Hello,
in my school we are setting up an enterprize, which will produce kinetic phone chargers and sell them.
The idea is that in a wooden box we'd fix a bearing with a magnet on it and put wound up magnet wire around it, the two terminals then would go to a 3.7V battery, then through a LED, a 5v voltage regulator, and into a usb cable which could charge phones.
Could you please explain which wire of the solenoid would be positive and which negative, how should it all be set up, im probably missing a lot of resistors or capacitors.
Id be greatful if you kept it simple, thank you.
in my school we are setting up an enterprize, which will produce kinetic phone chargers and sell them.
The idea is that in a wooden box we'd fix a bearing with a magnet on it and put wound up magnet wire around it, the two terminals then would go to a 3.7V battery, then through a LED, a 5v voltage regulator, and into a usb cable which could charge phones.
Could you please explain which wire of the solenoid would be positive and which negative, how should it all be set up, im probably missing a lot of resistors or capacitors.
Id be greatful if you kept it simple, thank you.