Among the everyday items for portable electronic equipment, we have gadget batteries. Having a battery charger is an important aid, especially when we often work with devices that use this type of power supply. Below, we will see how to make a battery charger for USB devices.
- A small tin for storing the battery charger.
- A clip for 9V batteries.
- A 5V voltage regulator.
- One female USB connector.
- Insulated copper wire.
Creating our battery charger
The first thing we will do, is to manipulate the can to achieve a customised housing for our charger, we will make a hole in the side of the can to fix the USB connector there.
Next, we need to create the circuit inside the can, so that we can protect it and give it a very attractive look. The first step is to place a 9V battery inside the box, this battery can be fixed with silicone or tape. Then, it is time to make connections to create the circuit, a wire will go from the positive pole of the battery to the input connector of the voltage regulator (Vin). From the output connector of the voltage regulator (Vout) we will make a connection to the female USB.
Next, we join the free connector on the voltage regulator with the negative pole of the battery and from this union, we take a connection to the free pole of the female USB, in this way, we will have our circuit ready.
Now, all we have to do is connect our gadgets to the charger and we can recover the lost power, it's a fairly simple circuit that we can renew every time the 9V battery is discharged.
It should be noted that as the battery is 9V, it should provide more than enough power to the USB devices, as these types of elements only require a power supply of around 5 volts, so we can have power for our gadgets when we are not near the PC to charge them.