Make a Dynamo Easily

Ever wanted to make your own dynamo like in those wind-up flashlights? This will tell you the two easiest ways!

Steps

Find a small hobby motor, those ones with some sort of wheel on the shaft.
Mount the motor on like a board or block of wood.
Find another bigger wheel and mount it on a pin or something on the same block of wood.
Put a handle on the bigger wheel.
Then get a rubber band and put it around the two wheels and start turning the handle.
You can put a voltage regulator on the positive wire to stop from overloading whatever you are powering, about $1.

Get a roll of 26-28 gauge magnet wire at Radio Shack for $7.95(Rs56).
Wrap a {{safesubst:#invoke:convert|convert}} length of wire around like a tub of margarine remembering to keep it as tight as possible at least 100 turns.
Then find a bar magnet about 1 - 1 1/2 inches long.
Drill a 7/16ths hole in the very middle of the magnet and put a {{safesubst:#invoke:convert|convert}} long upholstery needle through and glue it in place.
Mount the coil of wire on something keeping the middle open.
Put the magnet thing in the middle and start turning it.
The loose ends of the coil are your positive and negative contacts, use a voltmeter to find out.

The thinner the wire in method two, the more electricity is produced but you will need to use at least {{safesubst:#invoke:convert|convert}}. 33 gauge is the best but its hard to find.

If you do not use a voltage regulator on these, you can overload the circuit you are powering and ruin it. That's when it starts smelling like ozone and the mysterious blue smoke starts pouring out. These can put out in excess of 40+VDC if used right.