Your output is probably AC of very low frequency and low current and a transformer will not work well under those conditions.
Chargers usually involve a DC-DC converter which includes a transformer designed to work at very high frequency, 20-30 kHz, and it would not work with the few Hz frequency you are generating even if you extracted it from the circuit.
what kind of generator, ac or dc. .. use permanent magnet DC motor as generator to make u r project it will light up more LED's( since LED's need dc and trans is not used). if ac ,generating ac in small quantity is not easy. and i think u can't use transformer in charger because u can not supply it with rated frequency and if not at rated frequency it's parameter will change and output will change,and if u use AC then u need to use led driver circuit and it is some what bigger project and takes little time .choice is urs ..
All the best.
Yes, it will step up the voltage, but, even ignoring losses, the available current will be reduced. Fir example, if the generator can produce 12 volts at 10 amps, stepping it up to 120 volts will reduce the available current to 1 amp. Power = voltage x current.
A charger cannot be used in reverse, if that is what you mean.
Ok, so Im going for a small science exhibition, and I am planning to make a generator, powerng LED lights. But since the generator produces very less voltage on spinning, I need a step-up transformer.
On a charger at home, I read that
INPUT: 240 volts
OUTPUT: 5 volts
so, I figured they had used a step-down transformer.
If I just change the input and output ends, using my generator as INPUT will it function as a step-up transformer?
