Mobile Phone Charging Circuit Diagram. 2 dc cell phone charger using a single transistor. The design is quite straight forward built on a paper phenolic pcb could be easily repaired.
Regulated output is given by the transistor t1 output voltage is controlled by zener diode zd and the polarity of the output supply is protected by d1. No prior registration needed. This simple usb cellphone charger circuit can give regulated 4 7 volts for charging the mobile phone.
This dc supply can be used to charge mobiles as well as the power source for digital circuits breadboard circuits ics microcontrollers etc.
The circuit comprises several diodes logic gates resisters etc. For the charging of your mobile phone this circuit provides you a regulated voltage of 4 7 volts. The mobile phone charger circuit based project described here provides 4 7 v of the regulated voltage and a sufficient amount of current for the slow charging of the mobile phones. This simple usb cellphone charger circuit can give regulated 4 7 volts for charging the mobile phone.
