Urgent Evoke

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By thinking about something I use every, I notice that I have not so much things I could power on a cheaper way. So I start thinking about my equipment at work and at the university. There I could find something.
I work every day with a laptop for the study or for the work. I think it could be a way to power a laptop by an dynamo. After sitting so much before a laptop it is a nice alternation to power a laptop by using a dynamo. The dynamo must not be used by hand, it could also used with a feet-pedal so that I can work by the way.
If the weather is fine enough, I prefer to sit outdoor to do my work. Additional I could power the laptop by solarenergy. While I am working indoor with the laptop I could use my own little hydropower station. It could work with a pump like a pump to clean the ground of an aquarium. On that way could arise a hydrologic cycle, which driving a water wheel that is connected with a dynamo, to produce energy without using electric-energy for the pump. The produced energy could saved in a storage battery or be used for direct loading. If there is used a storage battery you can also power different equipment like a mobile phone, a flashlight or a radio.

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