Now that the tops are tabbed, flip all of them over (sunny part down), but, slip out the tabbing strip from the first one so it lays throughout the back of the next. Do the same all of the way down your "string". You will be soldering the strip to the contact points regarding the relative straight back associated with cells. Should your cells are like mine, you will have 6 small whitish contact squares. Ensure that your tab strips line up so they really shall sit within the contact spots then use flux to your spots. Hold your soldering iron to your strip on the spot and when its hot, touch the solder cable to your true point and let the solder flow, don't apply an excessive amount of and don't over heat the contact since you may harm the mobile. An alternate is to use a solder paste on the contact, lay the tab on and contain the iron in the point till it flows, for me, this is a much better solution. Perform some same for several six contact points, will have two cells linked. Repeat this procedure for the solar cells along the string.
It is a pretty idea that is good be sure you have good solder connections, by exposing the cells to light and testing the output voltage. At the minimum, check each string, it really is far too late when you have connected them all up to get there is a "dry solder" someplace and have to locate it right back. All soldered together, there is one more thing to do with the string of cells. The last one, with its "top tabs" free at this stage you will have at one end of the string. But at the beginning of the string, absolutely nothing to connect with. So that you have to solder a length that is short of strip towards the back associated with "top" (first) cell to possess one thing in order to connect to and complete a circuit. Therefore, regarding the "first" cell, solder tabbing strips across the rear contacts with an adequate amount of a free end to permit you one thing to connect to. Now you are going to have connecting tabs at both ends of one's string ready to connect to its string that is neighboring or connector bus. Actually, now it saves some double handling that you have read this far, its a good idea to do solder this "first" set of back tabs before soldering up a string.
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The spot that is dark oil left over through the cutting and forming process at the manufacture. If this oil is kept it will not take the solder on you will burn your fitting and.
Flux the pipe and fixtures: utilizing your flux past brush each final end regarding the pipeline and fittings. This will guarantee a clean and tinned joint.
Time to solder: Whatever size your pipe, that is how solder that is much will have to used to sweat your joints together. So, you will need one inch of solder to sweat your joints together if you are soldering 1" one inch copper pipe.
Utilizing a torch temperature your pipeline and suitable evenly. Begin two inches behind the fitting and slowly heat up your pipeline and fitting with a back and forth sweeping motion. Make sure your flame is close enough to cover the whole diameter associated with pipe.
As soon as your flame turns green apply the solder to your hub associated with the fitting, making sure that the solder moves all the way round the hub. Wait!There is one more "Secret" step to a solder that is perfect, that means the essential difference between an amateurish glob of the mess on your own fixtures or a professional looking solder joint every time.