I am an electronics novice (1 month or so), working on a small solar cell project. I plan on building a AA/AAA solar charger using a resistor and LM317 chip, and will switch between the two different battery holders using a SPDT switch.
I would like the charger to light an LED when the batteries are sufficiently charged. How might I do this? I'm thinking a zener diode might be used. Thanks for any help you might give!
I would like the charger to light an LED when the batteries are sufficiently charged. How might I do this? I'm thinking a zener diode might be used. Thanks for any help you might give!