12V to 5V Mobile usb charger using any power transistor

Hello friends, today in this video i have shown how to make a simple mobile phone charger with using any power transistor and a 5.1V zener. Then you can supply this circuit from any 9V -12V battery or even any 12V car battery. If you are planning to input above 12v then put a bigger heatsink for the transistor.

• #فناوری_و_رایانه
• #how_to
• #diy
• #homemade
• #powerbank
• #mobile_charger