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Make your own charger for your phone. There are many ways to do this, in this projection I will show you how to do this using the LM2596. The advantages of this charger are charging current of 3A, simplicity in the making, input voltage 7v - 40v. It can power directly from the 12v or 24v battery. In this example I used a 14.4V battery from a cordless drill.

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DIY USB charger for your phone - LM2596

Step 1: Components

Required components.

Step 2: Schematic

Schematic of USB charger.

Step 3: Soldering

At the beginning, set the voltage to 5V on LM2596 using a potentiometer.
Then connect the LM2596 to the USB port as shown in the picture.
After connecting the USB and setting the voltage, the charger is ready to use. wwwGoogle pluseTwitter

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Bio: Software, electronics, do-it-yourself
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