## Homemade electricity generator for low speeds

Why build a generator yourself when everything can be bought somewhere?

- The only thing I learn from buying is spending money
- I was unable to find a generator that could generate significant voltage and current at low revolutions of approx. 100 * min-1
- The generator should be used in a Stirling engine and possibly in a vertically running wind turbine, which does not bring the highest speeds
- The generator must also be usable as a motor in order to start a Stirling engine
- The generator has to run very lightly in order to keep losses low, i.e. no sliding contacts and no jerking, as with a bicycle dynamo
- For use in the Stirling engine, the generator should also represent the flywheel mass, which means that it must have a certain torque
- The test generator has to withstand my sons’ attempts to play :-)
- The construction must be simple and it must be possible to assemble it without complex special tools

In the following I log a little what I tried to get as close as possible to the goal, which at first glance seems unrealistic. (Neukirchen in April 2009)

experiment |
Power in watts |
rotation speed |

Wooden Generator 1 exp. 2 | 0,0085 | fast |

Wooden Generator 1 exp. 3 | 0,231 | fast |

Kreissägeblatt Generator Exp. 1 | 1,6 | rpm |