What circuit for an Hand Cranked Led Torch?
I want to build a Led torch that is charged using a DC motor and a couple of High Capacity Capacitors. The problem is that i'm not very good with electronics (i've made a chemistry school) but i really like it.
So, what kind of circuit i have to use for something like this?
I use a Dc motor that have about 4.5V output, the led are standard white ones, 3.5V 30mA.
Some friends told me to use an LM1086 voltage regulator that have the output with the capacitors, other say to use only a rectifier diode, other say that i have to use a Led Driver (but i think it is useful for big one, not mine...)
My goal is to make the circuit very relyable, but not impossible to make and that make the Led well balanced, good brightness/consume ratio...