The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Installing LED based lighting system is a good choice to reduce the energy consumption in houses and small offices. They are extremely efficient, using up to 80% lesser energy than an equivalent incandescent lamp, radiate much less heat, have longer lives and require lesser maintenance. This paper evaluates a new installed DC direct-coupled photovoltaic system that enables the use of DC power directly...