Electric generators are devices that use alternating magnetic fields to create a current through a wire circuit. While full scale models can be complex and expensive to build, you can create a simple electric generator easily using a single neodymium magnet sphere, a coil iron -less form a syncronous motor (230 V) - inside A4 laminators, microwawes turntables motor, a small Dc motor 3 V - 5V - inside electric toys, a screw pot metal case and a Li - Po Battery. This even works well to teach electromagnetic properties, or display as a science project.

Adding a rectifier ( Ac to DC ) - Dc output voltage ( optional )

Tested led bulbs 230 V 3 W - 9 W all our tests http://sciencetoolbar.com

https://www.youtube.com/watch?v=QXUk2R--R70

1. 3V Dc motor -- inside toys which using two batteries 1.5 V AA

2. coil without core inside syncronous motor 230 V -- A4 laminators, microwave turntable motor - remove the core inside the motor

3. neodymium magnet sphere 13 mm

4. neodymium screw pot metal case 13 mm -- remove neodymium magnet from the metal case -- simple generator component

5. plastic connector used to fix screw pot metal case -- dc motor ax inside car toys -- heat the crew pot metal case to fix the plastic connector -- simple generator component plastic connector used to fix the screw por metal case to dc motor ax

6. plastic and metal components from mechanical construction kit -- used to build the holder for dc motor and coil -- simple generator holder construction kit

7. 3.7 V battery 600 mAh - minidrone or a related battery 3,7 V rechargeable battery

8. 230 V - led bulbs 230 V E 27 3 W - 9 W

9. power switch + wires

Improving the efficency of the small prototype layout :

Instead Li - Po Battery - mini solar panels

eliminate the DC motor, using an additional a coil ironless, a reed switch placed near the additional coil and a neodymium sphere ( a pulse motor ) .

https://www.youtube.com/watch?v=sq4QKS-DQMY

Related projects :

Fidget spinner Ac generator

https://www.youtube.com/watch?v=Qc1fk5bMAV4

1. coil without core - inside a syncronous motor 230 V ( A4 laminators and mirowaves turntable motor) - the one used to build the small Ac generator presented

2. led

3. fidget spinner with iron insertions

4. 3 neodymium disc magnets

https://www.youtube.com/watch?v=3XoTag1Kwjw