Solar panels are useful in changing the sun's energy into functional and usable electricity.
Build your own solar panel instructions
The number of solar cells to compose a solar panel is dependent on the voltage you wanted to obtain out of it. Each of the solar cells is approximately generating 0.5 volts DC, regardless of its size. The parameter that changes with size is the current or the amperage. For instance, if you are producing a 0.5 volt at a solar cell with 3 ampere current, if the cell is broken into half, you will still be getting 0.5 volt but only 1.5 amperes current. The solar cell has positive leads at the bottom and on top of it are the negative leads. Wiring it up altogether and you will be creating your own homemade solar panel.
Plywood can be an alternative to tape and cardboard that is commonly used. Homemade solar cells if done properly are of great advantage it is less expensive than purchasing it. Mostly, it will be designed to be durable enough to last in different weather conditions.
The panel featured in the next paragraphs is composed of 90 cells and will generate 16.5 volts and 9 amperes current.
A plywood with the measurement 60”x35” and 3/4” in thickness will be utilized as the base of the panel because the size of each cell is 3” X 6”. Separate it into 3 sections by cutting a 1 1/2 bar and use it also to edge around.
The purpose of dividing it in sections is that it adds more support to the glass and if there are cases of breakage, only light damage will occur. After putting the bars on, start sealing it up using the aluminum epoxy type to furnish the surface keeping it out of moisture. Cut a piece of plywood, foam or cardboard and fit on each section to hold the cells intact.
Between the cells, drill the holes where the soldered wires will meet later. Start soldering while waiting for the sealant to harden up. Patience is needed because it is never easy to solder solar cells. Each solar cell has 2 strips on top and 6 white rectangles for soldering slot on the back.
Connecting the cells together can be of two ways: Utilize the taping that is found in front on most of the cells and solder the end stringing up the back. This will be hard to repair because if one cell breaks, it is hard to disconnect. The alternative second method, which requires little effort on repairing, purchase a ribbon and each strip, must be soldered to the back part of the cell. The latter method is recommended.
Just a tip when soldering, use a flat tip, 30 watt iron and a silver solder. Make the iron in contact with the rectangle found in the back of each six cells and supply a little amount of solder into it.
Make sure that it would be little drop of solder enough to be connected to the cell. Perform this to all of the six cells. Then bond the metal strips of the wire on top of the drops facing the opposite direction as the top wires being the negatively charged. Touch the iron on each one to melt the solder surrounding the ribbon. Again, accomplish this to all of the six cells.
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