The mobile phone charger has become one of the most necessary technological trifles in our life. After all, without her, our mobile phone will be just a lifeless box. But when it broke down, the phone sat down, and you are waiting for an important call, you will have to experiment and try to charge yourself.
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The first design of the charger involves using the computer's USB connector or a network adapter connected to the outlet. So, first, you will need an old flash drive from which you need to get the plug, just be careful not to break the board on it. Next, take the segment of the two-housing cable, clean the contacts on one side and begin to heat the soldering iron.
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Now let's study the scheme that they dropped along with the plug. On it you will see four contacts, the central is responsible for transmitting data from the computer to the flash drive chips, they do not interest us. But the side is responsible for food, it should be carefully soldered that cable that we have prepared. Only to improve the soldering, do not use the acid, as the contacts are rather gentle and after a while they can be spoiled.
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On the second side we solder the plug from the old charging, and one of the wiring is to isolate: if you suddenly touch the collected form, a short circuit, because of which the phone can burn, will not happen. After ringing the design with a tester, one probe attach to the charging plug, and the second is to take turns to each contact to USB. Now wrap both ends with a tape - and you can charge the phone.
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And if you are a lover of tourist campaigns or just spend a lot of time on the road, you can make a portable charging. Of course, it will give in performance by purchased analogue, but it will cost you many times cheaper. For the manufacture of such a device, you will need four AA type batteries, a tape, a resistor into two ohms, a plug with a cable from an old telephone charging.
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Next, connect together all the batteries together, that is, the plus must touch the minus, after wrap the tape so that the improvised "battery" kept, and for convenience, you can use a plastic box. Now you need to test this design for the presence of current, for this take two wiring, one attach to the plus, and the second to minus and try in the language. You must feel easy tingling as if you are lying to the contacts of the crown batteries. If everything happened, take a resistor into two Ohm and solder it to the plus of our power source.
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Then you need to deal with the cable from the original charging. Inside, you can see reaching two, and should be soldered with a plus to the free end of the resistor, and the second is to minus the battery. Everything, you can already charge the phone, but first watch the recharging process for a few minutes, if this design is quickly heated, then you confused the polarity in the cable wiring, and they need to be swapped.
Of course, these options are suitable only for simple phones like Nokia, since for iPhone, new Samsung models and the like charging in the design is much more complicated.
Here I have Samsung Galaxy S4 Mini GT-I9190, for him I tried to assemble the battery from nickel-cadmium elements. She took 6 blocks of 4 batteries 1.2V, connected, soldered the plug, charged the charger to 5.3V. The phone charged quickly and good. After that, I tried to charge the usual charger for your phone as a result on a portable battery I get 4.7V, but the phone does not take the phone, and everything is directly carried away from the charger, everything works fine.
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Here I have Samsung Galaxy S4 Mini GT-I9190, for him I tried to assemble the battery from nickel-cadmium elements. She took 6 blocks of 4 batteries 1.2V, connected, soldered the plug, charged the charger to 5.3V. The phone charged quickly and good. After that, I tried to charge the usual charger for your phone as a result on a portable battery I get 4.7V, but the phone does not take the phone, and everything is directly carried away from the charger, everything works fine.