A great example of creating the simplest device for charging a phone, player or any other gadget with a usb - connector for a power cable from the finger batteries.
Materials for creating the device:
- wires
- Capacitor in the amount of 2 pieces
- USB connector
- battery holder box
- batteries
Description of manufacture.
After all the necessary materials were selected, the author proceeded to assemble the device. Just following the diagram, with the help of a soldering iron and wires, all parts of the device were connected together.
For clarity, the scheme by which the charger was assembled is shown below.
The author did not note any features in the manufacture of the device, the assembly is intuitive. The author spent about 10 minutes on the entire assembly.
Putting the batteries in the holders, you can start charging the phone from the usb connector. It takes about 30 minutes to charge this device, after which it is necessary to stop charging, but this is usually enough, since the phone’s battery charges very quickly.
As a result, the author received a universal charger for usb gadgets through the use of finger batteries. Now, if it is not possible to charge the phone from the network, you can always buy a pair of batteries in any store and increase the battery charge on the phone thanks to this portable device.