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  2. Mechanically powered flashlight - Wikipedia

    en.wikipedia.org/wiki/Mechanically_powered...

    Another common type is the windup or crank-powered flashlight, with the light powered by a battery which is recharged by a generator turned by a hand crank on the flashlight. One minute of cranking typically provides about 30 to 60 minutes of light.

  3. Telephone magneto - Wikipedia

    en.wikipedia.org/wiki/Telephone_magneto

    A telephone magneto is a hand-cranked electrical generator that uses permanent magnets to produce alternating current from a rotating armature. In early telegraphy , magnetos were used to power instruments, while in telephony they were used to generate electrical current to drive electromechanical ringers in telephone sets and activate signals ...

  4. Magneto - Wikipedia

    en.wikipedia.org/wiki/Magneto

    Swedish telephone (ca. 1896) with the hand crank of the magneto on the right side. Manual telephones for local battery station service in magneto exchanges were equipped with a hand-cranked magneto generator to produce an alternating voltage to alert the central office operator, or to ring the bells of other telephones on the same (party) line.

  5. Human power - Wikipedia

    en.wikipedia.org/wiki/Human_power

    In the most common arrangement, an internal electric generator is run by a mainspring, which is wound by a hand crank on the case. Turning the crank winds the spring and a full winding will allow several hours of operation. Alternatively, the generator can charge an internal battery.

  6. Electric generator - Wikipedia

    en.wikipedia.org/wiki/Electric_generator

    In addition to electricity- and motion-based designs, photovoltaic and fuel cell powered generators use solar power and hydrogen-based fuels, respectively, to generate electrical output. The reverse conversion of electrical energy into mechanical energy is done by an electric motor , and motors and generators are very similar.

  7. 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.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Hippolyte Pixii - Wikipedia

    en.wikipedia.org/wiki/Hippolyte_Pixii

    In 1832 he built an early form of alternating current electrical generator, based on the principle of electromagnetic induction discovered by Michael Faraday. [1] Pixii's device was a spinning magnet, operated by a hand crank, where the north and south poles passed over a coil with an iron core, and thus classified as a magneto. A current pulse ...

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