In this post I have explained a simple automatic PIR controlled solar garden light circuit which will switch ON the LEDs only under two conditions: when it is completely dark and when a human being is detected in the vicinity. The above feature of the circuit ensures that the LEDs are turned ON only when […]
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Solar Battery Charger using LM339 Comparator
This small LM339 based solar battery charger setup is designed to optimize the charging of your battery using any solar panel while protecting it from accidental overloads. Considering the extended battery life it allows you to achieve, it is an investment that quickly pays for itself. Circuit Description Our setup is nothing more than a […]
High Efficiency Solar Charger Circuits using Switching Regulators
Solar power or electricity from sun light is so abundant that we can afford to waste it or dissipate it in the form heat. This means that we can use large, high power solar panels to charge batteries with lower power without bothering about how much solar energy is being wasted and how much the […]
How to Connect Solar Panels in Series and Parallel
In this post we will study how to connect solar panels in series and parallel and also learn how to calculate solar panels in series and parallel. Before I have explained the connection details, it would be important for us to learn some of the important parameters and specifications related to solar panels. Solar Panel […]
7 Automatic Street Light Circuits [Using Relays and Solar Panel]
In this article I will elucidate 7 useful yet simple automatic street light circuits using 220 V relays and solar panel. All the presented circuits can be used for automatically switching a lamp ON during night time and OFF during day time. What is an Automatic Street Light System An automatic street light system is […]
Solar Stud Light Circuit
In this post I am going to explain solar road stud light, what is it? How do they work? And how can we construct our own. In this post we will see the following: What are road stud lights? What are active and passive solar road stud lights? Circuit design and diagram. Flashing stud lights […]