20-03-2012, 11:27 AM
Generate of Electricity by Garden In and Out Project.
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Many people go to garden to take a fresh air, doing exercise, meet with other friends, for waking, and for many other things, when people go and in from the garden they must open the gate for going outside the garden and inside the garden, so they must move mechanical round type gate, we fit the DC dynamo under the gate, this is a special type of dynamo that take very small push and pull method, very small push and pull the gate this dynamo generate electricity, this electricity have a polarity so we use bridge, they convert - + or + - to required polarity, we use K1 switch to on/off the four led to show that dynamo is work, k1 is also use to charge the battery, if the switch Is position to the battery side, it will charge the battery, if it is position to the led side it will glow the led’s (ULTRA BRIGHT),K2 is used to get the supply from the battery to glow the led’s.
Types of Renewable Resources
Renewable resources are considered natural resources that replenish faster then humans consume them. This means that almost every resource that humans use in the world is considered a renewable resource. It's just that we have to come up with ways that allow those resources to replenish back into the earth naturally faster then we consume them. That is almost impossible with resources like coal, oil, and other resources that take hundreds if not thousands of years to replenish.
Dynamo:-
An electrical generator is a device that converts mechanical energy to electrical energy, generally using electromagnetic induction. The source of mechanical energy may be a reciprocating or turbine steam engine, water falling through a turbine or waterwheel, an internal combustion engine, a wind turbine, a hand crank, or any other source of mechanical energy.
Bridge Rectifier:-
A bridge rectifier makes use of four diodes in a bridge arrangement to achieve full-wave rectification. This is a widely used configuration, both with individual diodes wired as shown and with single component bridges where the diode bridge is wired internally, it is used here to convert any polarity to required polarity.
LEDs (Light Emitting Diodes):-
LEDs are simply diodes that emit light of one form or another. They are used as indicator devices. Example: LED lit equals machine on. The general purpose silicon diode emits excess energy in the form of heat when conducting current. If a different semiconductor material such as gallium, arsenide phosphate is used, the excess energy can be released at a lower wavelength visible to human eye. This is the composition of LED. They come in several sizes and colors. Some even emit Infrared Light which cannot be seen by the human eye.