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2. Freeplay Energy - Wikipedia

   en.wikipedia.org/wiki/Freeplay_Energy

   Freeplay Energy Ltd (AIM: FRE), (formerly BayGen Power Industries, Freeplay Energy Group), is a manufacturer and distributor of portable electrical or electronic products such as radios and lights, generally powered by hand cranked generators that charge rechargeable batteries.

3. History of perpetual motion machines - Wikipedia

   en.wikipedia.org/wiki/History_of_perpetual...

   Leonardo da Vinci made a number of drawings of devices he hoped would make free energy. Leonardo da Vinci was generally against such devices, but drew and examined numerous overbalanced wheels. [3] [4] Mark Anthony Zimara, a 16th-century Italian scholar, proposed a self-blowing windmill. [5] Various scholars in this period investigated the topic.

4. Self-powered dynamic systems - Wikipedia

   en.wikipedia.org/wiki/Self-powered_dynamic_systems

   The concept of "self-powered dynamic systems" in the figure is described as follows. I. Input power (e.g. fuel energy powering a vehicle engine or propulsion system), or input excitation (e.g. vibration excitation to a structure) to the system. The source of this input energy can be of renewable energy source (e.g. solar power to a dynamic ...

5. Perpetual motion - Wikipedia

   en.wikipedia.org/wiki/Perpetual_motion

   Robert Fludd's 1618 "water screw" perpetual motion machine from a 1660 wood engraving.It is widely credited as the first attempt to describe such a device. [note 1] [1] Something for Nothing (1940), a short film featuring Rube Goldberg illustrating the U.S. Patent Office's policy regarding perpetual motion machines (and the power efficiency of gasoline)

6. Electric generator - Wikipedia

   en.wikipedia.org/wiki/Electric_generator

   An engine-generator is the combination of an electrical generator and an engine (prime mover) mounted together to form a single piece of self-contained equipment. The engines used are usually piston engines, but gas turbines can also be used, and there are even hybrid diesel-gas units, called dual-fuel units.

7. The Best Solar-Powered Generators for Both Off-Grid ...

   www.aol.com/best-solar-powered-generators-both...

   Yeti 1500X Solar Generator. Optimized for campers who spend extended periods of time off-grid, this high-powered generator has a 600-watt input, allowing it to fully charge in just a few hours ...