Posted by Bogdan Mircea
For those of you who want to get some green energy out of your old devices, here you can learn, how to build a wind generator using some components of your old scanner device.
At step 1 we are discussing the needed components.
- an old scanner,
- capacity of 1000uF,
- rectifier diodes,
- a voltage regulator that goes for 5 volts, type LM7805,
- for the blades, we can use a PVC pipe,
- for the tail we use a plastic square,
- and some aluminium pieces are recommended as well, or some other material
Step 2 is recycling the scanner parts. Open up the scanner case and search for the stepper motor, this is real important for the project. Also you can use some electronic pieces and the fluorescent tube from your old scanning device.
Step 3 is about designing and building the rectifier circuit. The voltage generated by the stepper motor is alternate, so you have to rectify it. You can rectify the phases, by using 8 diodes, 2 for each phase. After that we move on to stabilizing the output, and we use a 1000uF capacity, and a voltage regulator that works for 5 volts. You can use an LM7805 type regulator. Connectors should also be added, so you can charge your different gadgets. Put on an USB connector as well, if you have USB driven chargers for your devices.
The stepper can generate more than 5 volts, but this is the amount of energy we need for our wind generator. For connecting an USB port to your device, you must use some specific orders. For those who are connecting an USB2 port, there are 15KOhm resistances that should be added, so the device will work properly. Also you can use QUCS software for software simulation, to test the circuits.
Step 4 is about building and setting up the blades for the wind generator device. You can use an on-line instructable to build such a device.
Step 5 is actually working on the structure and building it. You can use some pre-made plans, but also you can come up with your own plan while you are building this device, so be creative.
The last step, step number 6 is testing the device, on how it works. First of all you need wind, to run the paddles, so a little patience might help. Test the wind power in your area, so you can adjust the used circuits, the blades and the structure to work properly with the wind power you are getting.
Now you have just made yourself a wind power generator using some of your old components from a scanner. Try it out, how it works with your mp3 player or with your phone charger.