Solar powered power supply. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Alternative energy sources
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A solar power source can be assembled according to the diagram shown in the figure.
The batteries GB1 and GB2 are recharged by the solar battery GL1. Diode VD1 does not allow them to be discharged through the solar panel when its voltage is lower than the nominal voltage as a result of insufficient lighting. By pressing the buttons SB1-SB3, they control the voltage of the batteries by connecting a milliammeter PA1 to them through a ballast resistor R1.
The current consumed during the measurement is deliberately chosen to be quite large (about 100 mA). This allows you to more accurately assess the illumination of the solar battery and the degree of charge of the batteries.
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| Random news from the Archive solar chimney
06.05.2020
Developed by scientists from the Royal Melbourne Institute of Technology, a solar chimney can save up to 50% of electricity, and also help save the lives of homeowners in a fire.
Approximately 19% of the world's energy resources are used for heating, ventilation and cooling of buildings, the authors of the study write. Installing solar chimneys will reduce energy costs for heating by 50%.
A solar chimney is a passive solar heating and cooling system that uses natural ventilation to control the temperature in a building. Modern solar chimneys consist of a glass wall placed against a black painted wall. This design maximizes the absorption of solar energy.
The vents on the top and bottom of the mechanism control the air flow inside and outside the chimney for heating or cooling. When the sun heats up the chimney, it also heats up the air inside it.
A solar chimney allows carbon dioxide to be drawn out during a fire, as well as fresh air being brought into the building.
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