Renewable Energy Is The Answer

Here you can read how to make a simple charger or adapter for charging 6 volt rechargeable battery. This charger works with a bridge rectifier circuit and a step down transformer. You can use this device as a AC adapter or charger for batteries. By selecting proper transformers and rectifier circuit it is possible to change the output of the charger. Thus you can design a charger circuit according to your purpose. What is a Step Down Transformer? Transformer is a device used to step up or step down the input voltage. A step down transformer reduces the input voltage and provide a lower voltage at output. A transformer works on the principle of mutual induction. What is a Rectifier Circuit? The output of a step down transformer is an AC voltage. But we need DC of the same voltage. A rectifier circuit is used to convert the AC voltage to DC. There are three main types of rectifier circuits. 1. Half wave rectifier 2. Full wave rectifier 3. Bridge rectifies We are going to make battery cha...

Experts say wind energy can't be world's largest renewable energy source. They point out that there would be a saturation point (do'nt scare, its far away) above which wind power farms cannot harness wind energy. Even though wind energy can be a promising renewable energy source for future. They you must be aware about advantages and disadvantages (pros and cons) of wind energy. This article is written for you.  Advantages of Wind Energy Wind energy is Efficient Newer technologies are making the extraction of wind energy much more efficient. Dual systems that combine another renewable energy with wind energy can harness wind power more effectively, and they can provide continuous power output.  Wind energy is Clean; Environment Friendly Wind turbines doesn't emit any harmful or green house gases. Like conventional energy sources such as coal, petroleum energy, wind energy does not pollute the air. So Wind power is a Green energy source. Wind Energy is Sustainable Wind i...

Solar power is the largest among renewable energy sources. But, we don't have an efficient and cost effective technology to harness solar radiation. Now a days, experts are more confident than before and say that they can manipulate a cheap and efficient method to harness solar energy. Recently Massachusetts institute researchers had came up with a new idea to use old car batteries to make cheap solar panels. We can find more and more promising news updates about solar power from various research groups. In such a circumstances, you should be aware about the advantages and disadvantages of solar power. Advantages of Solar power You are in the right place! Here we have a giant list of advantages of solar power for you. Solar power Reduces Potential for global warming Use of traditional energy sources such as petroleum, coal liberates excess amount of oxides of carbon which leads to Green house effect. Global warming threatens the survival of human society, as well as the survival of...

Geothermal areas are some places on Earth where high pressure steam is exhausted from the Earth crust without any external heat supply. It is due to the boiling of water in under water reservoirs due to the nearness of hot magma. Energy generated from such hotspot is termed as Geothermal energy. It is independent from climate and seasonal changes. Read more about advantages and disadvantages of geothermal energy Advantages of Geothermal Energy. 1. Significant Cost Saving Geothermal energy generally involves low running costs since it saves 80% costs over fossil fuels and no fuel is used to generate the power. Since, no fuel is require so costs for purchasing, transporting and cleaning up plants is quite low 2. Environmentally Friendly Geothermal energy is generally considered environmentally friendly.There are a few polluting aspects of harnessing geothermal energy, but these are minor compared to the pollution associated with conventional fuel sources (e.g. coal, fossil fuels) 3. Cons...

Early We had discussed  8 most dangerous human activities that harm the environment .   This article is a continuation of that entry. You may have noticed we have missed several other human activities from that list. We are glad to see your suggestions and opinions in the commenting area. Here in this article we are going to discuss about "10 Threats that we are going to face in 21st century." 1. Global Warming Global Warming in Guana by minds-eye, on Flickr As a result of over Deforestation and emission of excess amount of oxides of carbon from power plants and vehicles there has been formed a green house effect around the Earth. Global warming would leads to water scarcity and extinction of several living organisms. 2. Water Scarcity oh dear.. save water! by VinothChandar, on Flickr Causes : Destruction of water resources, Global warming, Deforestation, Decrease in rain water Affects : Extinction, diseases, 3. Energy Scarcity Causes : Great dependence on traditional energy ...

Balance is the most important factor when defining the word "nature".  Each and every components and resources lies under a balanced  condition. Any small change in those components will induce an  imbalance in whole system of nature. Intolerable condition leads to  natural hazards! Here we are going to discuss about 8 most dangerous human activities that harm the precious environment. Mankind is exploiting the nature for his profit. If he is continuing his cruel exploitation of nature mankind as well as all other living organisms on earth will disappear. Human Activities that harm the environment  Deforestation  Extreme level of carbon emission  Over exploitation of minerals and resources  Stone Mining  Sand Mining  Paddy field filling  Hill leveling  Over use of plastics 1. Deforestation Deforestation by crustmania, on Flickr We have lost more than 90 percent of forest area since 1900. Man exploits Earth's...

Image Credit How to make a simple solar cell for kids? Here in this post you can learn two simple methods to make an experimental solar cell, for the purpose of impressing your kids. Or you can use this cell as a photodetector. Solar cell manufacturing is a very expensive process, that's why even a small solar installation costs around $1500-$2000. However, you can make a simple solar cell by following some simple instructions as listed below. Keep in mind that the functioning of the device depends upon the perfection of your construction. A solar cell is made up of a semiconductor. They are used to convert the energy from the world's largest renewable energy source, the Sun! Solar radiations carry enormous amount of energy. It is possible to harness energy from sun light by using solar cells or solar panels. There are similar devices used to harness other forms of energy from the sun. Solar heaters and parabolic concentrators ...