Garden Lantern on a Solar Battery. Operation Principle The stand-alone street lights that work off of solar batteries are now becoming increasingly popular for garden applications. Small decorative lanterns can be installed virtually anywhere. Besides they not only serve as a a source of light, but also offer an elegant decoration of the countryside landscape. There exist several ways of recovering free energy from the generous nature, and one of them is the solar activity. Now let’s get to the essence of this. A garden lantern is an environmentally friendly and safe product. But how does it really work. Light is generated by the solar energy through the solar battery and a built-in accumulator battery. The solar cell converts the solar energy into electricity in order to charge the built-in accumulator battery, which is used to power the built-in LED or groups of LEDs at night time. Now, let’s look at how a garden lantern is built. The solar panel is located in the upper part of the structure, i.e. over the cap. Normally such devices, especially of Chinese origin, are fitted with inexpensive thin-film components that are resistant to water. They are glued onto the transparent plastic from the back side. And it is that plastic that is in fact vulnerable to water, dust and grease, which eventually leads to weaker transmission of the solar radiation. And now look at all the details of the structure. The inside of the lantern holds a boost voltage inverter with a circuit assembled using the standard Chinese technology. We need this inverter for operation of normally one diode that is most of the times white, but could be a bright one too. Power is supplied with the help of a battery often with small capacitance. It has its own standard slot, which makes it easy to replace. The assembly is done using a wire with an ultrathin inside dimension. At the time of long and tiring operation the wire can sometimes break under its own weight at the base of the circuit board. The entire structure is enclosed in a sealed case, so that the rain wouldn’t effect the device’s operation. But water can always find a little hole – after all the structure can be easily disassembled, which means that it is not so leakproof to begin with. The consequences are quite obvious: Oxide on components, conductor breaks, cloudiness of the plastic panel. In conclusion, we can say that: A garden lantern on a solar …
Post time: Jan-08-2017