Thursday, 9 June 2016

Mobile phone charger from dry cell AA/AAA 0V to 2.4V

Charge mobile phone from dry cell AA or AAA 0V to 4.5V from a simple easy to make using less component mobile phone charger.


We all know that for the cell phone to charge, charger output must be above 4V and which can deliver a maximum current of 500mA if used from dry cell or AA type battery.

Here our charger circuit will step up the voltage from 1.5V to 5V DC to reach the cell phone charging requirement. The circuit uses only an AA or AAA 1.5v battery (1V to 2.4V). The charger is composed of simple oscillator, a rectifier, and voltage regulator.


CIRCUIT DIAGRAM:




The feedback winding F  here is composed 5 turns of #30 AWG magnetic wire and main winding P is composed of 6 turns of #24 AWG wire.
The 5.1V zener diode and 2200uF capacitor here regulates the output voltage to ensure proper charging of cell phones.


Here the windings are not very critical, you can experiment using different number of turns here. If ever the charger doesn’t have any output, try to reverse the winding connection.

This cell phone charger can charge the cellphone battery only for short period of time because the 1.5 volt battery power capacity wattage is much lower than the phone’s battery.

So this can be used when there is emergency when we travelling to such places where there is scarcity of electricity.


For any further query please ask them in comment section i will be happy to answer them.
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