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For the cell phone to charge, charger output must be above 4V and can deliver a maximum current of 500mA. This 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. The feedback winding F 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 regulates the output voltage to ensure proper charging.
The windings are not critical, you can experiment using different number of turns. If ever the charger doesn’t have any output, try to reverse the winding connection.
Note:This charger is functional but provides not warranty on its accuracy. Try building at your own risk.
I think this is the best information you have shared here. It is very easy to learn and understand. I think this very useful and helpful information for the people.
ReplyDeletemobile phone signal booster
I tested my self,works fine with 2.4v imput from litium battery and some ajust of toroide chore
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