ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications, Jul 1, 2007
Although White LED lighting systems that powered by solar cells have presented for many years, bu... more Although White LED lighting systems that powered by solar cells have presented for many years, but they are not widely used in today application because of their cost and low energy conversion efficiency. The proposed system use the dc power generated by fixed solar cells module to energize White LED light sources that are operated by direct connected White LED with current limitation resistor, resulting in much more power consumption. This paper presents the use of white LED as a general lighting application powered by tracking solar cells module and use pulse to apply the electrical power to the White LED. These systems resulting in high efficiency power conversion, low power consumption, and long light of the White LED.
Electricity, Information and Communication Technologies (ICTs) are very important not only in urb... more Electricity, Information and Communication Technologies (ICTs) are very important not only in urban areas but also in rural areas. To provide ICTs service in rural areas, sources of electricity and communication infrastructures must be implemented. Electricity is a major condition due to the fact that all electronic devices needed it in order to power on, so that it is impossible to operate any forms of ICTs in areas where the main national grid line is unavailable. Almost rural areas of Thailand where the main national grid line is unavailable have very good sunlight intensity. Photovoltaic is the most effective renewable energy technologies in those areas for meeting electricity needed in areas that are not connected to the main national grid line. In this paper, the efficiency utilization of photovoltaic as source of electricity for broadband satellite communication systems as well as social and economic impact and quality of life of people in rural areas of Thailand are presented. The results show that most rural communities would be able to universally access to the basic telecommunications services such as internet access and public telephone via satellite communication systems. However, in some field case study, broadband internet access via satellite communication may be unnecessary for some rural communities and the most exactly rural communities needed are electricity for household usage and battery charger.
ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications, Jul 1, 2007
Although White LED lighting systems that powered by solar cells have presented for many years, bu... more Although White LED lighting systems that powered by solar cells have presented for many years, but they are not widely used in today application because of their cost and low energy conversion efficiency. The proposed system use the dc power generated by fixed solar cells module to energize White LED light sources that are operated by direct connected White LED with current limitation resistor, resulting in much more power consumption. This paper presents the use of white LED as a general lighting application powered by tracking solar cells module and use pulse to apply the electrical power to the White LED. These systems resulting in high efficiency power conversion, low power consumption, and long light of the White LED.
Electricity, Information and Communication Technologies (ICTs) are very important not only in urb... more Electricity, Information and Communication Technologies (ICTs) are very important not only in urban areas but also in rural areas. To provide ICTs service in rural areas, sources of electricity and communication infrastructures must be implemented. Electricity is a major condition due to the fact that all electronic devices needed it in order to power on, so that it is impossible to operate any forms of ICTs in areas where the main national grid line is unavailable. Almost rural areas of Thailand where the main national grid line is unavailable have very good sunlight intensity. Photovoltaic is the most effective renewable energy technologies in those areas for meeting electricity needed in areas that are not connected to the main national grid line. In this paper, the efficiency utilization of photovoltaic as source of electricity for broadband satellite communication systems as well as social and economic impact and quality of life of people in rural areas of Thailand are presented. The results show that most rural communities would be able to universally access to the basic telecommunications services such as internet access and public telephone via satellite communication systems. However, in some field case study, broadband internet access via satellite communication may be unnecessary for some rural communities and the most exactly rural communities needed are electricity for household usage and battery charger.
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