Electrical – How to make a simple manual gengerator that can produce a 9 volts of electricity

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I have a project from my subject which that project was to create a manual generator that can produce up to 9 volts of electricity. I've been searching some samples that is homemade manual generators, but I've found they are powered only by batteries, and using a dc motor..

Is there any other samples of manual generator which is not powered by batteries or with the help of dc motor or should I say manually operated?
And it can produce electricity up to 9 volts? and also can you give me the materials to be used in creating the generator?

Best Answer

Any generator may be driven by any mechanism - electric motor, gasoline or diesel engine, steam engine, water wheel, or hand crank.

The voltage produces by a generator will depend on its construction, and RPM.