Project is a Wind powered mobile charger.
Here wind energy is converted to dc power using dc fan(processor fan)
12 V,0.25A rating.
I use 3 fans in series as i dont get enough wind...which together generates close to 4V and current greater than 200 mA.
I use a voltage regulator ckt using 7805 IC and capacitors at the fans output terminal.
The charging req of typical battery is 3.7 V;200mA.
But when i connect my phone to this...earlier it used to charge but now sometimes the phone detects it and never charges.
Here wind energy is converted to dc power using dc fan(processor fan)
12 V,0.25A rating.
I use 3 fans in series as i dont get enough wind...which together generates close to 4V and current greater than 200 mA.
I use a voltage regulator ckt using 7805 IC and capacitors at the fans output terminal.
The charging req of typical battery is 3.7 V;200mA.
But when i connect my phone to this...earlier it used to charge but now sometimes the phone detects it and never charges.