phone chargers
- Portable DVD player
You can use off the shelf parts from local stores to make this 296 Watt pedal power bicycle generator or buy parts from Amazon.com
Through volunteer efforts, 24 of these pedal power bicycle generators were assembled and used for charging cell phones at a 3 day event with 60,000 people attending a day. More Info here.
Any one who can use a drill, socket wrench, hack saw, wire cutters, and crimpers can do this project.
Step 1: How It Works
This test data shows Volts, Watts, Amps, Rear tire RPMs, and Heart Rate. The time period was about 3 minutes.
Note that the green line is actual wattage from the bicycle generator. When you first spin up the bike to about 275 revolutions per minute, about 5 seconds goes by while the alternator is developing a magnetic field, then the internal 14.8 Volt DC regulator kicks in and charges a 2 Farad capacitor.
This is the reason for the big green spike right at the beginning of the chart. After 2 seconds the capacitor is charged, and about 10 Watts of power is being consumed by an AC inverter which converts the 14.8 Volts DC to 110 Volts AC (The same stuff that comes out of your wall socket in your home).
Also note the red line showing that the voltage is stable at 14.8 Volts DC because the built in regulator is doing its job.
Next you will see where we turn on the Sony Play Station and the green line jumps up to 30 Watts.