Homemade 220V generator requires the following:
220V generator (housing, stator core, stator coil, rotor, permanent magnet, bearings, cooling blades, etc. .).
With a generator, you also need equipment to drive the generator: gasoline engine, diesel engine, fan blades, hydraulic turbine, etc.
It is impossible to make your own generator, so it is best to buy a ready-made one.
Disassemble a small DC motor from an old used tape recorder or DVD player, and install a small fan blade on the motor shaft, or buy it directly and make sure that it comes with a sun hat with a small fan, no batteries. Solder a light-emitting diode to the motor terminal, preferably red (catchy and low starting voltage). Use the wind to blow the fan blades to rotate the motor.
1 Motor: Choose the motor used in the tape recorder. If there is a speed regulation hole at the bottom of the motor, it means that there is a speed regulation circuit board inside the motor, and the speed regulation circuit board needs to be removed. I chose the Walkman recorder engine. There is no speed regulation circuit in the motor and it can be used directly.
2 The fan blades come from a toy fan
3. As an electric meter, I used a voltmeter from an old household voltage regulator and I removed the voltage division resistor
4 pieces of wooden board of 15*30 cm and 1 cm thick
Make a support using iron sheets for attach the motor to one end of the wooden board and the voltmeter to the other end
Attach the fan blades to the rotating shaft of the motor
Use two wires tor connect the two poles of the motor and the two ends of the voltmeter. If the voltmeter is reversed, change the connections.
Demonstrate with your mouth When the fan blades blow air, the rotation of the fan blades will generate electricity, which will be indicated by the voltmeter
Of course , you can also replace the fan blades with blades and use water as energy, and it will become a hydroelectric generator model.