HAND CRANK GENERATOR: Hand-driven 12V

HAND CRANK GENERATOR: Hand-driven 12V

• Hand crank generator up to 12V DC.
• Has light bulb to show power generation.
• Banana plug terminals.
• Housed in clear tough plastic case.
• Mounted lamp on the end can be used as a flash light.
• Can be utilized with almost any experiment requiring up to 12V DC current.
• Use binding post to connect outside electrical circuit.

(Wikipedia excerpt: ..."...General devices and machines.  A penal treadwheel used at the Coldbath Fields Prison in London, England in 1864 A mechanically powered flashlight. This uses a linear generator and is charged by shaking along its long axis. Treadwheels, also called treadmills, are engines or machines powered by humans. These may resemble a water wheel in appearance, and can be worked either by a human treading paddles set into its circumference (treadmill), or by a human standing inside it (treadwheel).

Some devices use human power. They may directly use mechanical power from muscles, or a generator may convert energy generated by the body into electrical power.

Human-powered equipment primarily consists of electrical appliances which can be powered by electricity generated by human muscle power as an alternative to conventional sources of electricity such as disposable primary batteries and the electrical grid. Such devices contain electric generators or an induction system to recharge their batteries. Separate crank-operated generators are now available to recharge battery-powered portable electronic devices such as mobile phones. Others, such as mechanically powered flashlights, have the generator integrated within the device. Wrist watches can use muscle power to keep their mainsprings wound up.

An alternative to rechargeable batteries for electricity storage is supercapacitors, now being used in some devices such as the mechanically powered flashlight shown here. Devices that store the energy mechanically, rather than electrically, include clockwork radios with a mainspring, which is wound up by a crank and turns a generator to power the radio...")

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