USB Mobile Charger Circuit | Mobile Phone Travel Charger Sep 02, 2015For the charging of your mobile phone, this circuit provides you a regulated voltage of 4.7 volts. 5 volts of DC voltage and 100mA of current is being provided by the USB outlet which is well enough for the mobile phone charging slowly. We can use this circuit to charge the mobile USB Powered Mobile Phone Battery Charger – Circuit Wiring This simple circuit can give regulated 4.7 volts for charging a mobile phone. USB outlet can give 5 volts DC at 100mA current which is sufficient for the slow charging of mobile phones. Most of the Mobile Phone batteries are rated 3.6 volts at 1000 to 1300 mAh. These battery packs have 3 NiMh or Lithium cells having 1.2 volt rating.
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