what does w and c mean on solar lights

i-type semiconductor Semiconductor material that is left intrinsic, or undoped so that the concentration of charge carriers is characteristic of the material itself rather than of added impurities. distributed systems Systems that are installed at or near the location where the electricity is used, as opposed to central systems that supply electricity to grids. Can be part of a maximum power point tracker. F. Solar lights can be turned off when not in use because they have an on/off switch. Cloudy and Rainy Portland, Oregon Embraces Solar. two-axis tracking A photovoltaic array tracking system capable of rotating independently about two axes (e.g., vertical and horizontal). What is solar lighting: definition, how it works and examples | Sol by They take the energy from the sun and use it to power the built-in LED light, and viola! For instance, an SPF of 50 protects against 98% of UV radiation. battery cycle life The number of cycles, to a specified depth of discharge, that a cell or battery can undergo before failing to meet its specified capacity or efficiency performance criteria. base load The average amount of electric power that a utility must supply in any period. The labeling on the leads will also indicate the conductor size and what the wire is made of, either aluminum or copper. This value is important when selecting an inverter. system operating voltage The photovoltaic array output voltage under load. photovoltaic (PV) conversion efficiency The ratio of the electric power produced by a photovoltaic device to the power of the sunlight incident on the device. In the steady mode, the light will remain lit at a consistent level for as long as it has access to sunlight. Uses an aperture of 5.7 to transcribe the solar disc. maximum power tracking Operating a photovoltaic array at the peak power point of the arrays I-V curve where maximum power is obtained. It consists of one or more positive electrodes or plates, an electrolyte that permits ionic conduction, one or more negative electrodes or plates, separators between plates of opposite polarity, and a container for all the above. P-I-N A semiconductor photovoltaic (PV) device structure that layers an intrinsic semiconductor between a p-type semiconductor and an n-type semiconductor; this structure is most often used with amorphous silicon PV devices.

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