Solar energy – the energy of this century one of the major human.By 2030, the world’s electricity production will mainly rely on solar energy. Solar energy as a non-polluted environment, but also an inexhaustible supply of new energy will be everywhere. Solar photovoltaic products is through the effect of light under the sun, into electricity process, is a use of high-tech development of new energy, mankind yearns for the 21st century, the pursuit of new sources.
Solar lights and solar power generation systems and other products of the main innovations:
01 energy, which uses natural light, without consumption of energy, and inexhaustible not finish;
02 environmental protection, in line with environmental protection requirements, no pollution, no radiation, ecological protection;

As the Earth’s resources become increasingly scarce, increasingly based on investment costs of energy rising, and a variety of safety and pollution problems can be described as ubiquitous. Solar energy as an “inexhaustible” security, environmental protection and new energy sources more and more attention. Thus, solar lighting products with the popularity of solar water heaters after the students should, however, where we use solar lighting and electricity for lighting effects and practical contrast.
Compare one city to install electric lighting complex: in the city lighting project has a complex operating procedures, the first laying of cables; cable channel will be carried out here, excavation, laying of underground pipe, pipe threading, backfill and other large infrastructure projects.

1 A broad light is high-tech Co., Ltd. Beijing
2 Beijing Solar Energy Technology Co., Ltd. Platt
3 Beijing China New Energy Industry Co., Ltd. Sun
4 Beijing Tsinghua Sunshine Technology Co., Ltd.
5 Beijing Sunshine Technology Development Co., Ltd. Po Sang
6 Beijing Four Seasons Solar Energy Technology Co., Ltd. Song Mu
7 Temple Beijing Solar Energy Industry Co., Ltd.

Microcontroller based control system for solar street light

I. Background, purpose and meaning
As a global energy crisis, the world generally given to renewable energy use and research. Solar energy as an emerging green energy, with its inexhaustible, pollution, etc., are being rapidly
The application. solar lighting do not hand in its management and control, install a one-time investment in electricity costs without future, without setting up transmission lines or trenching cabling. Can be easily installed in Plaza, schools, parks, and not easy to set up transmission lines and many other advantages place more and more attention.

Some light dimmer history

Light dimming is based on adjusting the voltage which gets to the lamp. Light dimming has been possible for many decades by using adjustable power resistors and adjustable transformers. Those methods have been used in movie theatres, stages and other public places. The problem of those light controlling methods have been that they are big, expensive, have poor efficiency and they are hard to control from remote location.
The power electronics have proceeded quickly since 1960. Between 1960-1970 thyristors and triacs came to market. Using those components it was quite easy to make small and inexpensive light dimmers which have good efficiency. Electronics controlling also made possible to make them easily controllable from remote location. This type of electronic light dimmers became available after 1970 and are nowadays used in very many locations like homes, restaurants, conference rooms and in stage lighting.