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ENERGY SAVING DEVICES - WIND UP CHARGERS

V. Ryan 2008 - 2009

 

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A range of energy saving devices now exist such as torches and radios that do not require batteries to be changed. A good example is the torch seen below. It contains rechargeable batteries that can be charged by winding the handle for several minutes. As the handle is turned a small electrical generator produces electricity that is stored in the rechargeable batteries. The electricity can then be used when required.

 

There are several advantages of a torch of this type:

The batteries never need replacing and they can be recharged at anytime.
As the batteries do need replacing - this means that are not thrown away, saving environmental damage.
They work at low energy levels because they rely on LEDs rather than bulbs for light.
Bulbs need replacing occasionally whereas LEDs never need replacing.
Ultra bright LEDs are much brighter than bulbs.
Winding the handle to generate electricity makes the user aware of how our personal energy consumption and the need to save energy and protect the environment.

 
   

An example of an emergency mobile phone used by hikers, sailors or mountaineers is shown below. When out walking/hiking the mobile phone cannot be recharged by plugging into mains electricity. The only option is to use an environmentally friendly charger such as a windup charger. This is especially useful in emergency situations.

   

The wind-up charger simply plugs into the phone using a jack plug or other connector. Winding up the charger provides the phone with enough power so that it can be used as the winding takes place. When the phone is not being used the batteries are charged by turning the handle.

QUESTION:

Apply wind up technology to an everyday electronic device. Draw a design of the device and add explanatory notes.

 
     
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